low coolant - 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 12-17-2004, 05:21 PM   #1
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My low coolent light keeps coming on, but my coolant is not low. Is there a senser for the coolant.
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Old 12-17-2004, 05:23 PM   #2
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yup, it'* in the passenger side tank of the rad.
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Old 12-17-2004, 07:10 PM   #3
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Can cleaning the electrical contacts or something else simple be done to remedy this? Mine does the same thing.
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Old 12-17-2004, 08:22 PM   #4
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same problem here
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Old 12-17-2004, 08:31 PM   #5
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Quote:
Originally Posted by randman1
Can cleaning the electrical contacts or something else simple be done to remedy this? Mine does the same thing.
Since it one of those variable resistor type things, I'd bet so. Cross your fingers and hope?
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Old 12-17-2004, 09:08 PM   #6
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My problem was my old, crappy coolant gummed up the sensor, and it always said I had coolant, when I didn't, but it also said I had coolant when I had some. A good cleaning is a very good chance it will fix your problem, otherwise it probably is a problem with the wiring.


-justin
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Old 12-17-2004, 11:25 PM   #7
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I pulled the one out in my "92 SSEi, and cleaned the tip that is exposed to the coolant. It worked OK for a while, then started sending false low coolant signals again. I finally just unplugged it. No more warnings, false or otherwise.
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Old 12-18-2004, 01:16 AM   #8
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You'd think you could get a replacement sensor somewhere. Can't be too expensive, can it?
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Old 12-18-2004, 11:18 AM   #9
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If it were just a sensor it probably would be cheap, but it is a Module with three wires feeding it and probably a 10 cent chip in it. When I priced it at O'Reilly, I think it was over $40! I might consider replacing it if I could get one for $15 or $20, but more than that isn't worth it. I check my coolant every time I open the hood, and the radiator when I change the oil, and the temperature gauge constantly.
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Old 12-18-2004, 03:36 PM   #10
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Default sensors

My check oil level light does the same thing.
Who needs these sensors anyway?
I always check under my hood. They are trying to idiot proof tooo much on cars today.
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