1999 chevy tahoe overheating to 210?

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erhardttj

New member
I had a small leak in radiator added that stop leak with in 3 days leaked stop. Ac was not working added 134 A cold ac today and the water in the plastic coolant overflow tank was very high and boiling. new Thermostat 3 months ago along with rebuilt Radiator. AC or something else?
 
well, if worse comes to worse, i would replace your radiator, hoses, water pump & thermostat, but start out with thermo. or see if it is working by taking it out and putting it into a pot of boiling water to see if it opens properly, if that works then put it back (or replace it anyways) and flush your radiator. if that dosent solve your problem keep going down the list, next you have the water pump (Chevy's are notorious for having the water pump go bad). you can check to see if thats bad if the fan blade has too much play (while the engine is off) wiggle it back and forth and spin it around. if it has to much play, that is most likely the problem. good luck.
 
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