Fuel and Engines
Heating AC and Engine Cooling
Chevy Impala

What causes any engine to run hot?


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Wiki User
2011-09-13 22:22:05
2011-09-13 22:22:05

a bad thermostat is one cause , second the water pump may be defective, and last you may have a engine block problem , first change the thermo stat and put in a new gasket with the thermo stat , but also , if this doesnt work check the little sending unit in side of engine block on the side of engine for it could be sending fake readings to your temp unit in dash board , if you install a new sending unit and a thermo stat and gasket , then the sending unit in dashboard is bad , providing your water pump is working !


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There are several possible causes for an engine to run hot. It could be low on coolant. The thermostat could be stuck closed. The engine cooling fan is not coming on. There is a blockage in the water jacket, or a problem with the water pump. It could also be a combination of those problems.

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