Engine revving on its own? - 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 05-23-2010, 09:50 AM   #21
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I suggest removing the throttle body and clean everything up real good.
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Old 05-23-2010, 10:45 AM   #22
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Is there a how to or steps for that?
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Old 05-23-2010, 10:46 AM   #23
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I don't believe I ever made one up. But you just unplug the 3 plugs, disconnect the 2 cables, remove the 3 nuts, and it comes right off. Remove the sensors and then clean everything up.
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Old 05-23-2010, 10:55 AM   #24
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Alright, went out there to look around again(have about an hour before I have an important meeting to limp to), and there'* a hose that connects right below the IAC. It'* been taped up, but it'* obvious the connector part has a crack in it. The tape seems tight, but a crack is a crack right? The rest of the hose isn't cracked.

vacuum leak?
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Old 05-23-2010, 11:25 AM   #25
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That would be a MAJOR vacuum leak. Replace that and see if that helps.
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Old 05-24-2010, 01:19 AM   #26
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Went to look at it again and another part of it completely crumbled.

Superglued and taped it up like crazy to get me through the day.
Is that piece called anything specific in case the junkyard doesn't have a good looking one and I have to order it from the store? I'll take a picture of it if necessary.
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Old 05-24-2010, 01:21 AM   #27
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You should be able to just use a generic vacuum hose and replace it.
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Old 05-24-2010, 01:43 AM   #28
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Cool!

My iac valve has two scres holding it to the throttle body. (duh)
One of them is totally mangled. No edges for any screwdriver to use to unscrew it. How do I get it off?
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Old 05-24-2010, 07:50 AM   #29
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Take the good screw out, grind the bad screw head off, then remove the IAC and use Vicegrips to twist out the headless screw. That'* the best way I can think of getting it out. Those screws might be too small to use Easyouts on.
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Old 05-24-2010, 09:38 AM   #30
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On that dead rubber piece. Is that the one with only one hose attached or the one that splits into a T?
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