Cooling System Problems - 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 06-30-2006, 11:05 AM   #11
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Let'* step back a minute

You have coolant loss. How much over what period of time. It'* enough to notice therefore we should be able to help you find it.

Did you recently drain the system or change a thermostat...any work that has been done on the car?

Does the engine run rough as if it'* burning it, any signs of white smoke out the exhaust?

And WELCOME ... we will help you get this one figured out...
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Old 06-30-2006, 11:35 AM   #12
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One thing I noticed, that not too many people seem to point out, just before I had my "incident" involving coolant....

Wild temperature fluctuations. Does your temp gauge stay fairly steady (normal fluctions) or does it go berserk on ya? Much hotter when slow, and way cooler when moving?
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Old 06-30-2006, 02:55 PM   #13
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Quote:
Originally Posted by MOS95B
Much hotter when slow, and way cooler when moving?
I think mine is doing this now. Just changed out the tstat
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Old 06-30-2006, 11:50 PM   #14
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Default Cooling System Problems

I'm losing about half the amount in the tank in about one week. I had my mechanic look at the car which included checking the oil and he found no leaks or evidence of coolant in the oil.
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Old 07-01-2006, 12:25 AM   #15
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I did forget to mention that recently a plastic fitting that goes in to the manifold broke and was replaced. This caused major loss at the time but the mechanic re-filled the system at the time of the repair. I have enjoyed the opportunity to discuss this problem and will return when I return from the holiday. I wish everone a happy 4th.
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Old 07-01-2006, 02:17 AM   #16
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How long ago was that? If quite recent you could have an air pocket in your cooling system. Check out this thread regarding a similar issue, and about 3/4 of the way down the page is a post by Bill Buttermore on how to fill properly and get rid of the trapped air.

http://www.bonnevilleclub.com/forum/...ic.php?t=57335
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Old 07-01-2006, 02:23 AM   #17
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The plastic fitting for clarification is the coolant outlet. Found on the waterpump end of the motor in the intake manifold with a hose running from it to the water pump.

Happened to be my first problem ever enountered with a B'ville. The plastic rots and wears over time. Most replacements are metal tubes and never have any more problems.

Did you end up overheating when you lost the coolant?
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Old 07-01-2006, 07:35 AM   #18
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Yes it did overheat when it lost the coolant.
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