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.

P301 code.

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Old 03-12-2008, 11:25 AM
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Default P301 code.

Hey guys, mark here. Can you tell me which cylinder is #1. Changed plugs & wires but still have random missfire detected in #1 cyl.
Old 03-12-2008, 11:44 AM
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when facing the car, it is the front left
Old 03-12-2008, 11:45 AM
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Hi Mark - Standing in front of the car looking at motor, it'* the front left cylinder.
Old 03-12-2008, 12:19 PM
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Yup. Easier reference.....shortest plug wire. Closest to the coil packs. Make sure that wire isn't kinked in the factory retainer. It'* under a bit of stress there. Or shorting out to anything metal (although the dipstick tube is usually the biggest suspect for that, it can't be in your case).
Old 03-12-2008, 02:42 PM
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Thanks guys, the brand new coil to #1 cyl. was bad. Replaced it with different one and all is good again. Cant wait to start new mods on my 97SSE.
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