Ac Trouble

[OverlandMJ]

I have an 88 4.0l. I went and had the 134 conversion done and had the system vac and topped off. That's all. No condenser or drier done. It blows cool at best. I noticed this morning that when its not on high and the fan isn't loud the ac sounds like a slightly opened valve on a propane bottle. Is this normal. I also don't hear the compressor clutch kicking on and off. I haven't found a leak anywhere. There is die in the system from the charge. Another thing was the tech told me it seems there is a restriction somewhere by what the gauges were showing. Any ideas on what my next chore should be?

 

Thanks in advance!

 

Gary

[sloride]

Expansion valve maybe?  I have been researching doing my conversion and everything I read mentions changing the expansion valve is tops on the list to change.  That's not to say that's the cause of your problem, but I would focus my attention on that first.  Good luck.