My 1993 Bonneville SSEI acting up, please help! - 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 10-26-2009, 07:04 PM   #21
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i put new coils in to replace the bad ones. they both read around 8v, and the good old one reads around 5.6v it still sputters, isn't as bad as what it was, should i replace the other coil as well so they're all reading the same?

I did notice on the tps, that the lever on the sensor, isn't on the other side, where the lever that moves when you turn the throttle body, so i'm guessing i need to pull it and adjust it so the lever is on the other side?
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Old 10-26-2009, 07:16 PM   #22
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As for the coils. Ya, you want them to be all about the same.
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Old 10-26-2009, 09:02 PM   #23
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well, i think i'm screwed. been reading different posts. when i changed the oil over the weekend, it was milky, and lots of white sludge around the oil cap, didn't know what that was all about, and i've noticed i've been losing coolant. i just bought it not even a week ago and having these problems, sounds like i'll have to put a new engine in it. i had to drive an hour and a half from where i bought it, plus drove it 60 miles round trip to my sisters house, then driving back and forth to work
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Old 10-26-2009, 09:39 PM   #24
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The engine may not be shot. Don't drive anymore if possible. Get new LIM gaskets, supercharger gasket, and throttle body gasket. I think you will need the coolant O rings, but I'm not sure on the series 1 engines. Change the LIM gaskets and flush the engine with oil. Add some seafoam to help pull any coolant out of the crank case.
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Old 10-26-2009, 10:20 PM   #25
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well, i guess i'll try that. time to switch to the motorcycle for a few days then. how long does a job like that take, changing the gaskets?
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Old 10-26-2009, 10:22 PM   #26
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I've never done a series 1. A series 2 is about a 4 hour job if you take your time.
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Old 10-27-2009, 11:15 AM   #27
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what about head gaskets? should i replace those as well?
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Old 10-27-2009, 11:21 AM   #28
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Head gaskets generally do not go out on these engines. That'* totally up to you.
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Old 10-27-2009, 12:51 PM   #29
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well thats a relief then, lol i was telling my dad about the problem, and he'* under the impression that its probably a bad head gasket or a cracked head. i'll go ahead then and try to get those gaskets and get working on it soon i hope. took friday off so hopefully that can be my project for the day
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Old 10-27-2009, 01:48 PM   #30
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Typically a blown head gasket will leak between two cylinders. Coolant leaking in to the engine mainly comes from a failed LIM. Or a UIM gasket which you don't have. A cracked head, that'* a different story. If you tear down to the LIM gaskets and see no failure, then go deeper.
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