Results 14 to 20 of 20
08-21-2010, 11:07 AM #14
08-21-2010, 03:17 PM #15
08-21-2010, 04:56 PM #16Professional Member
- Join Date
- Dec 2005
A thermal fan clutch changes the speed of the fan based on the temperature of the air coming through the condenser/radiator. When driving, there is more than enough ram air, so the fan ramps down so that it doesn't load down the engine as much - a mechanical fan can take up to 15 hp to run. As the vehicle slows, the air moving through warms up and the fan speeds up to compensate.
A common failure of the clutch is that they won't ramp up in speed. They stay stuck on low speed, and as a result, the ac performance suffers when not moving. It can even get to the point where the engine can overheat. One way to check if it is the clutch is to do the water trick. If you hose down the condenser and the vent air gets nice and cool and stays there, then you need a new fan clutch.
When the clutch is running full speed, you can definitely hear and feel it - especially if the engine is revved slightly.
08-21-2010, 05:06 PM #17
55 degrees alwaysI WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!
08-22-2010, 07:21 PM #18
08-22-2010, 11:17 PM #19
Yes, seperating the front cab area makes the a/c work well.
One year I insulated the roof of the cargo area with ductboard. It made a considerable difference in the temp of the truck after sitting for a while.
08-24-2010, 12:00 AM #20Professional Member
- Join Date
- Nov 2003
- Montreal, Qc.
41ºF coming out of the right center vent with the A/C on Max. Recirc and the truck idling.