"Hidden" A/C on?
Senior Member
Joined: Jul 2007
Posts: 2,036
Likes: 2
From: Maine
The A/C compressor running makes the evap coil get cold, this cools the air? Are you saying this is not true? I thought the evap cooled the air and when you turned up the temp it simply reheated the air.
I just would prefer a button to turn on/off the compressor in any mode, if the windows fog up I can hit the button. So the "MAX A/C" does the same thing as pushing the Recirculate & A/C button while in the "dash vent" mode?
Another thing I've noticed is speeds 1-3 seem a a lot lower than the 4th speed. It's almost like they used too high of a resistor value for the lower speeds. I hope this is normal and not an indication of a potential resistor problem.
I just would prefer a button to turn on/off the compressor in any mode, if the windows fog up I can hit the button. So the "MAX A/C" does the same thing as pushing the Recirculate & A/C button while in the "dash vent" mode?
Another thing I've noticed is speeds 1-3 seem a a lot lower than the 4th speed. It's almost like they used too high of a resistor value for the lower speeds. I hope this is normal and not an indication of a potential resistor problem.
Member
Joined: Jul 2011
Posts: 91
Likes: 0
think of the A/c compressor running as a "dryer" then even though the air temp is lowered "gets cold" the heater core is open and the air is "reheated" that is how the air gets dry and the window is defrosted/defogged.. the warm air hits the windshield water gets picked up in the air and taken back to the inside coild the cold coil "wrings out" moisture from the air. then the air hits the heater coil and the temp is reheated to make the cab comfortable and to defrost/dehumidify for the operator based on your choosing the dial position you want.
Senior Member
Joined: Aug 2008
Posts: 1,553
Likes: 1
From: CO
I've had trucks with true manual A/C before and understand that you need to dehumidify during rainy weather. What I don't like is there is no indicator letting you know the A/C is running.
Does the truck "secretly" run the A/C in other modes or is it just defrost?
Does the truck run the A/C when you're trying to melt the ice off your windshield in the winter. On older vehicles low temperatures would prevent the low pressure cycling switch from activating.
Does the truck "secretly" run the A/C in other modes or is it just defrost?
Does the truck run the A/C when you're trying to melt the ice off your windshield in the winter. On older vehicles low temperatures would prevent the low pressure cycling switch from activating.
I THINK my 04 heritage did the same with the panel and floor setting but not sure. the more i think about it, the more i think it didnt have that happen. i know my 08 doesnt do it tho. but also the thermostat dial is messed up in my 08 now, pretty much since it had about 10k on it...just got used to it i guess lol