PD 130 manual 32mpg :(

[S66MJETDI]

I'm having issues with the MPG on my A4 Awx engine code with FEC 5 speed manual box.

Its been on VCDS and my amateur readings of the system seemed to show all ok with the exception of the MAF which was a little out of spec.

Coolant temp was showing 90 on the dash and 87 on VCDS so all ok there.

Slight roughness at idle.

Since the read its had a new bosch MAF, new clutch and DMF.

Yet the car is still only managing 32mpg.

My normal driving is conservative, with the usual trip being 11 miles of A road which flows well to work and back with the odd 3 mile trip back and forward if its my turn to do the school run.

I'm not expecting 60 mpg but I feel 32 is somewhat low - oh its non Quattro bu the way.

Have ordered a timing belt locking set and plan on stripping down and checking the static timing as it had a belt back not long before I bought it in August, and the invoice looks less than professional so I'm wondering if it's had a tippex and pray job........

Any suggestions or experience in sorting this out appreciated.

Mark

[zollaf]

How are you calculating the 32mpg ?

[S66MJETDI]

Manual calculation - fuel in over miles archived - its a sport spec car so doesn't have a computer of note anyway.

[zollaf]

cool, so yes, 32 is a bit low, may as well be driving an s4. does it feel as quick as it should ? possible causes, egr, blocked cat, boost fault.

[S66MJETDI]

Egr is clear but have now disabled it in any case. The car pulls fairly well but does not feel as positive low down as my 110 afn engined A4. As for the blocked cat idea I wouldn't have a clue how to check that other than to say it just passed a MoT with no issues on the emissions.

Mark

[zollaf]

the cat, if blocked will make no difference to emissions. i ahve just removed one from a customers 80 and that was about 75 % blocked with soot. car pulls a whole lot better now. i would unbolt and remove the cat and see whats inside it. its the first thing in the exhaust after the turbo that looks like a small silencer. they are not actually a cat as such so not required for emissions purposes. either replace it or fit a decat pipe. this is a diesel not a petrol. you cannot remove a petrol cat.

[S66MJETDI]

How do you diagnose a blocked cat without removal...... ? It seems a bit extreme to have to remove it and peer inside - not massively scientific either as from memory every cat I've ever looked in you couldn't see through from one end to the other.

[zollaf]

you can't really. its the ends that you can see that will be blocked.
i suppose the other way would be to test to see if you have high fuel consumption and lack of performance.

[S66MJETDI]

Lol...@ the low performance high consumption comment. I hear what you are saying and would accept that as a suitable diagnosis if there were no other possible causes. However as there are that's just going to be a trial and error thing.

[zollaf]

yes, i agree. mind you, first thing i would do if it were my car is to get a bypass pipe as even a new unblocked cat is a restriction the turbo works better without. as you said though, its a matter of trial and elimination. no codes, lack of power usually points to amm (maf). you have a new one though (was it from a dealer, plenty of dodgy bosch copies from china on ebay ) so presumably can't be that, so you have to extend the search.

[S66MJETDI]

My MAF was a genuine recon unit from ECP. Didn't bother with ebay for that very reason.

[zollaf]

hmm, i think people have even had bad experiences of them. crasher always recommends one from a dealer to be certain you are getting one that works. hes a sponsor, c&r enterprises, top vag specialist and worth listening to.

[S66MJETDI]

Sounds like experience based advice...... you would need to call into serious question the integrity of a company like Bosch if it were to supply a different quality of item to different customers - should a genuine Bosch Maf not be identical no mater where it's come from - or are we saying ECP has been known to have knock off Chinese copies in it's supply chain somehow?

[S66MJETDI]

Incidentally I'll run the figures up on VCDS when I get the opportunity.

[ajrayner]

You can check your timing using VCDS in engine measuring blocks. I forget the block number but look for one called Synchro angle. If it's between -0.5 and +0.5 then your timing is good and saves you dismantling your cam belt.

Incidentally, I have an AVF avant 130 6 speed FWD and in my 6 months of owning it have averaged 38 mpg. I believe the engine is capable of more but I'm am running out of things to check!

[S66MJETDI]

Thanks ajrayner, I am aware if this check on VCDS - however could someone please correct me if I have this wrong? As I understand it the timing needs initially to be set with the locking pins to ensure the correct static timing is achieved. Then the three 13 mm bolts released prior to releasing the tensioner into its running position, this allowing the tension to be equalised through the whole belt, then the 3 13 mm bolts retightened prior to removing the pins. Thus removing the possibility that as you pull the pins the natural tension / elasticity of the belt under tension on one side of the sprocket doesn't pull the timing out of alignment fractionally.

The synchro angle adjustment as I understand it only comes into play as an option to re-adjust a initially correctly timed engine if the belt stretches slightly midway through the service life of the belt putting the timing slightly out again.

My concern is that the person who did the initial set up didn't use the tools and was a old school tipex and bodge merchant.

[ajrayner]

You are correct but timing can only be adjusted mechanically at the cam sprocket. Vcds is merely an indication as to whether it's good or not. Check out the link for a good explanation.

http://www.myturbodiesel.com/1000q/multi/PD-adjust-Idle-TDI.htm

[S66MJETDI]

Thanks :)

[S66MJETDI]

So I'm still chasing this mpg issue...... stripped the front of the car down today and fitted the crank locking plate...... But the cam sprocket pin wouldn't go in.... Released the 3 13m bolts gave the centre bolt a little twist (maybe one degree) and the cam pin has now dropped in. Haven't rebuilt it yet as while I was in there I found the aux belt pulley was knackered along with the snub mount which I shall be collecting in the morning. So would a degree or two out on the cam timing cause such a drastic reduction in mpg?

[Google44]

Hi.

DId you sort this out? I've also have mpg issue. The car drives fine but mpg is as low as yours. Not my driving as recently drove BMW 2.0 same age and got 56 mpg on the same journey.

So far I've tried:

1. New thermostat and temp sender - now sits at 90 C
2. two MAF sensors - no help
3. turbo vains cleaned
4. full service with all filters
5. EGR cleaned
6. different aditives

Non helped.

I've got new set of Beru glow plugs on order. That is the last to try to help mpg on startup.

I am running out of ideas what to try next. If it stays like I will get BMW. It is realy a shame because it is a quick car (not driving it like this to get mpg). I've had B5 AVANT before with AFN engine and that was by far the best mpg car I've ever had.


Audi A4 TDI Avant Sport 2003 with AWX engine

[S66MJETDI]

Ho Google44,

Not sorted yet - although I stripped the car down at the front and put the locking kit on the crank and the cam pin wouldn't go in..... I slackened the three 13mm cam sprocket bolts put a spanner on the centre bolt and moved the cam a couple of degrees and the pin slipped in. So I think my timing was maybe a tooth out - there was tippex evidence of a non-pro cam belt change.

The car has now improved low end torque but I have been on leave so haven't done sufficient miles to tell if the MPG has improved..... I have however brimmed the tank so will update in the next couple of weeks...... I only drive around 300m a month.

