A/C questions for trouble shooting

6-71 · **Posted:** Sat May 25, 2013 8:11 pm

I charged up my A/C last week and it was blowing cold and today I was out and wanted to get a little cool air and A/C no worky! :yikes:

Compressor doesn't engage and the 20 amp fuse is not blown. Is there a relay that can be checked? either on the dryer or the compressor?

My A/C was switched over to 134 sometime ago and so I used 134 for the charging and everything was working like it was supposed too. Any idears? :confused2:

Cheers

etc1006 · **Posted:** Sun May 26, 2013 1:38 am

Did you by any chance overcharge/slightly undercharge it? Last week was pretty warm compared to today so the temp/pressure will be slightly different with relation to the ambient from today. If it was slightly undercharged that may be the issue. You can check by jumping the pressure switch. Make sure you have your gauges on to see what us happening when you kick it in.

6-71 · **Posted:** Sun May 26, 2013 6:32 pm

Hmmmm possibly I might have and by relieving some pressure in system it might engage the compressor? That would be nice it that works and I'll check that tomorrow and post my progress.

Bobt · **Posted:** Tue May 28, 2013 9:19 am

Sounds like the system has a leak in it. Check around the 2 lines on the passengers side front and see if there is oil\dirt on the line. Thats a common o ring to leak.

DRRummel · **Posted:** Tue May 28, 2013 4:38 pm

6-71 · **Posted:** Tue May 28, 2013 6:17 pm

Well I don't have gauges and i did kind of a retarded move and I used a scribe to press on the nipple on both hi and low sides and nada and I mean not a damn thing. So I'll need some mechanical help after Carlise trip. I'm leaving my filly home and I'll take my truck.

DRRummel · **Posted:** Tue May 28, 2013 10:59 pm

We can fill the system with Freon and dye. Then look for the Freon leak with a UV light.

It is best not to let the system stay open to air (actually the moisture in the air) for too long.

Bobt · **Posted:** Wed May 29, 2013 6:35 am

I have a leak sniffer as well as a UV light. Sounds like with a leak like that you should be able to hear it.

Mustang Club of Maryland

A/C questions for trouble shooting

Who is online