6 replies to this topic

[oblivionnewtonjohn]

I stopped by an auto store to get some freon but noticed the clutch did not move/engage with the compressor was on, I did not want to waste $70 to find out even though the sales rep tip toed around the issue saying it may be broken, or "maybe" it needs the oil in the can to lubricate it. 

 

I wasn't about to let him play with my money until I did some research. AC repair is new to me, what are the most common failures?

 

I see a blue sticker with an "S" name on the chassis indicating it was converted/replaced at some point. 

[cbstdscott]

The clutch will not engage unless there is coolant in the system.

The most common cause of coolant leak is that the seals dry out from lack of use. So use your a/c every day.

[oblivionnewtonjohn]

Was not working when I purchased, PO said it hasn't in about two years. 

Will the high end R134 with the sealant work or a gamble? 

[cbstdscott]

It will work... until it leaks out.

Replace all seals and the dryer. Maybe the compressor is ok... maybe not. I think you need to replace the compressor for the newer coolant.

[KSousa]

first you need to identify if your car has been converted to r134a or if its still set up for r12 so you can buy the appropriate parts. And like Scott suggested, you should replace all the seals and the receiver dryer. Then you need to pull vacuum on the system to insure all the leaks are taken car of, and also to remove all the moisture and oil from the system. Once thats done then you can add in the correct amount of fresh refrigerant and the proper amount of oil for your system. If you overcharge the system, you can damage the compressor, if you undercharge it wont pull much heat out of the cabin. Not enough oil, and you can damage the compressor, too much oil and you can also damage the compressor as well as reduce cooling efficiency. Before you start adding any refrigerant or oil, I would suggest reading through the AC section of the service manual. 

[oblivionnewtonjohn]

Will do, would this kit cover the repair of seals?  

http://www.napaonlin...1756_0158868737

 

And this is the dryer?

http://www.napaonlin...8632_0140457346

 

Thanks for the feedback. 

[Richardcoto452th]

Check to see if it's pressure related first by connecting the both blue/red wires on the pressure sensor switch together and then quickly turn on the A/C and hear for a clicking on the compressor. If it clicks your in luck if not then there is an issue elsewhere.