High running temps!!! - 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 09-18-2003, 12:19 AM   #1
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Default High running temps!!!

Ok, whenever my car is running the fans only kick on if I have the air on, or, if I have the air off, they will kick on at about 220 degrees. The thing that I am worried about though is on hot days, 80+ degrees out, the engine seems to come close to 240 degrees sometimes even with the fans at full blast and highway driving and won't cool down until I turn the car off and let it sit for a while then start it again and it is fine for some more driving then gets hot again. I had the 195 degree thermostat in there and someone on the site told me to put in the 180, but it didn't seem to help, still running hot! Any ideas? Thanks in advance!
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Old 09-18-2003, 12:26 AM   #2
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you can re-wire your cooling fans. there was a really good post about it earlier but i couldnt find it. this one will work 2 though http://bonnevilleclub.com/forum/viewtopic.php?t=7566
also you can PM fuddyduddy121 and he can tell ya how.
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Old 09-18-2003, 12:54 AM   #3
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Go through the usual diagnostics first.

How many miles are on the existing coolant? Check the condenser/radiator for clogs with dirt/junk/restrictions.
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