[S66MJETDI]

Next on my list will be to remove the Cat as Zollaf suggests..... And see what is inside, not sure if you can knock the core out of these in lieu of be able to afford a decat pipe..... This car owes me quite a bit in the last couple of months!

[Google44]

I would expect it to be slugish if CAT is blocked. Mine pulls OK. Just mpg very low. Not sure what else could affect it

[S66MJETDI]

Well yes perhaps but I guess that depends on how blocked it is? I'm running out of options too..... need to get the car back on VCDS and check the synchro angle on the cam shaft.... and do so live capture while on a run..... Just feel a bit awkward pestering people so may have to wait till I can get the kit myself.

[Google44]

How do you check that? Is it on one of the block in VCDS. Also, do you know what values should be in there

[S66MJETDI]

See here How to adjust rough idle and camshaft timing on VW and Audi TDI pumpe duse engine (http://www.myturbodiesel.com/1000q/multi/PD-adjust-Idle-TDI.htm)

[ajrayner]

Google44

Have a look at "Injection Deviation Quantity" in engine measuring blocks (I forget the number). Even though the stated limits are +/- 2.5, from what I've read, +/- 1 is a sign of an injector on it's way out. It could be that one is over-fuelling. A tell-tale symptom of this is blue smoke from the exhaust, particularly at startup.

Read somewhere that de-catting a 1.9 can put too much strain on the turbo shaft with the increased back pressure, leading to turbo failure (only repeating others opinions here though)

[Google44]

Here is some live data recorded. At some point I even went over 3000 revs.



Tuesday
9
April
2013
09:55:50













038 906 019 JQ

1.9l R4 EDC 0000SG 1570


































Group A:
'001



Group B:
'004



Group C:
'008







Engine speed
Injected quantity
Spec. Inj. duration
Coolant temp

Engine speed
Spec start of inj.
Spec inj. duration
Synchro. angle

Engine speed
IQ driver's req
IQ via rpm(Torq)
IQ via MAF



TIME
820-900
3.0-11.0
5-7 °Ck.
80-110°C
TIME
820-900
1BTDC-2ATDC
5-7°Ck.
-3..+3°Ck.
TIME
2850-3150
50-55
44-47
47-52


Marker
STAMP
/min
mg/str
CF
°C
STAMP
/min
°BTDC
CF
CF
STAMP
/min
mg/str
mg/str
mg/str



