Tdi Cut Out & Hesitation Under Acceleration

[dlivadas]

Hi

 

Recently replaced the MAF with a new after market unit one on the internet and it certainly did make a massive difference to the power.

 

BUT, it now won't idle when cold and when it does manage to stay alive seems to be sort of hunting i.e. the revs drop suddenly and then it recovers and then goes in this cycle until warmer. It also stalls pretty easily when cold. This pretty much goes away when warm. Then, it will hesitate under acceleration unless I floor the pedal.

 

I took it into a shop I know and they came back saying something about the dual mass flywheel and some sensor down there and was told that it just isn't worth doing until the clutch goes???? The car has always been a little rough on the tick over so he may be onto something but what baffles me though is why it only exibits this behavior with the new MAF connected. It does not cut out without the MAF connected.

 

Could it be a dodgy MAF?

 

Also, it smokes like a chimney under some acceleration, actually under almost all conditions.

 

Any help would be appreciated.