Yeah, research shows a pretty extensive list of replacement parts to do it “right”. I tried it years ago on an old Mazda B-series pickup but kind of half-assed it and it never really worked right. I’ll probably pull a vacuum leak down check and refill it with R-12 if it holds. Winter is coming and flushing the heater core will be more important for the immediate future.

Thanks for the P/N’s for the t-case switches. Got caught running errands all day yesterday so I still haven’t gotten underneath to check things out, I did get a new oil pressure switch and if working on my 4-runner doesn’t take too much time I hope to get to the Raider for an oil change and maybe clean the engine.


1989 Dodge Raider V6
2001 Jeep Wrangler 4.0L
2008 Toyota 4-Runner SR5 4wd