1999 M Coupe stalling with MAF plugged in. P0101

[Drhekmat]

Hey guys, Got a CEL p0101 and issues with car stalling when throttle is applied.
I replaced the maf as it was running fine if maf was unplugged but I am still plagued with the same issue and cel code.

Any ideas of where to look for?



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[BladeRunner919]

It's probably an air leak post-maf allowing unmetered air into the engine. I'd be looking for perished hoses.

[rf900rkw]

The #1 cause of P0101 is people unplugging the MAF in a misguided attempt to diagnose things. Unplugging the MAF verifies the DME's capability of setting a P0101, **NOTHING** else. I agree to start with looking for any leak between the MAF and the engine. Torn intake boot is common, usually on the bottom where you can't see it.

[Drhekmat]

I unplugged it after I got the code. But nonetheless, the code was still present once I switched the maf for a new one.


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[BladeRunner919]

Did you clear the code and it came back, or did you not clear it?

[Curt C]

I know the OP. We found the issue last night. Tear in the elbow after MAF on the underside.

[Drhekmat]

I didn’t clear it, once I took it out though it gave the same code under pending status.

Intake boot was torn. Thank you curt for your help.


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