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Well, I think we should take whatever information the ECM can give us to help us diagnose this stalling poblem; for example, we know misfires are about the worst thing that can happen, that's why the ECM will flag a corresponding code whenever it sees a misfire. Do you happen to know what that code or codes are?
Thank you for that extra bit of information. Now, bear with me as I share my thought process on what could be happening; the ECM knows there is a misfire based on signals it gets from the crank sensor that tell it crank speed slowed down as a particular cylinder was firing. So what if the crank sensor was going bad and was no longer providing reliable information to the ECM? Could that be the reason why there are no current misfire codes?
Well, if on top of what I just stated, we add the fact that bad crank sensors are all too common on these vehicles, makes me think that's probably what we're dealing with. Why don't we give a new crank sensor a try and see what happens? Just make sure you get a good new part that comes with a felt or paper spacer and that you follow the install instructions in the box to the letter - no over tightening!
Please let me know how it runs afterwards.
That's certainly what a bad sensor will do. It can drive you crazy because it's the computer's only source for those signals since there's no other sensor to compare crank speed or position.
Well, all I can say at this point is that I'm rooting for you. Go for it!
Is there any chance of you borrowing a scan tool capable of reading engine data so we can look at all the engine parameter id's when the engine is getting ready to stall? I mean, other than that, I'm just about out of options.
Please let me know.