OVERHEATING WHAT CAN BE THE PROBLEM

  • Tiny
  • pstazy006
  • 2000 Pontiac Grand Prix

My car is overheating all the time. Goes straight up to HOT temp and shuts off automatically when driving it. Have tried replacint thermostat, waterpump, radiator, fans are working. Checked for any leaks and there are none. Even replaced senor. What can be the problem? Help.

Friday, August 26th, 2011 AT 6:11 PM

6 Answers

  • Tiny
  • JDL
  • Expert
  • 16,290 posts

Where applicable, if it gets too hot, it will pop the radiator cap to release pressure and the coolant reservoir will fill-up in a hurry. Is the reservoir filling up? I haven't looked to see if you even have a radiator cap.

Any applicable trouble codes? Check oil pressure.

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Friday, August 26th, 2011 AT 6:18 PM
  • Tiny
  • pstazy006
  • Member

Sometimes. I do have a radiator cap. Oil pressure is fine. When I took out the thermostat it seemed to run fine. It stopped overheating. Will It damage my car if I continue to drive without thermostat?

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Friday, August 26th, 2011 AT 6:31 PM
  • Tiny
  • JDL
  • Expert
  • 16,290 posts

You can take the thermostat out, just for testing, hook the hoses back up. With cross-flow radiator, drain the cooloant down till you see the top couple of passages, where possible. When you start the engine, flow is instant, if no flow, something is clogged-up.

Is the engine siezing when it stalls?

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Friday, August 26th, 2011 AT 6:34 PM
  • Tiny
  • JDL
  • Expert
  • 16,290 posts

If you leave the thermostat out, at the least, it will burn more gas, take longer to reach operating temp. May or may not set a code? In degrees F, how hot is it getting?

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Friday, August 26th, 2011 AT 6:48 PM
  • Tiny
  • texas7
  • Member

Mine does almost the same except I go through lots of coolant and see no leaks and no water in the oil. What could that mean?

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Monday, March 26th, 2012 AT 4:20 AM
  • Tiny
  • JDL
  • Expert
  • 16,290 posts

You need to make a new post, that way, everybody will see it. Piggybacking your post is not a good way to do it.

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Monday, March 26th, 2012 AT 3:09 PM

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