Ac Stalls Engine

[howudodat]

92 LS400,

if I start the car with AC in auto, the engine starts and immediately stalls.

if I start the car with NO AC, the engine runs fine

if I start the AC after the car is running, the engine stalls

if I hold the RPM's at ~1500 the engine wont stall, but noticeablly loads down

no cold air blows out.

I'm thinking the compressor has gone bad, or frozen and is loading down the system. I wanted to see if anyone else has seen this problem before I invest in a new compressor.

Peter

[jzz30]

yep sounds like your compressor is dead

[nc211]

I would also advise to NOT turn it on anymore. If it's got so much load resistance on it now to stall the entire engine, then I can only imagine the amount of strain it's putting on all the other components...aka....drive belt and possibly the timing belt.

[blake918]

Is your IACV functioning properly? Did you run the a/c check: http://www.lexls.com/tutorials/air/accodes.html ?

[howudodat]

Is your IACV functioning properly? Did you run the a/c check: http://www.lexls.com/tutorials/air/accodes.html ?

Ran the tests. No stored codes, but as soon as it kicks on the AC it kills the engine again.

Peter

[RFeldes]

I've got an idea...take her out on the highway up to about 80 mph and turn on the AC. Whatever falls out the back is part of your problem....LOL "Kompressor Kaput!!"