Question about 1997 Oldsmobile Aurora
My 1997 Oldsmobile Aurora is overheating and a blown head gasket has been ruled out, yet it stills overheats. A new thermostat has been put in but to no avail. Don't want to waist anymore money without pinpointing the problem.
Do the fan(s) come on when hot? Blow out the radiator core with compressed air (from the engine side) to clear it of bugs and other debris. Make sure the radiator is full to the top (when cold) and check the radiator cap seal rubber and the over-flow tank and tubing for leakage. It's possible that the water pump impeller is slipping on it's shaft and not pumping water properly. Remove the thermostat temporarily and remove the radiator cap. Remove some of the water so that the level is somewhat below the cap bottom, then start the engine and watch for rapidly moving water. That will show that the pump is moving water well. Allow the engine to heat up and keep track of the water movement. Shut the engine off at low end of 'normal' on the temp gauge and replace the cap so that it doesn't blow out boiling water into your face. Replace the thermostat and top up the water when cold again.
Posted on Sep 06, 2009
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Posted on Jan 02, 2017
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