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FIXED: Stuttering at 3k RPM.. has anyone figured this out? --- VIDEO INSIDE
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Originally posted by Nairb View PostDoesn't really start hard when initially starting.. probably revs to like 2k and then falls.. no CEL at all and no codes thrown during a stomp test.
IMMAJACKUP.. no idea what exhaust setup it is.. PO put it on.
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Ok so.. still have not been able to figure this out unfortunately. The car is now hitting a wall at 5k hot or cold.
I replaced the AFM, tried a new DME with stock chip (thanks Ryann) and also checked the connection for my o2 sensor.
I have not replaced my crank position sensor.. maybe that could be the culprit?
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Originally posted by Nairb View PostOk so.. still have not been able to figure this out unfortunately. The car is now hitting a wall at 5k hot or cold.
I replaced the AFM, tried a new DME with stock chip (thanks Ryann) and also checked the connection for my o2 sensor.
I have not replaced my crank position sensor.. maybe that could be the culprit?
Perhaps the crank sensor is faulty is is making the ECU think to activate the rev limiter. In the video the tacho needle doesn't bounce off at 5000rpm it kinda goes all over the place for a bit. So perhaps at that engine speed the crank sensor isn't able to send a signal that the DME can understand and then the DME freaks out and activates the rev limiter.
That seems to make sense to me.Leo.
E30 318iS, E36 328i
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I just want to say, this is like a fucking curse. Right when the powerband kicks in the engine stutters and you either have to shift or let off the gas.. I want to keep my m42 but my patience is wearing thin.
Any way, thanks for all you peeps trying to help me figure this out. I am definitely going to keep posted.. if anyone has any more suggestions, please feel free to give me some insight!
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Ok, I am having another hunch here.. could it possibly be the fuel pump? I just really don't think it is the crankshaft sensor.. there are no other symptoms, and the car runs BEAUTIFULLY up until 4500-5000 RPM.
Could the fuel pump be dying and not sending enough fuel/maintaining pressure for higher revs?
I have not replaced the fuel pump in this car yet, not sure how old it is.
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