1992 Bonneville SSE running horrible after Seafoam - Page 4 - 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, 12:33 PM   #31
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is there something that can fail in the tb or intake that can cause these symptoms?
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Old 02-24-2005, 01:11 PM   #32
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Quote:
Originally Posted by jr's3800
Quote:
Originally Posted by montess1986
is there something that can fail in the tb or intake that can cause these symptoms?
Possibly MAF or TPS... But I'm almost doubtful that either one of these is bad...

All I can say is that you need to know what the PCM is seeing and doing before going any further... Unless you have parts to throw at it..
How about the Idle Air Control ( IAC ) valve? If that got gummed up with carbon and isn't working correctly it can cause these problems as well.
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Old 02-24-2005, 01:22 PM   #33
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Anyone on here on long island with a scantool, or an otc pathfinder chip I can use with my otc2000 to diag this thing?
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Old 02-24-2005, 03:28 PM   #34
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No more ideas? I'm looking for any idea, even the most rediculous.
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Old 02-24-2005, 04:15 PM   #35
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Saturday, I am going to drop the cat out to see what that does. Anyone think I may have fouled the IAC? 60 bucks at otter zone, maf is 120, I hate just throwing parts at a problem
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Old 02-24-2005, 06:45 PM   #36
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Wonder how many lawsuits Seafoam has filed against them for bent rods and cracked pistons?
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Old 02-24-2005, 06:46 PM   #37
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Quote:
Originally Posted by ron350
Wonder how many lawsuits Seafoam has filed against them for bent rods and cracked pistons?
Started thinking simmilar... If this is done wrong the damage can be severe..

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Old 02-24-2005, 07:03 PM   #38
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I doubt they have any. If you do it wrong (very thorough instructions are easily available), how is it thier fault?

SeaFoam has been around and in use loner than any of us. I remember my dad using it when I was little....
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Old 02-24-2005, 07:25 PM   #39
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What about the suggestion for the cat? Maybe that does need changing
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Old 02-24-2005, 08:47 PM   #40
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Quote:
Originally Posted by ssesc93
What about the suggestion for the cat? Maybe that does need changing
Running seafoam breaks off all the carbon, and it has to go somewhere. It may have clogged the cat up...
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