OVERHEATING

  • Tiny
  • Hanch56
  • 2003 CHEVROLET MONTE CARLO
  • 128,000 MILES

Engine overheats when I use the AC.

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Tuesday, June 14th, 2011 AT 1:22 AM

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  • Tiny
  • Saturntech9
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When the car overheats are any of your cooling fans running?If so which ones?

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Tuesday, June 14th, 2011 AT 2:18 AM
  • Tiny
  • Hanch
  • MEMBER

Fans seem to be running, but when the AC is turned on I hear a lot of clicking and the idle goes up and down. Also having trouble logging in and out.

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Tuesday, June 14th, 2011 AT 4:22 PM
  • Tiny
  • Saturntech9
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Check and see if that clicking is the a/c compressor cycling on and off?Also when its overheating are both fans running on high?Is there a lot of air being pulled thru them?Have you checked the radiator and a/c condensor for being blocked with plastic bags debris like sand dirt animal fur etc?Sometimes it's hard to see the blockage of the fins. Also what size engine do you have?

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Tuesday, June 14th, 2011 AT 5:24 PM
  • Tiny
  • Hanch
  • MEMBER

Yes it is a 3.4 motor. The clicking is the AC compressor cycling on and off. The fans are running but do not seem to change speeds at all. Did not find anything blocking the radiater.

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Tuesday, June 14th, 2011 AT 6:05 PM
  • Tiny
  • Hanch
  • MEMBER

OK I just went out and checked out the fans behind the radiater. The one on the passenger side spins freely. The one on the drivers side does not spin at all.

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Tuesday, June 14th, 2011 AT 6:16 PM
  • Tiny
  • Saturntech9
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If the fan motor is frozen up solid and wont turn then sounds like you have a bad fan motor I would replace it. Sounds like that is your problem causing thr overheating and a/c compressor to cycle from too high of pressure from the fan being inop.

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Tuesday, June 14th, 2011 AT 7:03 PM
  • Tiny
  • Hanch
  • MEMBER

I believe that is the problem. Thanks for the help. I remember having that replaced last october, I'll check to see if it is warranteed. Thanks again!

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Tuesday, June 14th, 2011 AT 7:30 PM
  • Tiny
  • Saturntech9
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Your welcome thats what were here for keep me posted on if that fixs the problem.

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Tuesday, June 14th, 2011 AT 11:38 PM
  • Tiny
  • Hanch
  • MEMBER

Just got back from the shop that repaired the car last Oct. And they will fix it free of charge. It is the cooling fan assembly. I was very surprised they were so nice and apologetic. Thanks again your diagnosis was right on.

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Wednesday, June 15th, 2011 AT 7:53 PM
  • Tiny
  • Saturntech9
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Your welcome thats what were here for. If you decide to make a donation please make sure you say this is for saturntech9 that way I get credit for it.

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Wednesday, June 15th, 2011 AT 8:58 PM

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