2nd Gen Non-Engine/Transmission intermittant A/C

[JEdwards]

It's hot, so my 1999 3/4 quadcab dodge Ram decides to act up.

I had the ac recharged (with guages), and it worked awesome. . untill I shut it off and restarted it... . blew hot air. since then, it is intermittant... . sometimes cold, sometimes hot... . I have read the threads that were recently posted, and got some ideas... . does anyone have other ideas of what my problem is?

any help is appreciated.

 

[GaryOwen]

I had the same problem and it turned out to be a bad connection on the high pressure switch (at least I think it was the high pressure). I noticed the AC would work when I was going at slow speeds. When going at normal highway speeds the wind would push the wiring back and the plug in connection would not make contact. I put a wire tie on the connector and has been working fine for many years.

 

[HHhuntitall]

Does it blow hot at an idle while sitting still? And then work going down the highway?

 

[B.G. Smith]

The 99 has the clutch cycling switch which is mounted in the side of the accumulator. You can by-pass that switch and see if that is the problem. bg

 

[JEdwards]

Thanks for the suggestions. I am currently in fire camp in SoCal. I'll check things ut when I get home. . meanwhile I am melting. HHS,no consistent operation at all. When it does work, it doesn't last long.

 

[HHhuntitall]

How long did it sit after you shut it down? I'm curious if it had a leak after removing the gauges.....

 

[JEdwards]

HH, it sat maybe 20 min(1beer). Ran cold, shut it off at grocery store, approximately 10 miles down the road. 10 min later ran hot when I started up. Since then, no consistency, sometimes cold when started, then hot, sometimes hot when started then cold, sometimes never gets cold, sometimes changes during drive. .