UK-POLOS.NET - THE VW Polo Forum

Yesterday I went to a VAG specialist with the car. He connected a diagnostics tool and did the following measurements:

On idle, lambda probe 1 (before catalytic converter) is switching like it should between 0.1 and 0.9V and lambda probe 2 (behind catalytic converter) has a static output voltage of ...

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 ...

Yesterday I got the timing chain checked by a professional garage.
They used a PicoScope and measured the time between the pulses of the camshaft and crankshaft sensor. Then they compared these results with a known good engine from the PicoScope database.

The time was exactly the same so my timing ...

Thanks for your reply, no I haven't checked the timing yet.
How can I check if the timing is still OK? Or is this someone that can only be done with professional equipment?

Searching around on the internet, there are a lot of 3 cyl 1.2 VW engines with timing chain problems. So I think that this ...

I have the exact same issue with my Polo 9N3 1.2 from 2008 with engine code BBM. (Does your car have the same engine code?)
I have had this issue for the last 2 years and I am unable to fix it.

Tried multiple things
- relearn throttle body
- replaced lambda probe
- replaced front half of exhaust ...