1992 Bonneville SSE running horrible after Seafoam - 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 02-24-2005, 01:24 AM   #21
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will do in the am, if the maf did somehow magically go bad from seafoam,going into a vaccum line, it would be a modern miracle, not to mention the ungodly things I will be doing to the seafoam that is left
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Old 02-24-2005, 08:53 AM   #22
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Tapped on the maf, no change at all.
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Old 02-24-2005, 09:21 AM   #23
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Did you try putting the original coil pack back in? Bring everything back to the way it was (minus the seafoam and plugs!) and see what happens.

Double check all your wires and connections.
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Old 02-24-2005, 09:30 AM   #24
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It sounds like you have a vacuum leak. Make sure to check all vacuum connections especially the hose you disconnected. Listen for any hisses that would suggest a vacuum leak. The sea foam should not have damaged anything. One other thing I would check is maybe the PCV valve.
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Old 02-24-2005, 09:30 AM   #25
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ok, I unplugged the MAF and the car seemed to run no different. Only change was that of course the SES light came on. DIdnt check the code, but I have to assume it is for the maf since it went away soon as I reconnected it. I am at work, and the original coil is at home. I checked my firing order and connections and all seem fine.
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Old 02-24-2005, 09:50 AM   #26
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Disconnected the MAF and nothing changed? That seems suspect.
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Old 02-24-2005, 09:53 AM   #27
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Only thing to note, when I plugged the MAF back in with the car idling, it stalled.
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Old 02-24-2005, 10:56 AM   #28
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I also inspected all the vaccum lines and cannot find a leak, nor do I hear a hiss
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Old 02-24-2005, 11:24 AM   #29
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The fact that it ran really nice for five minutes may be of help in the diagnosis. What were the conditions when it was running OK? Was the engine cold, or hot? Has it run smoothly again?
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Old 02-24-2005, 11:26 AM   #30
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It was cold id, about 40 degrees out, and the engine was cold. and no, it has not run smooth since.
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