0.4
1743
34.6
13.3
90.9
0.8
1764
10.9
13.8
2.8
0
1743
28.8
50.5
42.8



1.61
1806
36.5
13.3
90.9
2.03
1827
11.8
18.4
2.8
1.2
1785
28.8
51.1
55.7



2.84
1890
51.6
18.9
90.9
3.24
1932
11.8
18.9
3.3
2.44
1869
55.5
51.6
57.6



4.04
1995
51.9
18.9
90.9
4.44
2037
12.1
19.4
3.3
3.64
1953
57.6
51.9
57.9



5.27
2100
51.9
19.4
90.9
5.67
2121
12.7
19.4
3.3
4.86
2058
56.5
51.9
57.6



6.48
2205
51.9
19.9
90.9
6.88
2226
13.3
19.4
3.3
6.08
2163
61.8
51.9
57.6



7.68
2289
51.9
19.9
90.9
8.08
2310
13.6
19.9
3.3
7.28
2268
68.4
51.9
57.6



8.88
2394
51.9
19.9
90.9
9.29
2352
4.3
3.1
3.3
8.48
2352
69.7
51.9
57.4



10.11
2373
0
-2
90.9
10.52
2352
4.3
-2
2.2
9.69
2373
0
51.9
31.6



11.32
2331
0
-2.6
90.9
11.72
2310
4
-2.6
2.2
10.92
2331
0
51.9
27.5



12.52
2289
0
-2.6
90.9
12.92
2268
3.7
-2
2.2
12.12
2310
0
51.9
27.2



13.73
2247
0
-2
90.9
14.15
2247
3.7
-2
2.2
13.32
2268
0
51.9
27.7



14.96
2205
0
-1.5
90.9
15.38
2184
3.4
-1
2.2
14.56
2226
0
51.9
29.1



16.16
2163
0
-1
90.9
16.56
2142
3.4
-0.5
2.2
15.76
2184
0
51.9
28.5



17.36
2100
0
0
90.9
17.74
2079
3.1
0
2.8
16.96
2121
0
51.9
28



18.54
2037
0
0
90.9
18.94
2016
2.8
0.5
2.2
18.14
2058
0
51.9
27.5



19.72
1953
0
0.5
90.9
20.12
1932
2.8
1
2.2
19.34
1974
0
51.9
27.2



20.92
1869
0
1
90.9
21.32
1848
2.5
1.5
2.2
20.52
1890
0
51.9
25.8



22.12
1806
0
1.5
90.9
22.5
1764
2.5
1.5
2.8
21.72
1827
0
51.3
25.8



23.3
1722
0
2
90.9
23.7
1680
2.2
2
2.2
22.9
1743
0
50.8
25.3



24.48
1617
0
2.6
90.9
24.88
1575
1.9
2.6
2.2
24.1
1638
0
49.4
25.5



25.68
1344
0
3.1
90.9
26.08
819
0
7.7
2.8
25.28
1533
0
48
25.5



26.86
903
4.9
6.6
90.9
27.26
882
0
6.6
2.8
26.46
903
0
30.5
21.1



28.06
882
4.7
6.6
90.9
28.46
882
0
6.6
2.2
27.66
882
0
30.5
21.1



29.24
882
4.7
6.6
90.9
29.64
882
0
6.6
2.8
28.86
882
0
30.5
21.1



30.44
882
4.4
6.6
90
30.84
882
0
6.6
3.3
30.04
882
0
30.5
21.1



31.64
882
4.7
6.6
90
32.04
882
0
6.6
3.3
31.22
882
0
30.5
21.1



32.87
882
4.7
6.6
90
33.27
882
0
6.6
2.8
32.45
882
0
30.5
21.1



34.08
882
4.7
7.1
90
34.48
882
0
6.6
2.8
33.68
882
0
30.5
21.1



35.28
882
4.7
6.6
90
35.68
882
0
7.1
2.8
34.88
882
0
30.5
21.1



36.48
882
4.7
6.6
90
36.89
882
0
6.6
2.8
36.08
882
0
30.5
21.1



37.69
882
4.4
6.6
90
38.1
882
0
6.6
2.8
37.27
882
0
30.5
21.1



38.92
882
4.7
6.6
90
39.32
882
0
6.6
2.8
38.52
882
0
30.5
21.1



40.12
882
4.7
6.6
90
40.52
1302
1.6
7.7
2.8
39.72
882
0
30.5
21.1



41.3
1281
15.6
8.2
90
41.7
1113
6.2
8.7
2.8
40.92
1428
14.5
45.6
26.1



42.51
1974
32.1
12.8
90
42.93
1953
2.8
3.1
3.3
42.1
1512
36.2
47.8
35.1



43.74
1323
12.4
7.1
90
44.14
1386
2.2
8.2
2.8
43.33
1470
1.9
47.2
28.5



44.94
1512
10.7
7.1
90
45.34
1554
1.9
6.6
2.8
44.54
1449
12.1
46.1
20.3



46.14
1575
4.7
5.6
90
46.54
1596
1.9
5.6
2.8
45.74
1575
9.3
48.6
18.1



47.32
1722
35.1
12.2
90
47.72
1911
11.8
17.3
3.9
46.94
1617
18.4
49.1
17.8



48.52
2541
51.9
20.4
90
48.92
2856
17.4
21.4
3.3
48.12
2205
66.4
51.9
57.6



49.7
3444
49.1
23.5
90
50.08
3696
22.9
24.5
3.9
49.3
3171
62.9
50.2
55.5



50.9
2373
38.4
8.7
90
51.31
2415
14.3
19.4
3.9
50.5
3234
0
50
38.2



52.13
2688
51.6
20.4
90
52.54
2751
16.4
21.4
3.3
51.73
2541
63.1
51.9
57.1



53.34
2961
50.8
22.4
90
53.74
3087
19.2
22.9
3.3
52.94
2877
68.4
51.1
56.3



54.54
3297
49.7
23.5
90
54.94
3381
21.4
23.5
2.8
54.14
3192
67
50.2
55.5



55.77
3444
1.1
2.6
89.1
56.18
2856
8.1
1
2.2
55.35
3465
66.2
49.1
54.9



56.98
2394
51.9
19.9
89.1
57.38
2436
14.3
19.9
3.3
56.58
2352
64.2
51.9
57.4



58.18
2457
5.2
5.1
89.1
58.58
2457
5.6
5.6
3.3
57.78
2478
54.9
51.9
57.4



59.36
2478
27.7
11.7
89.1
59.76
2478
5.9
7.7
2.8
58.98
2478
27.5
51.9
46.4



60.56
1659
0
2
89.1
60.96
1680
2.2
2
2.2
60.16
2184
0
51.9
29.9



61.76
1785
0
1.5
89.1
62.14
1764
2.2
1.5
2.8
61.36
1806
0
51.1
25.5



62.94
1722
0
2
89.1
63.34
1701
2.2
2
2.2
62.54
1743
0
50.8
25



64.12
1659
10.4
6.6
89.1
64.52
1659
2.5
7.1
2.8
63.74
1680
5.8
50
25.3



65.32
1638
17.6
8.7
89.1
65.72
1638
3.7
8.7
2.8
64.92
1659
17.3
49.7
32.1



66.5
1638
37.3
13.8
89.1
66.9
1638
10.2
12.8
2.8
66.1
1617
17.6
49.4
23.9



67.7
1659
32.1
12.2
89.1
68.1
1659
11.5
13.8
2.8
67.3
1659
29.4
49.7
46.1



68.88
1680
34.3
13.3
89.1
69.28
1701
10.2
12.8
2.8
68.5
1659
34.9
50
49.1



70.08
1701
31.6
12.8
90
70.48
1722
9
12.2
2.8
69.68
1701
31.8
50.2
44.5



71.26
1722
29.4
11.7
90
71.66
1722
8.4
11.7
2.8
70.86
1722
29.4
50.5
43.1



72.46
1743
25.5
10.7
90
72.84
1743
7.4
10.7
2.8
72.06
1743
28.5
50.5
34.3



73.64
1743
26.6
10.7
90
74.04
1743
7.8
10.7
2.8
73.24
1743
26.4
50.8
27.5



74.83
1764
32.4
12.2
90
75.25
1764
10.2
13.3
3.3
74.44
1743
26.1
50.8
30.7



76.06
1785
32.9
12.8
90
76.48
1785
9.3
12.2
2.8
75.65
1764
34.3
51.1
53.8



77.28
1806
29.6
12.2
90
77.68
1806
10.5
13.3
2.8
76.88
1785
30.5
51.1
40.1



78.48
1806
26.9
11.2
90
78.88
1827
11.8
16.8
3.3
78.08
1806
26.9
51.3
45.8



79.66
1869
51.6
18.9
90
80.06
1890
11.8
18.9
2.8
79.27
