Help ..Fan has gone Haywire
12-17-2019, (Subject: Help ..Fan has gone Haywire ) 
Post: #7
RE: Help ..Fan has gone Haywire
Paccar likes to turn the fan on when a/c compressor comes on. If on defrost a/c compressor will cycle on and off. Now should the fan have stayed on, no. Just saying a/c pressure switch can stick causing fan to stay on.
From your gauges truck hasn't warmed up yet so doubtful it is coolant temp related.


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RE: Help ..Fan has gone Haywire - Mattman - 12-17-2019



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