Hello all,

great forum you all have here.

it's a great resource for the ram owner.

On my truck the A/C compressor will run on any heater setting except for off.

Just for short term I have pulled the relay, as its getting a lil cold in Chicago.

Anyone know what the problem could be?

 

Does it blow cold with the temp setting at it's hottest

 

No, It does blow warm air, but with the cold A/C mixed in.

 

No a/c expert here but, sounds like a comp.switch problem.Comp should not engage unless it's on A/C or the defroster mode is on.

 

sounds like your thermostat if you say you can feel cool air when resistor is on hot

 

My thermostat is making the a/c compressor run?

 

I believe that the compressor runs in all positions. It adds dry air to the heat to keep the windows from fogging.

 

Mine dosen't run in heat mode exept in defrost.