Quote:
Originally Posted by KarTek
Those cars have so many sensors that it's hard to imagine a problem that would not be flagged by one of them.
Just speculating, I would say look at the VGT actuator and possible cat flow problems. Just a "gut" feeling, I know nothing of these...
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I agree. Lot of sensor. We got the car with a limp mode and went from there to fix it.
We did the sensor at back of fuel rail. We had issue with the HP pump where a internal valve did not return fuel properly to fuel tank.
We replaced the MAF sensor. We also replaced the LP pump in fuel tank and fuel sender unit.
A lot of work has gone into her. Right now runs great, no codes yet low on power.
So I am coming back to the cat converter issue. While at the shop few months ago. We did disconnect the exhaust just AFT of the turbo. Thus running it without the primary or secondary Cats..
The mistake we did perhaps was the way we tested it. Only went on a short run outside of shop. Did not notice a great difference so we bolted everything right up.
Seems like I shall revisit the CAts again.