Captain Cherokee

Any A/C gurus would be appreciated.

Problem started with no cold air after brand new compressor and dryer. The cold air lasted approximately two days. Prior to pumping it up with R134a, I vacuum tested the system. No leaks. Filled it up with R134a. It lasted approximately two days. It would never get ice cold, but it was pretty cold. At the same time of replacing the compressor and dryer, I also replaced the hi and low pressure hose. This is the hose going from the dryer to the compressor. It was old and rotting so I thought it would be a good idea to replace it. So with no leaks I'm confused as to why my freon won't hold steady and cold. I'm going to vacuum test it again tomorrow just to make sure.

Any advice would be greatly appreciated.

I have a 2001 Jeep Cherokee.

XJ JoeyD

Condenser leak?

Captain Cherokee

Would a vacuum test not take the condenser into consideration? My understanding or misunderstanding was that a vacuum test would show if any leaks at all were present.

If not, how can I test it to see if it has a leak?

flyingstick

A vacuum will show you are large leak. Pull a vacuum on it and see how long it will hold. Walk off and leave it for an hour. Your compressor oil will eventually show you your leak (unless it's the evaporator)

freegdr

possible leak at schrader valve port ,when you vacuum tested it the port was sealed by vacuum pump connection

kjc

You put in oil too, right? Of course you did.. I'd put in some of that UV leak finder. The high pressure in AC system is more likely to leak out than in (with vacuum)

Captain Cherokee

If you're talking about oil from the compressor. Yes.

cdhebert

^^^ What he said. This is the most common leak point - Especially after you fidget with it...

Captain Cherokee

Are you talking about the schrader on the high low pressure hose? It's brand new. I doubt it's really the problem. How can I check if it's leaking?

freegdr

if it held vacuum with pump hooked up to low side then did not after filled suspect area would be where pump was attached have it sniffed at a repair shop

Flowpro

Simple. Just put some soapy water on it and watch for bubbles. Fantastic, 409, etc. work great.

Captain Cherokee

I'm beginning to think it may be the condenser.

freegdr

this works also

freegdr

dont think test, start simple

Captain Cherokee

Freegdr,

Could you tell me how to troubleshoot a condenser? Is this something that would be in the Jeep Service Repair Manual?