Another AC question

[CBrabec]

My AC blows cold air when I'm driving, but as soon as I slow down or stop for any reason the a/c seems like it shuts off and the air gets warmer. But as soon as I take off and am driving again, the cold air comes right back on. What could be causing this sudden change? I do know that the air won't be as cold when just sitting still as it is when driving, but this is a very noticible rapid change.

 

[jakprince]

Sounds like a fan clutch problem to me.

 

[YFZBOB]

Check your Serpentine Belt for Glazing. It may need to be replaced.

Have it serviced.

 

[jnelson]

As you drive the truck air rush's thru the condensor, thus cooling it. When yo stop the fan clutch is not kicking in to pull air thru the condesor. I believe you have the wiring that goes in front of the fan clutch. if you have gone thru any high water lately, it is probobly cut. Thats what mine did.

 

[DPKetchum]

Sounds like low freon charge to me.

 

[Hoefler]

Sounds like low freon charge to me.

I seconded that!

 

[CBrabec]

It was low on freon. I had it charged and all good again. Thanks everyone for your responces.

 

[CSchmidt]

If your driving in very dirty conditions your radiator and condensor may be getting plugged. I drive in a lota dirty conditions and I have to blow everyting out from time to time to get everything cooling again. This would be cheapest thing to try first