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Old 07-27-2015, 07:10 PM
Location: Podunk, IA
6,132 posts, read 4,090,036 times
Reputation: 6988


I had one rebuilt for my 1990 Montero. When I got it back it worked perfectly.
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Old 07-28-2015, 07:22 AM
Location: East of Seattle since 1992, originally from SF Bay Area
39,418 posts, read 70,691,372 times
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I wouldn't spend even $500 on a vehicle that old to fix AC, better to do without it or do a McGyver fix. No need to replace the ECM to get the AC back, just bypass the relay. Only the AC compressor relay is bad, and is soldered in. Find a wiring diagram online, and you can cut the wire going from the ECM to the AC compressor, then connect it (from the compressor) to the pressure switch on top of the accumulator. The only problem is that your engine may die at stoplights, because it won't know to increase the RPMs when the AC is running.
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