Thermostat housing tips? - 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 06-07-2006, 06:17 PM   #1
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Default Thermostat housing tips?

Any tips on getting the thermostat housing bolts loose? I am having a hell of a time loosening them They dont look rusty, just are stuck.
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Old 06-07-2006, 07:09 PM   #2
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They can be pretty tight due to the heat, use some penetrating oil to loosen the threads or get a long pipe as an extension for your socket wrench.
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Old 06-07-2006, 07:39 PM   #3
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You may want to try SLIGHTLY pre-warming the engine.
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Old 06-07-2006, 08:21 PM   #4
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PB Blaster is a good penetrant.
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Old 06-07-2006, 10:10 PM   #5
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Already got them off sorry I didnt respond.
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Old 06-08-2006, 08:15 AM   #6
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Another cool trick for the future is to put the correct socket and extenson on and firmly tap the end of the extension sending a fused metal breaking hit thought it all.
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Old 06-08-2006, 11:00 AM   #7
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Got the t-stat replaced. Absolutely NO difference. Still Idles one past the 200 mark.
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Old 06-08-2006, 11:13 AM   #8
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Should I just flush out the system? It sits at the exact same place on the gauge it did before and the fans kick on, but not very fast, must be low speed.
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Old 06-08-2006, 11:21 AM   #9
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Quote:
Originally Posted by Bonneville94V688
Got the t-stat replaced. Absolutely NO difference. Still Idles one past the 200 mark.
Hmmm seems like someone told you this more than once yesterday.
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Old 06-08-2006, 11:25 AM   #10
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Oops. I just read it and it did make a difference. It does run way cooler driving, and sits one past the 200 mark at idle. It was higher than that before, it was actually a little past the second before. Im gonna go drive it and see what it does.
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