Automotive Air Conditioning Information Forum (Archives)

chris142 on Mon March 23, 2015 10:37 PM

Year: 03-08
Make: dodge
Model: pickup
Engine Size: diesel
Country of Origin: United States

I'm getting slammed with dead clutch coils and non working fan clutches on these 03-08 dodge trucks with the diesel engine. Anybody else? The coils are just plain open circuits and the fans barely spin. Can count the blades as they pass by but the trucks dont overheat. Does cause stupid high readings in the 500 psi range though.

bohica2xo on Tue March 24, 2015 1:59 AM

Those should be the electrically actuated fan clutches. Are the clutches bad, or is it an electrical fault keeping them from locking up?

The no fan issue leads to very high underhood temperatures, as well as the crazy head pressures. This can overheat the clutch coil.

I would also check the idlers & tensioner - the high underhood temps can kill the bearings, and they will go in a few weeks after the repair - because when the fan does run, it puts another 10 horsepower on the belt.

-------------------------
"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.