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power loss when hot - need expert help please
Posted by POB (more from POB) on Thu, 21 Jun 2012 16:47:58
I have been experiencing a serious loss of power when the engine is hot, to the point where it is dangerous to drive.. Not an issue I had in the past. I have the SID display on so I can check that the IOFF is way high (-150 to -200) even when the intake temperature (Tair) is still pretty low ie 40C; those two items can be seen in SID display mode 7 (#5 and 6).
Most of the sensors are new, the DIC is from 2007 (I tried another one too) , the TD04 turbo has roughly 15K , I tried 2 Air Mass sensors and I can't find any pressure loss in the whole intake (tested per WIS procuedre).

Any idea as to what could be wrong: fuel system, other, has anyone run into the same issue (I remember a post pointing to the brake booster but I don't seem to have an issue braking; I can't get the logic of the b.booster being responsible for power loss only when the engine is hot)

I'd really appreciate any help because as I said, it is quite dangerous to drive due to the super slow acceleration.

Thx

posted by 69.134.33...
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