I thought it was the crank sensor, but before I start on that, is there any other likely suspect to check?
Basically my perfect running car suddenly developed a back fire at WOT and the idle also went to crap. Ideas welcome as i have to fix this myself
Wendy, when you say 'havoc', what were the symptoms?
My car runs fine in mid range, but not idle or WOT.
I fixed the idle by finding a ground that had come lose (thre grounds on one bolt on the passenger inner wing) and replacing the PCV/Check valve/vac hose plus retightening the uppipe connections. That bought it into line.
The MAF numbers do appear to be correct, although its dificult to check now as I dont want to push the car if it is malfunctioning.
It feels like the 'plug' is being pulled form the car and yet returnns instantly once I get off the throttle. TPS is correctly set too.