I SCANNED THE CODES ON MY CAR MYSELF..NEED HELP NOW - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-04-2003, 11:21 PM   #1
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Default I SCANNED THE CODES ON MY CAR MYSELF..NEED HELP NOW

Okay so i recored how many times the SES light flashed, it did its diagnostic test 3
times then follwed by the code. SES flashed 3 times, paused then flashed 4 times.
it repeated this 3 times, then it flashed the diagnotic code 3 times then repeated the same error code as above. What does SES flashing 3 times pause then 4 times mean? Does that mean code 34: MAF sensor-voltage too low ?
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Old 09-04-2003, 11:57 PM   #2
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Are you having driveability problems? The code means that the PCM is not getting the MAF signal.
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Old 09-05-2003, 12:32 AM   #3
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It doesnt idel evenly, and gets poor mileag like around 185 miles per full tank...
And when its in park if i rev it up to around 2000 rpm it starts to miss fire really loudly , then when i release the gas peadle it back fires
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Old 09-05-2003, 12:33 AM   #4
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There ya go. Check the wiring first. Make sure the sensor is plugged in. From there it'* PROBABLY a Maf sensor.
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Old 09-05-2003, 12:34 AM   #5
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How much American or Canadian should i expect to pay for a new MAF, and if i buy one how do i install it
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Old 09-05-2003, 12:45 AM   #6
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The Maf is in the Throttle body. It'* the little black square plate just above the TPS. Should be 3 screws. The last I heard they were about 80 bucks Yankee.
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Old 09-05-2003, 12:55 AM   #7
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thanks alot! im gunna buy one tomorrow
It think this should help my backfire/un even ideling/poor gas mileage since it plays a huge role in fuel delivery.
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Old 09-05-2003, 01:09 AM   #8
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so that is a code 34 then right 3 flashes pause then 4 flashes
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Old 09-05-2003, 01:17 AM   #9
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12 three times, the 3 pause 4 three times, then 12 three times, repeat. Code 12 handshake, code 34. Matches your symptoms. Sounds good to me. Still could be a wire or PCM, but not likely.
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Old 09-05-2003, 01:20 AM   #10
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i unhooked the MAF then started the car SES stayed on it and stuggled to run. I hooked it up fired it up it ran better..not evenly and the ses went out. So i dont think its wiring.
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