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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.

Fluctuating Temperatures

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Old 04-22-2005, 09:28 PM
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Originally Posted by Logan
I forgot to mention this very important detail. Everytime that it has happened, I was going down the road at 55-60 MPH. I don't think I should need the fan at that speed
That IS a very important detail. If your coolant level is OK, that does point to a sticking thermostat, 'cuz the radiator should be getting plenty cool at those speeds.
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Old 04-23-2005, 07:44 PM
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Could have a bubble of air in the system. My old car did something like that. It was better after I bled the cooling system.
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