Old Jul 9, 2017 | 08:36 AM
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ala_xfire
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Joined: Dec 2010
Posts: 12,780
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From: Lineville, AL
Default Re: Anyone know how to check a Fan Cooling Module?

No, when the A/C is on, the fan will always run at low speed regardless of engine temp.
The fan will speed up if the PTCM decides that extra air flow is needed.

Without A/C, the fan does not normally run at all, if the outside temp is cool enough.
 
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