Should the AC compressor cycle with the heat on?

[Ricardo Aguirre]

I know that the compressor cycles on and off with the AC on controls set to deffrost/ bi mode/ etc...) but if I have the thermostat on the heat should my compressor still cycle on and off?

 

[TRACket Paul]

Yes. Check the PDF's in the AC folder of my library for more info.

 

[Ricardo Aguirre]

thanks alot paul, I guess the only way for it not to cycle is on floor and vent, it just seems like a waste of gas :fire:

 

[Scott Tanner]

it cycles to run the a/c to dehumidify the cabin air down to the mid-30's outside air temp, then it shuts off and you get straight heat..

 

[EddieS'04]

I was under the impression. It cycles to keep the system lubed. Mainly the seals.

My cyles all the time on heat cycle. Even when the humidty is very low or non.

 

[Dreman]

Eddie,



It's the outside air temp that makes the difference. When the outside air temp is 32 or below, the humidity drops pretty low as the moisture in the air freezes. So the ac compressor doesn't have to run when the outside air temp is 32 or below.

 

[EddieS'04]

David,

I understand what you mean. Not very often I drive in temps below 32. So its something I havent knowledge of. Or havent paid attention to it.

Question is where is this temp probe located? That is part of the HVAC.

Cant be the one for the overhead. Not all Tracs have that option.

Thanks.

 

[Scott Tanner]

below 32, it'll run for a few seconds when you first start the engine to lube the seals

 

[mike burns 3]

Not sure abotu the cycleing for lube but it will cycle for defrost.

 

[Yardsale]

I believe (and could be wrong - working with a poor memory) that the temperature sensor is located along the lower bumper cover (or whatever it's called) off center about 18". It's small.