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Why does my low coolant light keep coming on?

Low coolant light keeps coming on. Coolant is full. Engine runs @ normal temp. Hose unit been replaced. Help!?

  • My low coolant light keeps coming on but the coolant has been checked and it is full. My engine does not overheat. It runs at normal temp. The heater and a/c work perfectly. I was ...show more

  • Answer:

    that's caused by a bad sensor in the coolant reservoir that tells the computer its low on coolant,this is easily replaced and isn't very expensive either,most people ignore it ,but i think its a real good idea to keep the system working really good ,just in case it really does get low,it will keep you from ruining a good engine by running it hot,some of these sensors are also located around the thermostat housing,good luck with it.

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I am having the same problem with my moms piece of sh*t Chevy Lumina. I have taken it to a professional and they told me that a (dirty word in my house) sensor on the radiator is bad. This sensor costs $75.00. It can stay that way as far as I'm comcerned. I'm going to pull the light on the dash and see if the gauge still works. That way I won't have a problem with the Dept of Trans. Vehicle Inspection.

max

It could be a temperature senser or a problem with the brain.

williamrmsy

ok well in modern cars the thermostat housing that takes the temperature of your coolant sits at the top of its housing. when coolant levels fluctuate or if you are still too low on coolant the thermostat is not touching the coolant meaning it cannot take the temp meaning your computer thinks your low on coolant or overheating even if your engine is at normal operating temp or at a good coolant level. hope this helps

SIDEBURNS

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