Cleaned the TB today! - 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 08-16-2007, 11:09 PM   #1
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Default Cleaned the TB today!

WOW was that thing dirty!

I actually had to use a batery brush to get the carbon off the back of the butterfly and the back of the housing.

My concern is that there was a ton of black tar-like stuff all inside the opening of the Intake Manifold. How do I clean that stuff off? Or should I just get a new one and replace it and the LIM/UIM gaskets at the same time?

Oh and I could tell there is a big differance in throttle responce and it idles a bit better too.
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Old 08-16-2007, 11:17 PM   #2
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No point touching the UIM to remove that gunk, unless of course your UIM has never been replaced. You know about the common failure of that part correct? How many miles are on the car?


http://www.bonnevilleclub.com/forum/...e=article&k=38
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Old 08-17-2007, 11:52 AM   #3
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Overall..You don't clean the upper manifold. Although being NA'd you could spray TB cleaner into the TB with the car running to clean some of it up. SC'd should not do this...
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