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Help with '92 Lexus A/C Compressor please

KC1 on Sun August 03, 2008 11:50 PM User is offline

Year: 1992
Make: Lexus
Model: LS400
Engine Size: 4.0 V8
Refrigerant Type: r-12
Ambient Temp: 90
Pressure Low: n/a
Pressure High: n/a
Country of Origin: United States

Greetings! I am looking at possibly buying a clean '92 LS400 that supposedly the A/C quit working about 3 weeks ago. Prior to that point it was "ice cold" per the original owner. When turning on the A/C, the engine idle kicks up a bit, but the compressor clutch does not even try to engage, nor do the electric fans in front of the radiator kick in (which I thought they were supposed to do whenever the a/c turns on...?). The green L.E.D. above the A/C button on the dash blinks which I understand is an error code. I have also read that problems with the A/C is not an uncommon issue with these cars.

With the key off, I reached down to try to turn the compressor by hand and it is locked tight. Is this a bad compressor? I have read something about a compressor lock-out on some of these cars but I myself have never heard of such a thing. Seems to me it's a blown compressor. Any ideas? Any rough repair estimates? The car is stickered for R-12 so I would guess it would also need to be converted over to R-134 as well after any repairs.

Thanks in advance!

chris142 on Mon August 04, 2008 12:02 AM User is offline

Run from that car! Those are nothing but trouble. It uses a system much like a POA in an older GM. It won't work well on R134a anyway.

KC1 on Thu August 07, 2008 10:58 PM User is offline

YIKES!!! Thanks for the heads up... You know we have now looked at a total of four of those cars since I wrote that and three of them had a broken A/C. And the fourth had sloppy bushings on the front end (another problem with those cars...)

94RX-7 on Sat August 09, 2008 12:46 AM User is offline

Quote
Originally posted by: chris142
Run from that car! Those are nothing but trouble. It uses a system much like a POA in an older GM. It won't work well on R134a anyway.

What exactly makes them so troublesome? The EPR?

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