04 PONTIAC GRAND PRIX GT

  • Tiny
  • camaro_74
  • 2004 Pontiac Grand Prix
  • 6 CYL
  • FWD
  • automatic

My 04 pontiac grand prix gt egine cooling fans turn on late. I changed the coolant temp sensor but still the same. The temp gauge reads a little over 3/4 of the way when the fans turn on. What else can be the cause for this.

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Thursday, December 16th, 2010 AT 12:21 AM

3 Replies

  • Tiny
  • rasmataz
  • Member

Could be the computer controlled of the relay-also try replacing the engine thermostat and see what happens it controls the engine temperature sensor.

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Thursday, December 16th, 2010 AT 12:56 AM
  • Tiny
  • camaro_74
  • Member

I changed the thermostat and its still the same. The fans don't come on til after the temperature is between the 3/4 and the red zone. Could it be the fan relay

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Monday, December 27th, 2010 AT 3:14 AM
  • Tiny
  • rasmataz
  • Member

Try swapping it with a like one and see what happens-don't work double check wiring at the CTS, Fan relay-if okay could be the computer control circuit of the relay-

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Monday, December 27th, 2010 AT 9:35 PM

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