Yay! fixed the misfire problem - 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 02-15-2009, 07:17 PM   #1
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Default Yay! fixed the misfire problem

Had a random misfire since i got the car... cant believe the hours i went through trying to figure this out... Started from changing the Ignition coils and ignition module... plugs/wires... etc
It was the damn MAF sensor the whole time!
i picked one up from the car yard off an oldmobile and voila!! no more stuttering or kicking/bucking .
Hope to help out other suckers having similar problems
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Old 02-15-2009, 07:20 PM   #2
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Did you ever try unplugging the MAF and driving without it? Glad you found a easy fix.
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Old 02-15-2009, 07:30 PM   #3
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no i found out it was the MAF because usually it would work and sometimes not. So i pulled over one time, shut the motor off, tapped the MAF. Restarted her and fired her up without any problems. That when i found out it was the sensor the whole time.
And yes i tried unplugging it, ran the same, tapped it , plugged it in and Paa! worked.. odd so i replaced it.

It could of been an expensive fix too, lucky i got it from one of my buddies @ the car yard. This thing runs around $200-$500 new.

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Old 02-15-2009, 07:34 PM   #4
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Sounds like a bad wire or cold solder joint. You can find the whole throttle body with all sensors on it for less then that on Ebay.
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Old 02-15-2009, 10:55 PM   #5
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yea it was bad solder because the socket housing could be pulled out 1/8 to 1/4 way out from the MAF
a quick tap usually was a temporary fix

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Old 02-16-2009, 07:49 AM   #6
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So you found you had bad wires going to the MAF?

Did you fix/replace them?
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Old 02-16-2009, 12:46 PM   #7
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not the wires the female socket of the MAF was cracked so it would come out when you pull on it, the wires were fine
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