Help please...'02 A4 2.0FSI Low idle speed/lumpy missfire and sometimes hard to start
Just bought the above car and it runs OK. However, sometimes it takes a couple trys to start, or it will start and cut out then require a bit of accelerator to get it to start.
When its started it doesn't stall but does run a little lumpy with the odd splutter...a definate missfire.
It drives great with what seems like no impact on power or fuel consumption (but then i am coming from a re-mapped BMW 330d so it's gonna feel a lot less powerful).
The car has FSH and isn't due a service for 7k yet. I was aware it went into a garage in November due to 'poor running' (seller told me and i have the reciept in hand). There it had a new MAF and Throttle sensor.
I also found a reciept for a few months back for a 'nocks' sensor, i assume this should say NOx sensor which i have read a faulty one could show these symptoms. But then it has been replaced.
I have no warning lights or other complaints...just the lumpyness and occasional reluctancy to start.
Anyone help at all?
Having just bought it i can't really afford to get it looked at (at least until its a real problem...it does drive fine when actually on the road at the moment).