MAF sensor code
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MAF sensor code
Sorry is this is answered somewhere else but my 1985 Iroc is throwing a MAF sensor code. We have back probed the sensor and it’s showing 0.5, 0.6 on a voltmeter at idle. Am I checking this correctly or do I need to do something else? Any idea why it would still be throwing this code?
Joined: Dec 2004
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: MAF sensor code
B11 at ecm or pin C at maf ? Do you have a scanner to see gps . I don’t have a fsm for 85 but I think it should be .80 in that range. No fsm ?
Joined: Dec 2004
Posts: 16,813
Likes: 1,009
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: MAF sensor code
Are you using a gm helm service manual for troubleshooting?
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Re: MAF sensor code
This is what the analog MAF output voltage is for an '86 305:
If the idle RPM is changed, the intake air mass will change, so that piece of information is critical to determine if your reading is relevant.
500-600mV could indicate a very low idle RPM, a lazy or under-reporting sensor, or unmetered air entering the engine (leaks) somewhere in the system.
If the idle RPM is changed, the intake air mass will change, so that piece of information is critical to determine if your reading is relevant.
500-600mV could indicate a very low idle RPM, a lazy or under-reporting sensor, or unmetered air entering the engine (leaks) somewhere in the system.
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