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improving a/c performance on 240 200

posted by  Stephen Webb on  Wed Jun 26 01:51 CST 2002
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There has been some discussion about this lately. I don't know if '90 falls on the good side of the line, or the bad side, but I'm afraid it's the bad side.

I think in '91 they upgraded the evaporator core; I could be wrong.

I'm a pretty big fan of A/C, and I plan on taking some trips to hot areas (like Texas) in my car, so I have decided to plunk down the money and make my A/C work well.

I have purchased the A/C retrofit kit from FCP Groton. Pricey at $210 (I think it used to be $190..?) - it includes a new "more efficeint" evaporator core, expansion valve, some AC hose of some sort, and some misc parts. The evaporator core is the big win, I gather, though the expansion valve might be some new-fangled design that works better - who knows.

I will be switching over to 134a refrigerant which in my experience doesn't work as well. The new evaporator should help.

I also plan to mount a cooling fan on the condenser which will run when the compressor is on. I believe Volvo did this on later models, and is probably responsible for better cooling, esp at idle.

I won't have this done for a week or so, but I will let you know how it does.

-Steve






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