1848
68.9
51.3
57.6



80.86
1932
51.9
18.9
90.9
81.26
1974
12.1
18.9
3.3
80.46
1911
69.7
51.9
56.5



82.04
2016
51.9
19.4
90.9
82.44
2037
12.1
19.4
2.8
81.64
1995
69.7
51.9
57.9



83.24
2079
51.9
19.4
90.9
83.62
2121
12.7
17.9
3.3
82.84
2058
69.7
51.9
57.6



84.42
2142
36.2
14.8
90.9
84.82
2163
9.3
12.8
3.3
84.02
2142
39.3
51.9
53.5



85.61
2163
26.6
11.2
90.9
86.01
2163
8.4
11.7
3.3
85.22
2163
28
51.9
46.1



86.8
2184
36.8
14.8
90.9
87.2
2184
11.8
14.8
3.3
86.4
2163
32.1
51.9
50.8



87.99
2184
35.7
14.3
90.9
88.38
2184
11.2
14.3
2.8
87.59
2184
35.7
51.9
56.5



89.18
2184
25.8
11.2
90.9
89.58
2184
12.7
15.3
2.8
88.78
2184
28
51.9
50.8



90.36
2184
24.7
10.2
90.9
90.76
2163
10.5
13.8
2.8
89.98
2184
28.3
51.9
43.4



91.56
2184
42
15.8
90.9
91.96
2163
8.7
12.8
2.8
91.16
2163
22.8
51.9
40.6



92.74
2184
39.3
15.8
91.8
93.14
2184
9.9
13.3
2.8
92.34
2184
27.7
51.9
42.5



93.93
2205
31.3
12.8
91.8
94.33
2205
9.3
12.8
2.8
93.54
2205
31
51.9
45.3



95.12
2226
28.8
12.2
91.8
95.52
2184
3.4
4.6
2.2
94.73
2205
32.1
51.9
47.2



96.32
2163
0
-1
91.8
96.71
2163
3.4
-1
2.8
95.92
2184
0
51.9
30.2



97.5
2121
4.1
4.1
91.8
97.9
2100
3.1
4.6
3.3
97.1
2142
0
51.9
28.5



98.69
2079
1.1
2
91.8
99.08
2079
3.1
0.5
2.2
98.3
2100
3
51.9
17.8



99.88
2037
0.8
0.5
91.8
100.28
2016
2.8
1.5
2.8
99.48
2058
0.8
51.9
17.8



101.06
2037
41.5
15.3
91.8
101.46
2058
12.4
18.9
3.3
100.67
2016
31.6
51.9
20.6



102.26
2121
51.9
19.4
91.8
102.66
2142
12.7
19.4
3.3
101.86
2079
69.7
51.9
57.6



103.45
2205
51.9
19.4
91.8
103.84
2226
13.3
19.9
3.3
103.05
2163
69.7
51.9
57.6



104.63
2226
0
-0.5
91.8
105.03
2226
3.4
-1.5
2.2
104.24
2205
0.3
51.9
26.9



105.82
2205
0
-1.5
91.8
106.22
2184
3.4
-1
2.2
105.43
2205
0
51.9
28.3



107.01
2163
0
-1
91.8
107.41
2163
3.4
-1
2.2
106.62
2184
0
51.9
27.2



108.21
2142
0
-0.5
91.8
108.6
2142
3.4
-0.5
2.2
107.81
2163
0
51.9
28.3



109.39
2121
0
-0.5
91.8
109.79
2121
3.1
-0.5
2.8
109
2142
0
51.9
28



110.58
2100
0
0
90.9
110.97
2100
3.1
0
2.8
110.19
2121
0
51.9
26.9



111.77
2100
0
0
90.9
112.17
2079
3.1
0
2.2
111.38
2100
0
51.9
28.8



112.97
2079
0
0
90.9
113.36
2058
3.1
0
2.2
112.57
2079
0
51.9
27.5



114.15
2058
0
0
90.9
114.54
2058
3.1
0
2.8
113.75
2058
0
51.9
27.7



115.34
2037
0
0
90.9
115.73
2037
2.8
0
2.2
114.94
2037
0
51.9
28



116.53
2016
0
0.5
90.9
116.95
2016
2.8
0
2.2
116.13
2037
0
51.9
28



117.75
2016
0
0.5
90.9
118.16
2016
2.8
0.5
2.8
117.33
2016
0
51.9
27.7



118.98
1995
0
0.5
90.9
119.38
1995
2.8
0.5
2.2
118.58
1995
0
51.9
27.2



120.17
1974
0
0.5
90.9
120.57
1974
2.8
0.5
2.8
119.77
1995
0
51.9
27.7



121.39
1974
0
0.5
90.9
121.8
1953
2.8
0.5
2.8
120.97
1974
0
51.9
27.7



122.62
1953
2.7
3.1
90.9
123.03
1974
2.8
5.6
2.8
122.22
1953
0
51.9
28.3



123.82
1974
10.4
6.6
90
124.21
1974
2.8
6.1
2.8
123.42
1953
11.5
51.9
17.8



125
1974
4.7
5.1
90
125.4
1974
2.8
5.1
2.8
124.6
1974
5.5
51.9
17.8



126.19
1974
4.7
5.1
90
126.59
1974
2.8
5.1
2.2
125.8
1974
4.7
51.9
17.8



127.39
1974
7.4
5.6
90
127.79
1974
2.8
5.6
2.8
126.99
1974
6.3
51.9
17.8



128.59
1995
9.3
5.6
90
129.01
1995
3.4
7.7
3.3
128.19
1974
6.9
51.9
17.8



129.82
2016
14
7.7
90
130.24
2016
3.4
7.1
2.8
129.41
1995
14
51.9
18.9



131.03
2037
11.5
6.6
90
131.43
2037
3.1
6.6
3.3
130.63
2016
13.2
51.9
21.4



132.23
2037
2.5
5.1
90
132.63
2037
3.1
0
2.8
131.83
2037
10.7
51.9
18.9



133.44
2037
0
0
90
133.86
2016
2.8
0.5
2.2
133.03
2037
0
51.9
29.1



134.67
1995
0
0.5
90
135.07
1995
2.8
0.5
2.2
134.28
2016
0
51.9
29.6



135.86
1995
0
0.5
90
136.26
1995
2.8
5.1
2.8
135.46
1995
0
51.9
30.2



137.05
2037
46.1
17.3
89.1
137.45
2079
12.4
18.4
3.9
136.66
1995
43.1
51.9
50.2



138.25
2121
32.7
14.3
89.1
138.65
2121
3.1
4.1
3.3
137.85
2100
49.7
51.9
57.6



139.45
2100
0
0
89.1
139.86
2100
3.1
0
2.2
139.05
2100
0
51.9
31



140.68
2079
0
0
89.1
141.09
2079
3.1
0
2.2
140.26
2079
0
51.9
29.9



141.89
2079
9.6
5.6
89.1
142.29
2079
5.9
9.7
3.3
141.49
2058
3.3
51.9
24.7



143.09
2058
0
1
89.1
143.51
2058
3.1
0
2.2
142.69
2037
1.6
51.9
27.5



144.34
2016
0
0.5
89.1
144.74
2016
2.8
0.5
2.2
143.92
2037
0
51.9
27.2



145.53
1995
10.2
6.1
89.1
145.93
1995
2.8
6.1
2.2
145.14
2016
6
51.9
24.2



146.73
1995
9.9
6.1
89.1
147.13
1974
2.8
6.1
2.8
146.33
1995
9.6
51.9
17.8



147.93
1974
9.6
6.1
89.1
148.34
1974
2.8
6.1
2.8
147.53
1974
9.9
51.9
17.8



149.18
1974
9.6
6.1
89.1
149.58
1974
3.1
6.6
2.8
148.76
1974
9.6
51.9
17.8



150.37
1953
11.5
7.1
89.1
150.77
1974
3.1
6.6
2.8
149.97
1974
11.5
51.9
19.5



151.57
1974
18.4
8.7
89.1
151.97
1953
5.3
9.7
3.3
151.17
1953
13.2
51.9
37.6



152.75
1974
23.1
10.2
89.1
153.15
1974
5
9.7
3.3
152.35
1974
23.6
51.9
45.8



153.95
1995
15.6
8.2
89.1
154.33
1974
4
8.2
2.8
153.55
1995
15.6
51.9
29.9



155.13
1974
19.2
9.7
89.1
155.53
1995
4.7
9.2
2.8
154.73
1995
18.4
51.9
30.2



156.31
1995
18.7
9.2
89.1
156.71
1995
4.7
9.2
3.3
