A/C leaking refrigerant out of rear condensation hose

[Scotty Mo]

OK I'm going to try to keep this short. I get back from a long trip (3000K)that I had the A/C on the whole trip. The night I get back I notice what looks like antifreeze leaking out of the condensation drain in the rear. I for the life of me can't figure out how that could happen. We'll it didn't it was refrigerant and the A/C started blowing warm and the clutch wasn't engageing. I pumped a can in the system the clutch kicked on and it started to blow cool. Pressure was still low so I put another can in and that brought it up to 45. All was good and the wife was happy for about two day's and it started leaking again. One thing I thought was strange is that the passenger and rear vents were allot colder than the drivers side. PLEASE HELP!

If there is a post on this already I'm sorry I've been all over this forum and can't find anything related.

 

[imp]

By "rear drain", you mean the vehicle's rear A/C unit? If so, then yours must have the system with 2 evaporator cores, one up front, one in the rear. This sounds as though your rear evaporator coil has sprung a leak, or, a fitting or other connection close enough to the evap. to allow the refrigerant oil to exit through the condensate drain.

You cannot "see" refrigerant leaks, the stuff exists as a gas at atmospheric pressure, and bleeds away into the atmosphere, leaving a film, or more, of oil which was carried there with it. The lubricating oil normally circulates throughout the system, carried along with the refrigerant.

imp

 

[Scotty Mo]

Thanks for the response! I haven't torn into the inside of the Exp yet but I had been told it only had one unit. The refrigerant had dye in it that's how I was able to see it leaking.

 

[Curtis]

So do you have rear AC or not? Im not clear
either way, the evaporator core where you saw the refrigerant dye needs to be replaced. not an easy job I bet.

Or the line going to it is leaking near or at the join... lets hope its a line, I think that would be easier and cheaper.