Engine intake problem, maybe?

[Wayne2000]

Hi, I joined here over a year ago to try and fix my car but after reading through countless threads, I am still not sure what is wrong, so any guidance or suggestions will be extremely helpful.

So the problems are.

-Revs when idle are up and down all the way up to 2,000 and a few times have even dropped to 200 and stalled.
-Often if I put my foot down in there is no power, its like I am only touching the accelerator.
-Some times although rare, it will take an extra second or 2 to actually turn the engine on, although this isn't really a problem.
-Some days there is a lot of white exhaust fumes and a smell of petrol.
-Finally, only just found this out because of failing MOT, emissions are high, they said they were extremely high.

Had the MAF sensor changed so far.

Thank you, for any help.

[Doctle Odd]

You'd need to have a diagnostic scan done first

[Wayne2000]

Is that one of them readers that give you fault codes? I will get that done this weekend if that's what it is.

[Doctle Odd]

Yes but it's better to use VAG specific scan tools like VCDS rather than generic OBD scanners

[Wayne2000]

Yes but it's better to use VAG specific scan tools like VCDS rather than generic OBD scanners

Okay thanks again, will see what I can get done this weekend.

[Doctle Odd]

VWAF User Location Map - VCDS - Google Maps

[pauldazzle]

Coolant temp sensor failure is really common, & causes the ECU to fuel incorrectly often resulting in poor idle & starting problems. Ebay OBDII cable (£20ish) & VCDS Lite (free from Ross Tech) is much better than generic code readers.