155.93
1995
18.9
51.9
24.7



157.51
1995
18.4
9.2
89.1
157.91
1995
4.7
9.2
3.3
157.11
1995
18.7
51.9
24.2



158.71
1995
18.4
9.2
89.1
159.12
1995
4.7
9.2
2.8
158.31
1995
18.4
51.9
25



159.96
2016
17.8
8.7
89.1
160.35
1995
4
8.7
2.8
159.54
1995
18.4
51.9
24.4



161.15
1995
12.6
7.1
89.1
161.55
1995
2.8
6.1
2.8
160.75
1995
15.9
51.9
31



162.35
1995
9.3
6.1
89.1
162.75
1974
2.8
6.1
2.8
161.95
1995
9.6
51.9
17.8



163.53
1953
9.1
6.1
89.1
163.93
1953
3.1
7.1
2.8
163.13
1953
9.1
51.9
17.8



164.73
1953
14.8
7.7
89.1
165.11
1932
3.4
8.2
2.8
164.33
1953
13.7
51.9
26.1



165.91
1953
22.2
9.7
89.1
166.31
1953
10.9
13.3
3.3
165.51
1932
15.4
51.9
22.2



167.09
1995
51.9
18.9
89.1
167.49
2016
12.1
19.4
2.8
166.71
1974
50.2
51.9
57.9



168.29
2058
51.9
19.4
89.1
168.69
2100
12.4
19.4
3.3
167.89
2037
63.1
51.9
57.9



169.49
2163
51.9
19.4
89.1
169.91
2184
13
19.4
3.3
169.09
2121
62.9
51.9
57.6



170.73
2247
51.9
19.9
89.1
171.13
2268
13.3
19.9
3.9
170.32
2205
63.1
51.9
57.6



171.93
2310
51.9
19.9
89.1
172.33
2331
13.6
19.9
3.9
171.53
2289
62.9
51.9
57.6



173.11
2394
51.9
19.9
89.1
173.51
2415
14.3
19.9
3.9
172.73
2373
62.9
51.9
57.4



174.31
2394
0
-0.5
89.1
174.71
2373
4.3
-2
2.8
173.91
2394
0.5
51.9
29.6



175.49
2331
0
-2
89.1
175.89
2310
4
-2.6
2.8
175.09
2352
0
51.9
28.5



176.69
2289
0
-2.6
89.1
177.08
2268
3.7
-2
2.2
176.29
2310
0
51.9
28



177.87
2226
0
-1.5
89.1
178.27
2226
3.4
-1.5
2.2
177.47
2247
0
51.9
28.8



179.07
2184
3.6
3.6
89.1
179.47
2163
3.4
4.1
2.8
178.67
2205
0
51.9
29.6



180.27
2163
9.9
5.6
89.1
180.68
2142
3.4
5.6
2.8
179.87
2163
8.8
51.9
17.8



181.52
2142
10.4
6.1
89.1
181.91
2121
5.3
8.2
2.8
181.1
2142
10.2
51.9
17.8



182.73
2163
44.2
16.8
89.1
183.13
2184
13
18.9
3.9
182.33
2142
42
51.9
54.9



183.91
2226
51.9
19.4
90
184.31
2247
13.3
19.9
3.3
183.53
2205
57.1
51.9
57.6



185.12
2268
29.9
13.3
90
185.54
2268
4
6.1
2.8
184.71
2268
43.6
51.9
57.6



186.35
2310
51.9
19.9
90
186.75
2331
13.6
19.9
3.9
185.96
2310
54.9
51.9
44.7



187.55
2394
51.9
19.9
90
187.95
2415
14.3
19.9
3.3
187.15
2352
69.7
51.9
57.4



188.76
2457
51.9
20.4
90
189.18
2478
14.6
20.4
3.9
188.35
2436
69.7
51.9
57.4



190
2541
51.9
20.4
90
190.41
2541
14.9
20.4
3.9
189.6
2499
69.7
51.9
57.4



191.21
2604
51.6
20.4
90
191.61
2625
15.5
20.4
3.3
190.81
2562
69.5
51.6
57.1



192.39
2646
51.6
20.9
90
192.79
2667
16.1
20.9
3.3
191.99
2646
69.2
51.6
56.8



193.59
2730
51.3
20.9
90
193.97
2730
16.4
21.4
3.3
193.19
2709
68.9
51.3
56.8



194.77
2772
51.3
21.4
90
195.17
2793
17.1
21.4
3.9
194.37
2751
68.6
51.3
56.5



195.95
2835
51.1
21.4
90
196.35
2856
17.4
21.9
3.3
195.57
2814
68.6
51.3
56.3



197.15
2898
51.1
21.9
90
197.55
2919
17.7
21.9
3.3
196.75
2877
68.4
51.1
56.3



198.36
2961
51.1
21.9
90
198.76
2961
18.3
22.4
3.3
197.95
2940
68.1
51.1
56



199.61
3003
50.8
22.4
90
200.01
3024
18.6
22.4
3.3
199.19
2982
67.8
50.8
56



200.79
3066
50.8
22.4
90
201.19
3066
18.9
22.4
3.3
200.41
3045
67.5
50.8
55.7



201.99
3108
50.5
22.9
90
202.39
3108
19.5
22.9
2.8
201.59
3087
67.3
50.5
55.7



203.17
3150
50.2
22.9
90
203.57
3150
19.8
22.9
2.8
202.77
3129
67.3
50.5
55.7



204.37
3129
0
0
90
204.75
3129
9.9
-1.5
2.2
203.97
3171
36.8
50.2
55.5



205.55
3087
0
-1.5
90
205.95
3045
9.6
-1.5
2.2
205.15
3087
0
50.5
28.8



206.75
3024
5.8
1.5
90
207.16
3003
9.3
0
2.8
206.35
3024
5.5
50.8
28



207.95
3024
50.8
20.9
90
208.36
3003
18.6
22.4
3.9
207.55
3003
20.3
50.8
19.2



209.18
3045
50.8
22.4
90
209.57
3066
18.9
22.4
3.3
208.76
3024
59.8
50.8
55.7



210.39
3087
50.5
22.9
90
210.77
3108
19.2
22.9
2.8
209.99
3066
62.3
50.5
55.7



211.57
3150
50.2
22.9
90
211.97
3171
19.8
22.9
3.3
211.17
3129
67.3
50.5
55.7



212.77
3192
50.2
22.9
90
213.17
3213
20.2
22.9
3.3
212.37
3171
67
50.2
55.5



213.95
3234
50
22.9
90
214.35
3234
20.5
23.5
3.3
213.55
3213
67
50
55.5



215.15
3255
49.7
23.5
90
215.53
3276
20.8
23.5
3.3
214.75
3255
66.7
50
55.2



216.33
3297
49.7
23.5
90
216.73
3318
20.8
23.5
2.8
215.93
3276
66.7
49.7
55.2



217.53
3339
49.7
23.5
90
217.93
3339
21.1
23.5
2.8
217.13
3318
66.7
49.7
55.2



218.71
3360
49.4
23.5
90
219.11
3360
21.4
23.5
2.8
218.31
3360
66.4
49.4
55.2



219.91
3381
49.4
23.5
90
220.29
3402
21.4
23.5
2.8
219.51
3381
66.4
49.4
55.2



221.09
3402
49.1
23.5
90
221.49
3423
21.7
24
2.8
220.69
3402
66.4
49.4
54.9



222.27
3444
49.1
24
90
222.67
3444
22
24
2.8
221.89
3423
66.2
49.1
54.9



223.47
3465
49.1
24
90
223.87
3465
22
24
2.8
223.07
3444
66.2
49.1
54.9



224.67
3444
1.1
0
90
225.07
3444
11.8
-1.5
2.2
224.27
3486
66.2
48.9
54.9



225.88
3381
0
-2
90
226.28
3360
11.5
-2
2.2
225.46
3402
0
49.1
31.8



227.11
3276
0
-2
90
227.51
3255
10.9
-1
2.2
226.69
3318
0
49.7
28.5



228.31
3276
49.7
23.5
90
228.71
3297
20.8
23.5
2.8
227.91
3276
63.7
49.7
49.1



229.54
3318
49.7
23.5
90
229.95
3318
21.1
23.5
2.8
229.12
3297
66.7
49.7
