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Temp gauge keeps running hot.

I'm trying to figure out why my temp gauge is running so hot when doing 60mph or over. I have to run the heater on high to make sure the car doesnt over heat which it hasn't done yet. But Im not sure if I should have the thermostat changed or what.

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Overheating, Try this procedure:

  • Dirt and debris can get lodged in the radiator air flow paths. This can block the radiator and cause your engine to overheat and damage the engine.

  • The thermostat can be stuck close. If you feel the upper hose very hot and the lower hose cooler than normal, it may be a stuck thermostat.

  • Make sure the radiator and the overflow bottle are filled to the proper levels.

  • Bleed air from the coolant system:This is best done by running the engine with the radiator cap off until you see when the air bubbles stop coming up.

  • Check the radiator fans: The easiest way is to turn on the cars air conditioner and turn up the A/C fans. Both radiator fans should come on when the A/C starts

  • Make a pressure test by using a pressure testing tool (available at most auto parts stores). Use the pressure shown on your radiator cap. Most cars are 16 PSI or less, so don't exceed that pressure. Replace the radiator cap if it doesn't hold the pressure.

Posted on May 09, 2015

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  • Cars & Trucks Master
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The thermostat for most vehicles is inexpensive - and pretty easy to replace. We can help explain the process for you if you want if you provide the year, make and model of your car.

Posted on Apr 08, 2015

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