check your cooling fans make sure they are working, to do this start your engine and turn on the ac the cooling fans should be running, if it does the next thing to check is the temp sensors, to do this turn off the ac, while the engine is running keep an eye on your temp gauge if the dial is going up above normal or at the point where you say the engine is running hot check if the cooling fans are running,
1) if
not running, cooling fan sensor is not working, replace
2)if running, thermostat is shut, the thermostat regulates the flow of coolant in the engine it is fully open at normal operating temp and close if coolant is cold, replace
how to replace thermostat go to
https://www.youtube.com/watch?v=dG5MhY8Bieo
The new owner found the final solution to this problem by having the fuel pump replaced.
eng. cooling fan continues to run after engine is off
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