LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

False low coolant light

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Old 09-16-2009, 07:39 AM
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False low coolant light

I have a 94 z-28, and getting a low coolant light coming on while driving.
It is false because my coolant level is at the correct point when I check on the coolant dipstick.

Is there a sensor in the overflow bottle that could be bad?
Any suggestions appreciated.
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Old 09-16-2009, 09:38 AM
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Done a search and found my answer, posted from work, with little time.
The search really is a great feature.
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Old 09-16-2009, 09:39 AM
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The sensor is mounted on the radiator behind the battery. You have to drain the water down to change it.
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Old 09-16-2009, 10:07 AM
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it will probably just go bad again if you replace it, if you unplug it im pretty sure the light goes out, just keep an eye on your fluids
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Old 09-16-2009, 10:24 AM
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I think some ppl have had luck cleaning the element and re installing it. Try that before you go out and buy a new one.
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Old 09-16-2009, 10:40 AM
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http://shbox.com/1/4th_gen_tech2.html#low_coolant_lamp
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