2003 CHEVY BLAZER CAN THE AC COMPRESSOR MAKE UR CAR RUN HOT

  • Tiny
  • 2003chevyblaze
  • 2003 Chevrolet Blazer

Engine Cooling problem
2003 Chevy Blazer 6 cyl Two Wheel Drive Automatic 120000 miles

I'm at witts end, on my truck I have changed the radiator, thermostat, 90% of the hoses and the water pump. The thing is my truck still runs hot. BUT. Only when the AC is on. It won't run hot if I drive in the 90+ degree weather but soon as I cut on the air. Temp goes up till the check engine light comes on. But there is a twist. It don't run hot at night. The temp will rise but just above the half mark. Some people told me to get the AC check. Could be low or need a ac cooler thing that's in the front of the coolant raidator, or even the compressor. Its hot in FL need help soon

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Saturday, August 21st, 2010 AT 6:08 PM

4 Replies

  • Tiny
  • legitimate007
  • Expert
  • 5,227 posts

Does the vehicle have two fans?

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Friday, August 27th, 2010 AT 9:53 AM
  • Tiny
  • 2003chevyblaze
  • Member

No there is one clutch fan and its been replaced

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Friday, August 27th, 2010 AT 10:34 AM
  • Tiny
  • legitimate007
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Have you verified that the fan comes on when you turn the a/c on? Because it is supposed to. Also you may want to check the engine coolant temperature sensor.

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Friday, August 27th, 2010 AT 12:36 PM
  • Tiny
  • 2003chevyblaze
  • Member

Ill check the sensor. But the cluch fan is on a fan

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Friday, August 27th, 2010 AT 12:57 PM

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