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16555 Fuel Trim System Too Lean Bank 1 P0171 35-10 Intermittent. I've changed breather hose and MAF.

16555 Fuel Trim System Too Lean Bank 1
P0171 35-10 Intermittent
P0171 35-00

I have recently changed the MAF and replaced with a new original VW part.
I have also changed the Breather hose pipe which was cracked, brittle.

However, the engine is still sounding like its hunting. The RPM is sitting just about 800rpm and rumbling whilst its idle.

Not sure what to do.

Please advise. Thanks.

—submitted by psgandhi on July 13th 2009 at 3:16pm.


  • DannytheMechanic
  • Posts: 181

The fuel trim thing is hard to figure out without a factory scan tool or Vag-Com. You did clear codes after the repair right? Start by cleaning the throttle body with carb cleaner. So, which engine do you have?

Danny


  • psgandhi
  • Posts: 3

Hi - sorry for the lack of information.

I have a VW Golf 1.6S Auto Mk4 2003 Petrol Engine.

The codes were cleared after the repair using VAG-com.

The throttle body was changed less than 2 years ago.


  • DannytheMechanic
  • Posts: 181

Can you get the fuel trim information for me out of measured value block 32 with vag-com?

Danny


  • psgandhi
  • Posts: 3

Danny
I have now done the measurements. Can I email this to you as its an excel spreadsheet? I've copied the details below...