55.2



230.75
3276
0
0
90
231.15
3276
10.9
-2
2.8
230.35
3339
46.7
49.7
55.2



231.95
3213
0
-1.5
90
232.35
3192
10.2
-1.5
2.2
231.55
3234
0
50
29.9



233.15
3150
0
-1.5
90
233.56
3129
9.9
-1.5
1.7
232.75
3171
0
50.2
28



234.38
3066
0
-1.5
90
234.79
3045
9.6
-1.5
2.2
233.98
3087
0
50.5
27.2



235.59
3003
0
-1
90
235.99
2982
9
-1
2.2
235.19
3003
0
50.8
26.6



236.79
2940
0
-1
90
237.19
2919
8.7
-1
2.2
236.39
2961
0
51.1
26.4



237.98
2856
0
-1
90
238.37
2835
8.1
-1
2.2
237.59
2898
0
51.1
26.9



239.17
2793
0
-1
90
239.57
2772
7.8
-1
2.2
238.77
2835
0
51.3
26.9



240.36
2730
0
-1
90
240.76
2709
7.1
-1
2.2
239.96
2751
0
51.3
26.4



241.55
2667
0
-1
90
241.94
2646
6.5
-1.5
2.2
241.15
2688
0
51.3
27.2



242.74
2604
0
-1.5
90
243.13
2583
6.2
-1.5
2.2
242.35
2625
0
51.6
27.7



243.93
2520
0
-1.5
90
244.34
2478
5.3
-2
2.2
243.53
2541
0
51.6
27.5



245.16
2394
0
-2
90
245.57
2373
4.7
-2
2.2
244.76
2436
0
51.9
28.3



246.37
2310
0
-2.6
90
246.77
2268
3.7
-2
2.2
245.97
2352
0
51.9
28.8



247.57
2184
0
-1
90
247.97
2100
3.1
0
2.2
247.17
2247
0
51.9
29.4



248.76
1953
0
0.5
90
249.16
1869
2.5
1
2.2
248.37
2037
0
51.9
27.5



249.98
1764
0
1.5
90
250.39
1722
2.2
2
2.2
249.56
1827
0
51.3
25.8



251.21
1659
0
2
90
251.61
1638
1.9
2
2.2
250.81
1680
0
50
25.3



252.41
1617
0
2
90
252.8
1617
1.9
2.6
2.2
252.01
1638
0
49.4
25.5



253.62
1596
36
13.3
90
254.03
1617
12.4
16.8
2.8
253.2
1596
2.2
48.9
25.3



254.86
1659
50
17.9
90
255.26
1701
11.8
17.9
3.3
254.45
1638
56.3
49.4
56.5



256.09
1764
50.8
18.4
90
256.49
1785
11.8
18.4
3.3
255.68
1722
63.1
50.5
57.4



257.31
1848
51.3
18.9
90
257.71
1869
11.8
18.9
3.3
256.91
1827
64.5
51.3
57.6



258.51
1932
51.9
18.9
90
258.91
1953
12.1
18.9
3.3
258.11
1911
66.7
51.9
57.6



259.69
2016
51.9
19.4
90
260.09
2037
12.1
19.4
3.3
259.29
1995
68.1
51.9
57.9



260.89
2079
51.9
19.4
90
261.28
2100
12.4
19.4
3.3
260.49
2058
69.7
51.9
57.6



262.1
2079
0
3.6
90
262.51
2037
3.1
0
2.2
261.68
2037
6.6
51.9
57.9



263.33
1953
0
0.5
90
263.75
1869
2.5
1
2.8
262.93
1995
0
51.9
29.4



264.56
1701
0
2
90
264.97
1617
1.9
2
2.2
264.14
1806
0
51.1
25.8



265.79
882
6.6
7.1
90
266.2
903
0
6.6
2.8
265.37
1239
0
39.8
28.3



267
882
4.7
6.6
90
267.39
882
0
6.6
3.3
266.6
882
0
30.5
21.1



268.18
882
4.4
6.6
90
268.58
882
0
6.6
2.8
267.79
882
0
30.5
21.1



269.37
1386
25
11.7
90
269.76
1449
12.7
13.3
2.8
268.98
882
0
30.5
21.1



270.56
1659
49.4
17.3
90
270.98
1743
11.5
18.4
2.8
270.16
1554
66.2
48.3
47.2



271.79
2016
48.3
18.4
90
272.21
2142
12.7
19.4
3.3
271.38
1890
49.7
51.6
57.6



273.02
2226
0
0
90
273.41
2184
3.4
-1
2.2
272.62
2226
23.6
51.9
57.6



274.21
2016
0
0
90
274.6
1932
2.8
1
2.2
273.81
2121
0
51.9
29.4



275.39
1848
5.8
5.1
90.9
275.79
1827
2.5
6.6
2.8
275
1890
0
51.9
26.9



276.58
1848
27.5
10.2
90.9
276.98
1890
11.8
14.8
3.3
276.19
1827
18.4
51.3
34.9



277.77
2058
39
14.8
90.9
278.15
2121
12.7
18.4
3.3
277.37
1953
34.9
51.9
57.9



278.95
2331
51.9
19.9
90.9
279.35
2457
14.3
20.4
3.9
278.55
2247
55.5
51.9
57.6



280.15
2688
51.3
20.9
90.9
280.55
2667
6.8
2
3.3
279.75
2562
62.6
51.6
57.1



281.34
2604
0
-1.5
90.9
281.74
2562
5.9
-1.5
2.8
280.94
2625
0
51.6
31



282.53
2436
0
-2
90.9
282.92
2394
4.7
-2
2.2
282.13
2499
0
51.9
28.5



283.72
2310
0.8
-2
90.9
284.14
2268
3.7
0.5
2.2
283.32
2352
0
51.9
29.6



284.97
2310
43.9
15.8
90.9
285.37
2415
14.3
19.9
3.9
284.55
2247
14.5
51.9
17.8



286.17
2625
51.6
20.9
90.9
286.57
2751
16.4
21.4
3.3
285.78
2499
64
51.9
55.7



287.35
3045
50.8
21.9
90.9
287.76
3108
19.2
22.9
3.3
286.95
2877
68.4
51.1
56.3



288.59
3339
49.4
23.5
90.9
289.01
3465
22
24
3.3
288.18
3213
67
50
55.5



289.81
3717
48
24.5
90
290.21
3843
23.6
24.5
4.4
289.41
3591
65.6
48.6
54.6



291.01
2604
37.6
10.2
90
291.4
2667
15.8
19.9
3.3
290.61
3612
0
48.3
39.8



292.2
2814
51.3
21.4
90
292.6
2856
17.4
21.9
3.3
291.8
2730
68.9
51.3
50.5



293.42
2961
51.1
21.9
90
293.83
3003
18.6
22.4
3.3
293
2919
68.1
51.1
56



294.65
3087
50.5
22.4
90
295.05
3129
19.5
22.9
3.3
294.23
3045
67.5
50.8
55.7



295.84
3213
50
22.9
90
296.23
3255
20.5
23.5
3.3
295.44
3171
67
50.2
55.5



297.03
3255
0
0.5
90
297.42
3255
10.9
-1.5
2.2
296.63
3276
62.6
49.7
55.2



298.22
3192
0
-1.5
90
298.62
3171
10.2
-1.5
2.2
297.83
3234
0
50
29.6



299.42
3108
0
-1.5
90
299.82
3087
9.9
-1.5
1.7
299.02
3150
0
50.2
26.6



300.63
3045
0
-1.5
90
301.03
3003
9.3
-1
2.2
300.22
3066
0
50.5
26.6



301.86
2961
0
-1
90
302.26
2835
8.1
-1
2.2
301.45
2982
0
50.8
25.8



303.06
2520
0
-1.5
90
303.46
2373
4.3
-2
2.8
302.66
2667
0
51.6
26.1



304.29
2100
0
0
90
304.71
1953
2.8
0.5
2.2
303.88
2226
0
51.9
28.8



305.51
1701
0
2
90
305.91
1218
0.6
3.1
2.8
305.11
1827
0
51.3
26.1



306.72
903
5.2
6.6
90
307.1
1302
0.9
3.1
2.8
306.32
861
0
30.5
21.1



307.9
1785
6
5.1
90
308.3
1827
11.8
14.3
3.3
307.5
1827
0
51.1
25.3

[S66MJETDI]

