P0102 code and idle bounces from 500-900ish. New MAF and IAT. Ohmed the 3 MAF wires all the way to ecu pinouts (ignition, maf signal, & ground) -- perfect continuity with hardly any resistance. Assuming at this point its an ECM issue?? Thanks
It is not an ECM/PCM problem.
P0102 - Mass or Volume Air Flow Circuit Low Input
Possible causes- Faulty mass air flow sensor
- Dirty mass air flow sensor
- Dirty air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor electrical circuit poor connection
- Intake air leaks Tech notes Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor
SOURCE: 99 Grand Prix idles funny, dies got code p0102,
this vehicle most likely has a mass air flow sensor it may have got accidently unplugged or the air tube from mass airflow to engine is not connected well or it could be that you have indeed a bad mass air flow sensor they do make a special cleaner that you may want to try before purchasing a mass air flow sensor or purchasing one from salvage yard the symptoms you describe would be created by a bad massair flowsensor
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Should also add I have tested all fuses. Also, on the OBD scanner, it states that the ECM had NO reading of data from the MAF.
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Fuses?? Do a pin out test of the MAF wires to the PCM.
I really doubt the PCM is the problem.
READ THE POSTING!!! I ALREADY TESTED WIRES FROM MAF TO PCM AND ALL FUSES!
No more help for you.
haha ok. well if you would have READ what I posted first, it would have saved both of our time and frustration
I have exactly the same problem. Replaced the maf sensor, and still don't get any data from the maf , did you figure out the problem? Was it the ECM ? I need help (info) please
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