Mechanics

04 GT

2004 Pontiac Grand Prix • 6 cylinder 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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Camaro_74
December 16, 2010.



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

Rasmataz
Dec 16, 2010.
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

Tiny
Camaro_74
Dec 27, 2010.
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-

Rasmataz
Dec 27, 2010.