Boomshakaboom

as the title read, my compressor, in my 01 Cherokee, cycles on and off every few second yet it blows warm air.

I know this is a sign of a leak/low refrigerant. I bought a recharge it and it full yet still no cold air.

could a small leak still cause this?

any ideas would be helpful

nujeepguy

any pressure?. mine did that a month ago. i added some till it stayed on. its cold now. if no pressure you have other trbl.

freegdr

Sounds like its either on defrost or still a little low on freon. Or its leaking out just as fast as its going in.

Rambler65

What are the pressures in the system when the compressor is running? (You need a full gauge set to see the high and low side readings, not just the cheap low pressure dial built into the recharge bottles sold at places like Autozone.)

Here's a system diagnosis chart that may help:

http://www.sanden.com/objects/SANDEN...OSIS_CHART.pdf

Boomshakaboom

I will try to get a gauge later today. What is the normal high and low pressure reading?

Boomshakaboom

you mean it's stuck on defrost? If so how can I trouble shoot that?

Rambler65

It varies depending on ambient temperature and humidity, and the specific AC system. Here's the pressure and diagnosis chart from the 1999 XJ service manual: