A/C Cherokee Sport 2001
 

A/C cuts out in high ambient temps at idle i.e. in traffic. It's ok at cruise and comes back after it has been shut down for a while. Any thoughts?????

Re: A/C Cherokee Sport 2001
 

Low freon, low pressure switch, high pressure switch.... one of these three or a combination.

Re: A/C Cherokee Sport 2001
 

Thanks, Dougy. I'll have those things checked.

I thought I had read something once about Jeep having a problem with the A/C on Cherokees and it was related to high ambient temps in the engine compartment. The fix was to some how reduce the duty cycle by half so that the a/c pump ran half the time, or something to that effect. So, I got to wondering whether the problem had something to do with that, but I can't remember where I read about the problem with Jeep a/c.

Have you heard of this?

TIA.

Re: A/C Cherokee Sport 2001
 

Yes, it was a customer pays for it bulletin from Chrysler. Orifice style A/C systems had this problem, if I remember correctly. Don't quote me on this, cus without beer, my memory his terrible. Anyways, it was a rare situation, have your tech check your A/C pressures, and you should be fine. It's usually low freon, 134a does leak down in winter if the seals are drying out.

Re: A/C Cherokee Sport 2001
 

Thanks much, Dougy. Good stuff to know. I find 6 beer is optimal for memory recall and shooting pool.

Cheers!

Re: A/C Cherokee Sport 2001
 

Sounds like an overcharge, or incondensibles (ie air) in the system. If you use the defrost in the winter, it will turn on the A/C compressor, as cold air is a much drier air, which clears up your windows much quicker. That should help prevent seals/gaskets from drying out.

Sorry, I am an A/C mechanic.