92 starts to break 200 degrees during highway accell. scared - Page 2 - 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 08-26-2004, 02:05 PM   #11
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Do you have the AC on while accelerating?
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Old 08-26-2004, 11:13 PM   #12
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Quote:
Originally Posted by willwren
Max, where do you live? Put your location in your profile. We may have someone nearby that can help.
I'm on vacation in RI, but if you come on down to Newport, you could be on vacation too!!!

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Check your radiator, especially the bottom half. Any crud built up in there? Check it at night with a light on the other side. Does your coolant look like the right color? Clean? Overflow tank filled to the correct level, coolant level right? After checking all that, remove the pressure cap from the rad, and start the car. After it reaches about 200, does the coolant in the radiator start to flow? Does the upper hose get hot when this happens? This is an indication that the stat is opening correctly. Does the water pump spin freely by hand when the belt is off?

There'* alot of stuff to check. But it'* pretty easy to narrow down if you do it methodically. The 92'* will tend to run hotter (except the SSEi or SC SSE) because you don't have an EGR valve. Switching to a 180 is a good idea, but I'd try to narrow it down first.

I'm betting if you flushed out the spaces in the radiator (from the outside), have the cooling system flushed, and switch to a 180, you'd see an overall improvement.
What he said!

It could be something real simple like some air bubble got trapped in your system when the coolant ran low and that could cause that yo-yo effect on your temp. I would replace the thermostat and, if it'* been awhile, flush out the old coolant and put in the new.
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Old 08-27-2004, 12:11 AM   #13
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What HE said!

It'* almost never one cause. It'* a combination. Go after the whole ball of wax, and you'll get it.
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Old 08-27-2004, 01:11 PM   #14
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i would like to replace the t stat to a 180 anyways. id also like to flush the coolant becuase i know it hasnt been done since my dad got the car like 4 years ago. my apartment doesnt have a hose though. will i be able to find the steps for these procedures in techinfo or somewhere else?
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