coolant leak - 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 02-10-2005, 05:53 PM   #11
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i did the engine brite and ran it, the coolant is defintiely leaking, but it doesnt seem to be from where it thought it was, that area stayed clean, where else could coolant leak from and get onto the belts?
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Old 02-10-2005, 06:04 PM   #12
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Is it still on the passenger side? The only thing I can think of are the bypass fitting, waterpump, or maybe the lower rad house.
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Old 02-10-2005, 06:16 PM   #13
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Unless there is a difference in the coolant system from the SSEi to the Series II normally aspirated, there are several other things to check. Besides that bypass fitting, there are the heater hoses and their fittings (sealed with 0-rings) into the idler assembly on that side. And there is an o-ring that seals the passage from the water pump to the idler assembly. And as 1993 SLE suggested, the water pump. You might try using a mechanic'* mirror and watching the area directly under the water pump with the engine running. (Be careful not to get caught in the belt!) When the water pump bearing wears, the shaft seal is the next thing to go, and the coolant drips out a hole underneath where the shaft goes into the pump. Try this: with the engine off, grab hold of the water pump pulley and try to rock it back and forth. It should not wiggle. If it does move any way but round and round, that is probably your problem. Or soon will be.
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Old 02-12-2005, 02:01 PM   #14
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Just in case anybody wanted some closure, it was the waterpump, my mechanic also replace dmy belts free, and now i'm going engine brite it onces more to get the off the gunk that accumulated while finding the leak, my engine is now running flawlessly and the only repairs left to do to my car are new rear left window motor, new antenna, and new front right corner light.
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Old 02-12-2005, 09:12 PM   #15
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Thanks NERV, for letting us know. Glad to see you are happily motoring again!
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