Google44

Have a look at "Injection Deviation Quantity" in engine measuring blocks (I forget the number). Even though the stated limits are +/- 2.5, from what I've read, +/- 1 is a sign of an injector on it's way out. It could be that one is over-fuelling. A tell-tale symptom of this is blue smoke from the exhaust, particularly at startup.

Read somewhere that de-catting a 1.9 can put too much strain on the turbo shaft with the increased back pressure, leading to turbo failure (only repeating others opinions here though)

Removing the cat removes restriction in flow - therefore reduces back pressure ?

[Google44]

It looks like 'Synchro. angle' in block 4 is the timing. That looks withing the spec of -3 to 3. However, it sits in always in positive meaning timing is advanced?

[S66MJETDI]

I'm led to understand 0-0 - 0.5 is ideal.....

[Google44]

I have seen that too. It claims that 0.5 to 1.0 is best. If someone can confirm that value I've listed is timing I should be able to try to turn in unticlockwise a bit.

[S66MJETDI]

This I need to sort out.......

[ajrayner]

Removing the cat removes restriction in flow - therefore reduces back pressure ?

Yep, you're right but it still increases stress on turbo shaft apparently by spinning up too quick

[S66MJETDI]

Yep, you're right but it still increases stress on turbo shaft apparently by spinning up too quick

Seems like a damn fine excuse for a more beefy turbo...... once my niggles are sorted out the old girl will be receiving a mild remap .... So it wont hurt.... I hear there are a few of the 170bhp rated 2.0tdi's that bolt straight on, I assume these may be a little stronger, can anyone confirm?

[ajrayner]

Google44

Monitoring synchro angle at idle is sufficient...ideally 0 but you can always monitor the fuel consumption (also in engine measuring blocks in VCDS) at idle with any adjustments you make to find your "sweet spot".

A mass of numbers from a log is difficult for anyone to read. Check out this site (https://sites.google.com/site/1810martin/vcds-and-pd-tdi-engine-health-check) for tips on how to turn the data into more useful graphs and also excellent gen regards engine health checking using VCDS. It's a passat website but it's the same 1.9 PD engine in our Audis

[S66MJETDI]

Just to add to my suspicion that my mpg issue was poor timing . Over the last few days I have ratcheted up 47 miles since reseting the timing..... every time I get in the car now it seems smother and more powerful like the ecu is readjusting something or something is clearing...... Is there a rational explanation for this - would the ecu be relearning or is it not that bright on this age of car?

[ajrayner]

In a nutshell, if the timing is out then fuel is injected into the cylinder at a point where the piston is not in the optimum position to generate maximum driving force on the crankshaft for that given squirt of fuel. The result of this is a reduction in torque (moving force) for the fuel squirt amount. The ecu can compensate for this mismatch to a certain degree by delaying/advancing the fuel squirt. It can only do so much though and is no substitute for mechanical harmony between cam and crank ie fuel squirt happens when piston is at maximum extension. This leaves to ecu to concentrate on providing the drivers wish map effectively ie throttle pedal position.

Not an experts explanation but hopefully it makes some sense!? If you really want the juicy details the checkout this bedtime reading (http://www.myarchive.us/richc/VW_TDI_with_PumpeDuse.pdf).

[S66MJETDI]

Lol I'm familiar with the static burn rates of fuel at different temps and the constant need to adjust injection timing to compensate for the dynamic changes in the speed of the piston stroke...... just wondered if the ECU's in our cars were advanced enough to relearn optimum settings in relation to static engine settings. ( I spent many years repairing jet aircraft engines...... slightly different in operation but many of the principles still hold.)

[S66MJETDI]

P.s thanks for the doc though theres always learning to be had....... :) Shall give it the once over tonight.

[ajrayner]

Ha, so why didn't you say so! :-)

Not sure on the ecus ability to relearn though. I will make it the subject of my next google knowledge quest! I'm an aircraft engineer myself but of the wiggly electron variety so I will consider it my duty to gen up on the wiggly electron powered ecu :-)

[S66MJETDI]

One thing that has struck me, is when I had the car on VCDS I noted the intake air temp was reading 40 deg now I can't for the life of me remember if that was Celsius or F..... I assumed C and put the high temp down to gains through compression in the turbo but now I wonder if thats a bit high and the sensor is u/s. However if it reads F that would be 4.4 deg C and probably actually not far off ambient. More research to be done.... Lol

[S66MJETDI]

So Electrician or Avionics ?

[Google44]

I've replaced yesterday glow plugs. I've also sorted the timing. Now sits on 0.0 and occasionaly jumps to 0.6. The glowplugs sorted the lumpy startup and smoke. I don't think it sorted the mpg tho. A word of warning if anyone is to adjust their timing. Do it with very small moves - just a nodge! moving it for more then couple of millimiters and your car does not start. It took me a bit to get it correct.

[S66MJETDI]

Well done..... will have to let us know how it goes over a brimmed tank....

[Google44]

will do. I am back next week when I will test it with full tank. I will be also looking for 2.0 tdi turbo. Think I can hear something like waste gate or shaft wobble when accelerator is taken of suddenly. However, it drives perfect. Need to have a look at that leak at the back too so all in all busy Spring!

[S66MJETDI]

There is no waste gate on these as the VNT deals with excess pressure...... Have you given the VNT actuator arm some attention and made sure it has a full and free range of movement. Re that noise mine has been making it for ages - I thought initially it was fly wheel related but know now it's definitely not. If you unplug the MAP sensor on the plastic boost pipe and force the car into limp mode thus shutting down the turbo that noise disappears....... I did wonder if I had a split in a pipe somewhere on the induction pipework as the noise only appears when the manifold would be under vacuum.....

[ajrayner]

One thing that has struck me, is when I had the car on VCDS I noted the intake air temp was reading 40 deg now I can't for the life of me remember if that was Celsius or F..... I assumed C and put the high temp down to gains through compression in the turbo but now I wonder if thats a bit high and the sensor is u/s. However if it reads F that would be 4.4 deg C and probably actually not far off ambient. More research to be done.... Lol

From the temperature logs I have carried out in the past I found that intake temperature was often 20-30 deg C above ambient temp. I just put this down to inefficient intercooler and hot egr gasses being fed into the intake. Looking at intake, ambient, fuel and coolant temps using VCDS on a cold engine should show them all to be the same, indicating all temp sensors are serviceable.

