Question about 1997 Chevrolet Blazer

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What could cause a 1997 chev blazer to overheat

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Blown head gasket, water pump, clogged radiator or leaking radiator, timing, faulty thermostat, cracked head, Thermo fans not working. They are a few things you can check without buying expensive equipment to check the engine.
Blown head gasket= remove spark plugs and check them for any signs of water on them. also check for bubbles in the radiator when you remove the cap and do a compression test on each cylinder.
Water Pump= remove radiator cap and see if there is movement in the water.
thermostat= remove and put in water with a temp gauge and see if it opens when the water heats up and at what temp.
Thermo fans= unplug from wiring harness and run a wire from your battery positive and negative terminal to the 2 pin plug, touch the other ends of the wires to the terminals in the plug to see if the therm fans turn, if they do the Thermo sender unit may be faulty or the relay.
If the engine has not had recent work done on it the timing should not be that far out to make it over heat.

Posted on Apr 03, 2015

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Ware do you want me to start .I Have a 96 S10 Blazer 4.3
Get back to me give more information about is happening and I will be able tell you what needs to be fixed .
You may not like it but it will be the truth .You can't let these engines over heat it will wreck them .

Posted on Apr 03, 2015

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Check for a stuck thermostat, also water pump could be bad

Posted on Apr 03, 2015

  • Robert franks Apr 03, 2015

    Check for a stuck thermostat, also water pump could be bad

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