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I have a 2014 Lexus RX350 that doesn't blow cold air. The clutch never tries to engage on the compressor and the condenser fan never runs. Static pressure was about 100 psi (the garage was 85' f) on both the low and high side. I removed the clutch coil relay and jumped it out to force the clutch to pull in. The compressor clutch engaged, but I got no change in pressure on the high or low side (the condenser fan never came on either). After shutting of the motor, I can spin the clutch with one finger with no resistance.

I'm thinking I may have a bad compressor, but I'm also concerned with the fact the system isn't even calling to kick on. Am I looking at this right and should I replace the compressor?

Pᴀᴜʟsᴛᴇʀ2
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Nick Collins
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1 Answers1

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No change in pressure from low to high with the compressor running, the clutch engaged, generally means the compressor is trashed. Even with something dramatic, like the orifice tube plugged, you should get a differential in pressure. If you can spin the actual compressor with your finger, that is another indication that the compressor has failed. The compressor should have some resistance, some friction.

In general, I like to get rid of the things I know are wrong and see what's left. If the compressor really did fail, it is likely it will have contaminated the system with metal from the compressor. You should flush the system with A/C flush and shop air, replace the receiver or dryer, replace the orifice tube and install a new compressor.

edt11x
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