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Old 01-21-2008, 06:51 AM
GPcarnut GPcarnut is offline
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Fans always on
I got a 2000 Grand Prix GT 3.8 non s/c the fans are constantly running. The engine light is not on what could be the problem? Thanks
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Old 01-21-2008, 07:04 AM
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BNaylor BNaylor is offline
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Re: Fans always on
Is the IP temp gauge working properly? The gauge shares the same signal from the ECT sensor to determine when to turn the fans on. Fans are controlled by the PCM module.



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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8
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'99 Buick Regal LS - L36 Series II 3800 V6
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Old 01-21-2008, 07:50 AM
GPcarnut GPcarnut is offline
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Re: Fans always on
seems to be working. fans just started to come on thursday.Now when i just turn the key to start fans kick right on.
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Old 01-21-2008, 07:54 AM
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Re: Fans always on
Are both cooling fans turning on and can you determine if it is low speed or high speed?



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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8
'02 Oldsmobile Alero GL2 - LA1 3400 V6
'99 Buick Regal LS - L36 Series II 3800 V6
'03 Honda CR250R MX - 2 Stroke 250cc
'97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold)
Timeslip 08/12/06

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Old 01-21-2008, 07:57 AM
GPcarnut GPcarnut is offline
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Re: Fans always on
both are on. i beleive high speed my heat doesnt get hot at all. i thought it was the fans being on all the time.
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