Hey everyone,...This has been getting on my nerves and I don't remember the truck doing this last summer,....anyone else experience this problem? It's a 99 3.0 4X4, and other than the air seeming like it needs the refrigerant recharged,....when the air is going, the idle cycles up/down, up, down, till I set the heater control to straight up (off) . Then the engine idles normally....any help would be appreciated... Thanks, Joe

 

Joe, If your A/C is cycling on and off quickly it more than likely is low on freon. This will cause the idle to very trying to keep up with the load.

 

Hey Rev....Thank you,...that makes sense because my air has been kinda not super cold....I wonder how much for a recharge? Joe

 

You can pick up a can of 134a with charging hose at Kragen or Autozone for about 15-20 dollars.