Coils replaced and O2 too, but still having probs - Page 3 - 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 11-19-2004, 07:56 AM   #21
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Well I appreciate all the help you guys have given. If I was to have some great find and figured some complicated problem out all by myself I would be sure to come on here and let everyone know and be very proud of myself.

Conversely, if I was to do some bonehead screw-up, I would make sure to give it equal time. So I went home to check out my plugs and wires, and discovered that I had the #2 and #6 plug wire swapped on the coils. I switched them back and LO AND BEHOLD, SHE RUNS JUST FINE NOW!!! What a dope!

So that being said, I still have a Check engine light on for something, and she doesn't run as smoothly in park as I would expect. But as far as driving, she runs smooth, accelleration is back to where I would expect, and I like driving it again!!! As far as the check engine light goes, I know that my oil pressure sesnor is broke, I broke it while installing the engine and have never gotten around to replacing it, would that make the light come on? I would assume it would, but the sensor went bad on the old engine and I don't recall the light coming on then.

So basically she runs fine, but the light is still on and will bother me, but at least she'* fun to drive again!!
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Old 11-19-2004, 10:53 AM   #22
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Your rough idle may be due to possible fouled plugs (2 and 6) from the oopsie. Kudos for admitting the bonehead I've done stupid stuff before, but I won't post it.

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Old 11-19-2004, 11:47 AM   #23
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Yes, the Oil Pressure Sending Unit will set off a code. Even my '89 set off an SES light when I had a bad ground to it, a while back.

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