Hello I have a 1998 Durango slt with rear overhead AC. My issue is I turn on AC compressor engages for approximately 2 min then begains to cycle off and on at this point compressor runs for 4-5 seconds system has a full charge has had vacuum pulled on it condenser is new evaporator is new front expansion. valve is new compressor is new pressure switches and clutch cycling switch are -new dnt know what to do with this problem. When compressor. Is engaged the pressure low side runs about 32. And high side about 115-125

 

At what ambient temp? Sounds like you are still low on refrigerant.

 

For the heck of it, if the compressor is on its own relay pull the relay and jump the relay with a jumper wire and see if it still acts up. I'm wondering if the AC relay is heating up and acting up. Hope this helps you out.

Tony

 

Don't matter what temp does it at all temps.

 

Low side pressure is very dependent on temp. (that would be, the temp outside.)

 

Sounds like you are a bit low on Freon as the high side seams kind of low to me but what is the outside temp that changes things.

Remember to check the gages you need above Idle not just Idle I stick a thick piece of paper between the idle points to bring idle up a bit.

 

I agree you are low on freon... the dual system on a 98 takes 32oz to fill from empty.

 

I'm going to move you back into the 1st Gen Durango forum.

 

Would a rear expansion valve stuck open cause this issue system is fully charged