Question about misfires - 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 03-27-2007, 03:10 AM   #1
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Other than checking your spark plugs is there another way to find out if your car has a misfire?
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Old 03-27-2007, 03:12 AM   #2
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Old 03-27-2007, 03:16 AM   #3
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Agree - your light will flash a misfire code if you jump wire the connector, I believe.
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Old 03-27-2007, 03:19 AM   #4
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What is your car doing or not doing?
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Old 03-27-2007, 03:42 AM   #5
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its runn alright until I do my tune-up. I was just trying to narrow down my problems about why my converter went bad and so far I concluded that its the old o2 sensor. And Im finna get my exhaust done so I don't want the converter to go bad again.
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Old 03-27-2007, 03:53 AM   #6
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I would think that your plugs will tell a story. Oil fouled, burnt white stuff, etc. Usually there is a color page in a repair book giving you the diagnosis of plug conditions. Kinda odd your cat went bad - to me at least.
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Old 03-27-2007, 08:21 AM   #7
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OBD1 will NOT log misfires folks. That'* 94 and newer.
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Old 03-27-2007, 08:22 AM   #8
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If the car ran fine until you did the tune up, review all the items you did. Check all the connections and plugs. It is possible one is cracked and causing the problem.
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Old 03-27-2007, 10:51 PM   #9
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willwren, I do believe ya got me.
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Old 03-27-2007, 11:01 PM   #10
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for me my car would start to shake (not violently), usually when I would be sitting at a light, also your exhaust pipe will be making a put-put sound, my car was in need of new spark plugs badly
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