Engine miss, and bad fuel economy - 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 02-01-2010, 01:45 PM   #1
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Default Engine miss, and bad fuel economy

I have a 95 SSE, and it has a bad miss in it. I put a new computer in May of 2009, an EGR Valve in June 09, and a Fuel pump in Sept. It ran fine for about three months then it started the miss. I pulled injector wires while it was running and found no change in miss when pulling off number one. It has power to it, but would not fire, put in new injector and did not change. any suggestions would be helpful. Thank you

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Old 02-01-2010, 01:54 PM   #2
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The injectors always have power. The ground is what is toggled to make them work. I would check the plug, plug wire and coil pack for starters
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Old 02-01-2010, 01:55 PM   #3
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Do a check on your spark plugs/wires/coil packs. This is a writeup on checking the coils and spark plug wires To check the plugs, I would pull one or all of the front three plugs and check for any signs of damage or anything out of the ordinary.
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