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Originally Posted by Zerohour3k
Thanks for the advice, guys!
Yeah.. I was sorta wondering why he couldn't just replace the compressor (~$200 + new pressure switch + R12 fill).. which would only cost me like 400.. and instead, made a big deal of replacing all the fittings, dryer (which I just replaced no more than a year ago).. compressor.. and god knows what else.
They do R12 there.. but the guy admitted to me that he's a fan of 134a. I'll probably go back and just have him replace the compressor, instead. As for my radiator? I don't want to go fiddling around with my oil cooler lines.. so I'll probably just let him do that, too.
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Don't worry about your oil cooler lines, they can remain in place while the radiator is removed, its the transmission cooler lines that go into the radiator (provided you have an automatic trans) and they come off easy (you should have a couple of small plugs to close off the lines so the fluid doesn't all run out of the transmission while they are disconnected from the radiator)
I said earlier "replacing the evaporator" when I walked away think about it still I realized I meant CLEANING the evaporator because they get plugged up with dust and, if you've often had a dog in the car, hair. The expansion valve should be replaced to assure a great working AC. Some will say its not necessary but if you put a lot of new stuff in a system and the old valve has a tiny piece of anything to plug it up you just wasted a bunch of $
Always insist on a new dryer if its been up to atmosphere it will be contaminated.
A proper 134a conversion is going to cool you ALMOST as well as R12 but will cost more due to the need for a parallel flow condenser and wind up costing more even though the gas costs less, but realize there is a possibility that lubricating oils are incompatible (regardless of what they say you don't want to mix the oils! or you'll have a problem brewing with short compressor life.
I had an Indy I know (I worked there part time) replace my expansion valve, added a new dryer and replaced the pressure and suction lines on my '85 300TD. My old compressor was fine so thankfully I didn't have that expense. It ran me nearly $1000 including R12 (hoses are expensive and I got off easy!). The system has been holding gas perfectly almost a year later and we just gave it a workout on a trip to LA recently and I'm glad it was done properly because it will really chill you!
