Car sputtering - Page 2 - 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 04-20-2008, 09:51 PM   #11
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Good to know, it isnt going anywhere until I can get it in. I will check the coils when I pull the spark plugs. Thanks for the tips!!
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Old 04-23-2008, 10:22 PM   #12
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Ok, I got ahold of a scan tool and checked for codes. It couldn't find any but it did register that the CEL was on. The car seems to have good days (like today) where the sputtering is not too bad and bad days (where I don't think I will make it home). Interesting.....

Also, 1/2 way through the scan, the heater came on. It'* display showed 3 lines "---" and I could not turn it off.

Any opinions?

Tomorrow, I will tackle the multimeter and spark plugs and report back
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Old 04-23-2008, 11:34 PM   #13
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Start the car & turn off the electronic climate control. Turn off car.
Now disconnect the battery cables, Remove the bolts & rubber boots from the cable ends. Clean both sides of the all cable ends & the spacer between the positive cables. Coat everything with dielectric grease & reassemble. Let us know what the cables looked like & if it'* running any better.
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Old 04-24-2008, 09:41 AM   #14
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When was the last time the plug wires were changed or inspected?
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Old 04-24-2008, 12:16 PM   #15
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X2 on the battery cables. Sounds like a bad connection.
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Old 04-28-2008, 09:15 PM   #16
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Ok I finally had time to get to the repairs. Turns out the plugs were nasty!! The one out of #3 was so far gone it wasn't firing at all. So I swapped out the plugs and wires. I was in there anyway, so it got new air, fuel and oil filters (with new oil of course), tightened up the battery cables and tested the coils. She is as good as new now.

Thanks to all for the help in locating the problem! You guys are great!!
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