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Why low coolant light wont go off in 2000 chev venture even after topping off coolant with antifreeze?
Wiki User
∙ 15y ago
Although the following answers are correct, they fail to address your question. The LOW COOLANT light is controlled by a sensor in the coolant reservoir, that big plastic jug in your engine compartment. This reservoir has a switch mounted about half way down in it, and if the sensor goes BAD, it will make the "Low Coolant" light go on, no matter how much coolant you put in. You don't say whether or not your coolant level drops after a couple of days of driving, so it's unknown if your car is actually loosing coolant or not. If the level DOES NOT drop after a few days, you can be assured that the switch is bad. Your dealer can fix it by replacing the reservoir. #2 Answer Follows: Mainly because there are other things that help the coolant do its job properly. If the water pump is non functional, it wouldn't matter one iota if you put 300 gallons of antifreeze in the engine ... if there is no water circulation, it isn't going to cool off.
The thermostat also plays an important roll ... if it is stuck closed, the engine will remain hot and never cool down. If it is stuck open, the engine water temperature will be too cool.
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∙ 15y ago
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