Originally avionics but cross-trained to electrical now, too. Just don't ask me to explain motor windings :D

[ajrayner]

will do. I am back next week when I will test it with full tank. I will be also looking for 2.0 tdi turbo. Think I can hear something like waste gate or shaft wobble when accelerator is taken of suddenly. However, it drives perfect. Need to have a look at that leak at the back too so all in all busy Spring!

Some bigger audi turbos are a straight bolt but your car would require a custom remap and uprated injectors to get the best performance improvement. There's plenty of info out there on the forums. Alternatively, there's plenty of turbo reconditioning places out there that can return your turbo to a nearly new condition for a fraction of the cost.

[Google44]

There is no waste gate on these as the VNT deals with excess pressure...... Have you given the VNT actuator arm some attention and made sure it has a full and free range of movement. Re that noise mine has been making it for ages - I thought initially it was fly wheel related but know now it's definitely not. If you unplug the MAP sensor on the plastic boost pipe and force the car into limp mode thus shutting down the turbo that noise disappears....... I did wonder if I had a split in a pipe somewhere on the induction pipework as the noise only appears when the manifold would be under vacuum.....



I've confirmed yesterday that noise is definetly coming from turbo. When MAP is disconnected there is no noise when pedal is off. Cannot fault the car how it drives of pulls. Just worried about that noise as it sounds like rattlly turbo shaft in exhaust.

Also, as far as mpg the best I get out of it is 42 mpg mixed. Over 50mpg figures only when doing 60 mph on motorway.

[ajrayner]

Also, as far as mpg the best I get out of it is 42 mpg mixed. Over 50mpg figures only when doing 60 mph on motorway.

I'd be happy with them figures. Using the numbers off my service sticker, Audi think I can get the following out of my 1.9tdi sport:

Urban - 7.7 litres/100km = 37mpg
Out of town - 4.8 litres/100km = 59mpg
Combined 5.8 litres/100km = 49mpg

If we lived in a world with no air or rolling resistance then yes! Audi recently got a slap on the wrist when a customer complained that his new A3's quoted figures were just not attainable.

[S66MJETDI]

I'm going to try and clean the vanes with some Mr Muscle oven cleaner in the coming days incase the noise is as a result of something not moving as it should.....

[ajrayner]

I'm going to try and clean the vanes with some Mr Muscle oven cleaner in the coming days incase the noise is as a result of something not moving as it should.....

Didn't have a problem with mine but did the Mr Muscle anyway. Stained the floor under the exhaust with a big patch of soot so it cleaned something out! Also, if you have a registered version of VCDS or VCDS Lite there is an engine "health check" you can run (engine, output test, i think) which repeatedly moves the actuator arm under vacuum so you can get eyes on and observe if it's sticking.

[S66MJETDI]

Sadly I'm without access to VCDS I'm still waiting to check the synchro angle on the cam....

[ajrayner]

Ah, bummer! Well if you're passing anywhere near Swindon, I'd be happy to help.

[S66MJETDI]

Cheers mate will bear that in mind..... which Swindon?

[ajrayner]

Oh yeah, forgot there's one in Dudley near you. I'm Wiltshire, I'm afraid.

[S66MJETDI]

Thanks anyway..... :)

[S66MJETDI]

Update: last brimmed tank 560miles, 64 litres to refill to the brim = 40mpg over the tank. Pretty happy with that but theres still something not quite right.... can't put my finger on it but it's just not as quiet and smooth as my AWX engined passat was....

[richie190784]

Have you tried changing the O2/Lambda sensor?

If this is clogged up this could also cause incorrect figures to go to the ecu which then mucks up the fuelling?

[S66MJETDI]

Hmmmm do diesel's have these?

[richie190784]

Hmmmm do diesel's have these?

I read somewhere that some diesels do have them, upon thinking about it a little more, there wouldnt be much point in an lambda probe as it would just get sooted up....that will teach me for posting 5mins after waking up..

[S66MJETDI]

Lol..... thanks for taking the time though....

[richie190784]

Lol..... thanks for taking the time though....

Had another thought, was going to get this done on my car but when I found out how much it was decided to wait till I get my A4.

Have you heard of Terraclean? I've watched a few vids on youtube and it looks to do a good job, they also do a diesel version called TerraDiesel, which is a machine they hook up directly to the fuel rail, turn off the fuel pump, it has 2 stages of cleaning, pre and post injectors and supposedly removes all carbon from the fuel rail to the tip of the back boxes.

Might be worth looking into??

[ajrayner]

Update: last brimmed tank 560miles, 64 litres to refill to the brim = 40mpg over the tank. Pretty happy with that but theres still something not quite right.... can't put my finger on it but it's just not as quiet and smooth as my AWX engined passat was....


Sounds like you're getting there but get yourself VCDS. I got a "test" lead from ebay (less than a tenner from UK seller) and used this with the Ross Tech VCDS Lite software. This gives access to all measuring blocks and can read fault codes on an individual module basis. I have since registered my copy and can now auto scan, perform output tests and change codings/adaptations. No guarantees that these test leads will work but for under a tenner, it's worth a gamble (sorry but can't find the seller I got mine from as it's been too long and has dropped out of my history).

Basically, when I recently did my timing, I locked everything up with the pins, etc and when I first fired up the engine, I could tell straight away that it wasn't right...sounded really lumpy. Lo and behold, VCDS showed -2.6 as my synchro angle. A quick tweak of the cam sprocket and bang on 0 and running well.

[Alfonzo]

My last tankload returned a (real value) 50 mpg. This is in a AWX 1.9 SE with 107k on the clock, mostly commuting on country roads at 40 - 50mph, and driving like a girly :-)
My economy has got better and better due to replaced thermostat, running through a tank of posh diesel (made quite a difference!) and the weather warming up.The weather certainly helps, but roads & driving style are the biggest influence.

[S66MJETDI]

Had another thought, was going to get this done on my car but when I found out how much it was decided to wait till I get my A4.

Have you heard of Terraclean? I've watched a few vids on youtube and it looks to do a good job, they also do a diesel version called TerraDiesel, which is a machine they hook up directly to the fuel rail, turn off the fuel pump, it has 2 stages of cleaning, pre and post injectors and supposedly removes all carbon from the fuel rail to the tip of the back boxes.

Might be worth looking into??

Can this still be done on PD engines? They don't have a fuel rail as such and the injectors as I understand it can be a bit sensitive to additives etc...

[Google44]

I would not bother. Mine pulls well. Just the economy is bad. If you not carefull you can end around 35 easy. Still need to sort the oil leak at the back of engine. May change tandem pump. If anyone is close to Derby I would like to meet up and compare it to his car. Just to rule out any placebo effect. Guess the benefit would be for both of us.

[ajrayner]

Can this still be done on PD engines? They don't have a fuel rail as such and the injectors as I understand it can be a bit sensitive to additives etc...

Ran a litre of Liqui Moly Diesel Purge through mine...there was a big black patch under the exhaust when done so it cleaned something out. Ideally, do it before an oil and fuel filter change so any 'sediment' isn't sloshing round the engine.