Search found 3 matches

by PeterJJ21
Thu Aug 23, 2018 8:26 am
Forum: MK7 (9N3) Polo (inc GTI) - Years 2006-2008
Topic: P0171 Fuel Trim too Lean
Replies: 14
Views: 20922

Re: P0171 Fuel Trim too Lean

Hi All, has anyone had any joy resolving the P0171 Fuel Trim too Lean issue at idle, as at my wits end trying to resolve this problem. One thing I have noticed recently is at start up in the morning the idle revs go up to bet 1500 for about 15 seconds then go back to normal after that and that when ...
by PeterJJ21
Sun Apr 01, 2018 1:54 pm
Forum: MK7 (9N3) Polo (inc GTI) - Years 2006-2008
Topic: Polo 9N3 knocking sound from the back
Replies: 3
Views: 1896

Re: Polo 9N3 knocking sound from the back

Check the rear shocks the rubber mounting at bottom could be failing with metal on metal as the rubber heats up. I had this on mine replaced both rear shocks, not more knocking form the rear.
by PeterJJ21
Sun Apr 01, 2018 12:51 pm
Forum: MK7 (9N3) Polo (inc GTI) - Years 2006-2008
Topic: P0171 Fuel Trim too Lean
Replies: 14
Views: 20922

P0171 Fuel Trim too Lean

I have the P0171 fuel trim system too lean code on my wifes 2008 1.2 polo which is running fine without any issues of roughness, staling or poor starting. I have run the VCDS test for MAP and Lambda sensors which check out fine, I have checked for any vacuum leaks both visually and with a smoke test...