Originally Posted by
Cossie Phil
No Problem
FYI, charge temp when talking Autronic ECU's is a programable cross between inlet air temp(sensor in plenum) and coolant temp(head temp). It is used to estimate the amount of heatsoak from the head into the inlet charge under varying rpm and load conditions. I dont think this will have anything to do with the fault codes recorded.
Cheers,
Phil.
Exactly this, at low rpm and low load it places more bias on the coolant temp sender and at higher rpm and higher load it places more bias on the air temp sender, as it knows that at lower gas speeds you get more time for heatsoak, if you do a datalog you can really see this working, its quite a clever algorythm IME.