Question about 1987 Chevrolet Nova

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My 1987 Chevy nova is getting overheated when i drive faster than 55 mile an hour. although i just did the hole tune up. and my fans are connected to work directly when i start the engine. i changed the coolant and the motor oil the oil filter but the problem still existing. can any body help me deal with that please?

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Check to see if your thermostat is working correctly by opening the radiator cap when the engine is cool or cold then start the car and see if the coolant is flowing,if it is flowing then your thermostat is stuck open,the water should only start flowing when the thermostat reaches its operating temp.,if its stuck open it could make it over heat this will also let you know if your water pump is working correctly.Also check that your radiator and cooling system is not pluged up someware.Make sure the belts are tight enough as not to let the belt for the water pump pully slip.As a note check to see if your radiator is full before you start the car to do any of the checks,also a good time to check for leaks if the radiator is low,if its full siphon some of the coolant out of it about half an 1 inch from the top should work,to do this just squeeze the top hose a little while cap is off.Doing this is so the coolant wont spill out to much,cause its going to rise after the engine is running.

Posted on May 26, 2011

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