Sunday 19 July 2009 11:04:11
06A 906 033 BL SIMOS33 1.6l 2VG00AT4578

Group A: '001 Group B: '002 Group C: '032
RPM Temperature Lambda Bin. Bits RPM Load Inj. On Time Mass Flow Lambda Lambda
TIME TIME TIME
Marker STAMP /min C % STAMP /min % ms g/s STAMP % %
0.78 800 52.5 10.9 10111110 0 800 20.4 3.09 2.12 0.37 24.2 -2
2 800 52.5 10.5 10111110 1.18 800 20.4 3.09 2.09 1.6 24.2 -2
3.25 800 52.5 10.5 10111110 2.42 800 20.4 3.09 2.12 2.83 25 -2
4.48 800 52.5 10.5 10111110 3.65 800 20.4 3.09 2.14 4.06 24.2 -2
5.74 800 52.5 10.9 10111110 4.88 800 20.4 3.09 2.08 5.33 25 -2
7.01 800 52.5 10.9 10111110 6.14 800 20.4 3.09 2.09 6.56 24.2 -2
8.33 800 52.5 10.9 10111110 7.45 800 20.4 3.09 2.14 7.89 24.2 -2
9.58 800 52.5 11.3 10111110 8.77 800 20.4 3.09 2.13 9.17 25 -2
10.83 800 52.5 11.3 10111110 10.01 800 20.4 3.09 2.11 10.43 24.2 -2
12.06 800 52.5 11.3 10111110 11.24 800 20.4 3.09 2.12 11.64 25 -2
13.26 832 52.5 11.3 10111110 12.46 800 20.4 3.09 2.19 12.84 24.2 -2
14.54 800 52.5 10.9 10111110 13.68 800 20.4 3.09 2.12 14.09 24.2 -2
15.85 800 52.5 10.5 10111110 14.96 800 20.4 3.09 2.14 15.4 25 -2
17.19 800 52.5 10.9 10111110 16.31 800 20.4 3.09 2.13 16.75 24.2 -2
18.49 800 52.5 10.5 10111110 17.63 800 20.4 3.09 2.09 18.06 25 -2
19.72 800 52.5 10.2 10111110 18.89 800 20.4 3.09 2.07 19.31 24.2 -2
20.97 800 52.5 10.2 10111110 20.14 800 20.4 3.09 2.12 20.55 24.2 -2
22.17 800 52.5 10.2 10111110 21.39 800 20.4 3.09 2.08 21.79 24.2 -2
23.37 832 52.5 10.5 10111110 22.57 800 20.4 3.09 2.09 22.97 25 -2
24.57 800 52.5 10.5 10111110 23.77 800 20.4 3.09 2.06 24.17 25 -2
25.82 800 52.5 10.5 10111110 24.98 800 20.4 3.09 2.07 25.38 25 -2
27.06 800 52.5 10.9 10111110 26.25 800 20.4 3.09 2.08 26.66 25 -2
28.34 800 54 10.9 10111110 27.48 800 20.4 3.09 2.13 27.91 25 -2
29.59 800 54 10.9 10111110 28.74 800 20.4 3.09 2.01 29.16 25.8 -2
30.87 800 54 10.9 10111110 30.02 800 20.4 3.09 2.03 30.42 25 -2
32.07 800 54 10.9 10111110 31.27 800 20.4 3.09 2.07 31.67 25 -2
33.33 800 54 10.9 10111110 32.49 800 20.4 3.09 2.1 32.92 25 -2
34.6 800 54 11.3 10111110 33.75 800 20.4 3.09 2.04 34.17 25.8 -2
35.84 800 54 11.3 10111110 35 800 20.4 3.09 2.13 35.43 24.2 -2
37.06 800 54 11.7 10111110 36.24 800 20.4 3.09 2.09 36.64 25 -2
38.36 800 54 12.1 10111110 37.51 800 20.4 3.09 2.07 37.94 25 -2
39.56 800 54 11.7 10111110 38.76 800 20.4 3.09 2.06 39.16 25 -2
40.75 800 54 11.7 10111110 39.96 800 20.4 3.09 2.08 40.36 25 -2
42 800 54 11.7 10111110 41.17 832 20.4 3.09 2 41.59 25 -2
43.28 800 54 11.3 10111110 42.4 800 20.4 3.09 2.08 42.83 25 -2
44.53 800 54 11.7 10111110 43.71 800 20.4 3.09 2.09 44.11 25 -2
45.76 800 54 11.3 10111110 44.95 800 20.4 3.09 2.12 45.36 25 -2
47.04 800 54 10.9 10111110 46.19 800 20.4 3.09 2.06 46.61 25 -2
48.24 800 54 10.9 10111110 47.46 800 20.4 3.09 2.12 47.84 25 -2
49.44 800 54 11.3 10111110 48.66 800 20.4 3.09 2.12 49.06 25 -2
50.7 832 54 11.7 10111110 49.86 800 20.4 3.09 2.02 50.29 24.2 -2
51.94 800 54 11.3 10111110 51.12 800 20.4 3.09 2.07 51.52 25.8 -2
53.15 800 54 11.3 10111110 52.35 800 20.4 3.09 2.07 52.77 25 -2
54.4 832 54 10.9 10111110 53.55 800 20.4 3.09 2.04 53.98 25 -2
55.66 800 54 10.9 10111110 54.81 800 20.4 3.09 2.04 55.21 25 -2
56.93 800 54 10.9 10111110 56.06 800 20.4 3.09 2.07 56.49 24.2 -2
58.25 800 54 10.9 10111110 57.37 800 20.4 3.09 2.01 57.81 25.8 -2
59.56 800 54 11.3 10111110 58.7 800 20.4 3.09 2 59.13 25 -2
60.81 800 55.5 12.1 10111110 60 800 20.4 3.09 2.04 60.43 25 -2
62.12 800 55.5 12.1 10111110 61.24 800 20.4 3.09 2.07 61.69 25 -2
63.32 800 55.5 12.5 10111110 62.52 800 20.4 3.09 2.16 62.94 25 -2
64.54 800 55.5 11.7 10111110 63.74 800 20.4 3.09 2.04 64.12 25 -2
65.77 800 55.5 11.7 10111110 64.96 800 20.4 3.09 2.1 65.37 25 -2
67.04 800 55.5 11.7 10111110 66.19 800 20.4 3.09 2.09 66.62 25 -2
68.28 800 55.5 11.7 10111110 67.48 800 20.4 3.09 2.08 67.88 24.2 -2
69.53 832 55.5 11.7 10111110 68.68 800 20.4 3.09 2 69.1 25 -2
70.81 800 55.5 11.7 10111110 69.96 800 20.4 3.09 2.02 70.39 25.8 -2
72.09 800 55.5 12.5 10111110 71.26 800 20.4 3.09 2.01 71.66 25 -2
73.34 800 55.5 13.3 10111110 72.49 800 20.4 3.09 2.11 72.9 25 -2
74.62 800 55.5 13.3 10111110 73.78 800 20.4 3.09 2.12 74.2 25 -2
75.93 800 55.5 12.9 10111110 75.06 800 20.4 3.09 2.06 75.5 24.2 -2
77.29 800 55.5 12.5 10111110 76.39 800 20.4 3.09 2.11 76.84 25 -2
78.5 832 55.5 12.1 10111110 77.7 800 20.4 3.09 2.04 78.1 25 -2
79.75 800 55.5 11.3 10111110 78.9 800 20.4 3.09 1.98 79.33 25 -2
81.08 800 55.5 11.3 10111110 80.2 800 20.4 3.09 2.03 80.61 25.8 -2
82.34 832 55.5 11.7 10111110 81.49 768 20.4 3.09 1.98 81.93 25 -2
83.57 800 55.5 11.7 10111110 82.74 832 20.4 3.09 2.14 83.16 25.8 -2
84.77 800 55.5 11.7 10111110 83.97 800 20.4 3.09 2.08 84.37 25 -2
86 800 55.5 11.7 10111110 85.17 800 20.4 3.09 2.02 85.59 25 -2
87.33 800 55.5 11.7 10111110 86.45 800 20.4 3.09 2.02 86.9 25 -2
88.61 800 55.5 12.1 10111110 87.75 800 20.4 3.09 2.11 88.18 25 -2
89.89 800 55.5 12.5 10111110 89.03 800 20.4 3.09 2.07 89.46 25 -2
91.11 800 55.5 12.5 10111110 90.29 800 20.4 3.09 2.07 90.69 25 -2
92.34 800 55.5 12.1 10111110 91.52 800 20.4 3.09 2.04 91.95 24.2 -2
93.55 800 55.5 12.1 10111110 92.74 800 20.4 3.09 2.06 93.14 25.8 -2
94.87 800 55.5 12.5 10111110 94.02 800 20.4 3.09 2.04 94.45 26.6 -2