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Overheating
1999 Toyota Avalon

Overheating

(1999 Toyota Avalon)
I am a second owner of an Avalon with 130,000 miles(70 put on by me) and routinely have check ups/oil changes. The car started overheating on a regular basis after driving 3 hours straight. Over this period i have taken the car to three toyotas and 1 lexus dealership while know one can figure out the source. I have replaced the thermostat, water pump, radiator and continue to have problems except the overheating is ocurring now about 1 hour or sooner. Any suggestions?
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Popular Answer
Unfortunately your car may have a blown head gasket. Have any of the repair shops done a block check test. The engine is got to operating temperature and a chemical is used at the radiator filler neck to check for the presence of carbon monoxide which is byproduct of combustion process and will only be in the cooling system if the head gasket is not sealing properly.
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Unfortunately your car may have a blown head gasket. Have any of the repair shops done a block check test. The engine is got to operating temperature and a chemical is used at the radiator filler neck to check for the presence of carbon monoxide which is byproduct of combustion process and will only be in the cooling system if the head gasket is not sealing properly.
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