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2.5 TDI allroad 2002 AKE (tiptronic) slow acceleration, ppor power
Hi,
changed EGR valve and oil sump filter/separator and now on straight road and downhill everything looks ok (noticed slow delayed response on throttle) but on small hill or bigger hill it revs very hard and going slow up to 3 K rpms and suddenly explodes and goes up to 4 K rpms where he get lots of power.
Also gear change now is on much higher revs.
Problem is more noticable when engine gets hotter.
Tried disconnecting MAF same thing even worse only clouds of black smoke noticed.
ECU doesn't show any error.
Engine in neutral car revs fine, wastegate actuator is lifting and lowering as revs changes.
Old EGR was leaking, didn't hold vacuum, oil was visible.
Did anyone had similar behaviour and some solution.
Ok, found posible cause hose from filter to turbo intake 4B0129627B (picture of hose for illustartion only):
broke at turbo inlet fitting and 50% of pipe failed of. So air was not going through filter, MAF and created enough vacuum for EGR, wastegate operation.
Will fit a new one when I get it and post here did this solved this issue.
Probably due change of oil sump filter/spearator change, movement of hose which goes from this intake hose to sump caused movment which moved enough broken pipe from turbo inlet.
Fitted new pipe but same effect as previous. What I noticed is that when during acceleration I shortly remove foot from throttle and push it again car revs up quickly but again it stalls on some rev .eg. I push throttle car revs up to 2 K rpm shifts gear and then stops reacting to throttle if then I remove foot from throttle and push it again it revs up to 2.5 K rpm and again not revving up any more.
I checked vacuum pipes, check N75 (basic settings group 011) it moves waste gate valve up and down.
Do somebody have similar experience and what to look next?
solved, issue is faulty EGR, new one leaking on intake side so turbo could not build up pressure. Test was performed by blanking intake side from intake to of EGR after that engine got all the power and again works like a beast.
07-20-2016, 12:15 AM
2.5 TDI allroad 2002 AKE (tiptronic) slow acceleration, ppor power
