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Cannot figure out the cause of our car overheating?

Tiny
RANDBELLIS
  • MEMBER
  • 2002 CHEVROLET CAVALIER
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 107,000 MILES
Cannot figure out the cause of our car overheating. Replaced radiator cap, head gasket, temperature sensor, radiator, fan relay, and thermostat. The fan does turn on around 200-210 degrees. Seems worse when we have the fan on in the car, which seems weird. Air conditioning does not work, low coolant and leak somewhere we never bothered to fix. Thought about the cam sensor and doing a pressure test. Any other suggestions?
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Thursday, July 18th, 2019 AT 11:50 AM

4 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

If you have a coolant leak somewhere, this is probably the cause of your overheating issues. The correct way to diagnose a coolant leak is to do a pressure test to find the source of the leak. Here is a guide for you to go to:

https://www.2carpros.com/articles/radiator-pressure-test

Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
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Thursday, July 8th, 2021 AT 10:47 AM
Tiny
RANDBELLIS
  • MEMBER
  • 3 POSTS
We did a pressure test and it was fine. We do not have a coolant leak. Thanks though
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Thursday, July 8th, 2021 AT 10:47 AM
Tiny
RANDBELLIS
  • MEMBER
  • 3 POSTS
We bypassed the heater core and that seemed to have worked. Guess we either need to replace it or maybe flush it out. So far so good anyway
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Thursday, July 8th, 2021 AT 10:47 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Was your vehicle's floorboard wet at all?

Thanks,
Alex
2CarPros
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Thursday, July 8th, 2021 AT 10:47 AM

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