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how to find debris when compressor fails

Rick Fisher on Fri August 14, 2015 1:52 PM User is offlineView users profile

Year: 2006
Make: nissan
Model: pathfinder
Engine Size: 4.0
Refrigerant Type: 134
Ambient Temp: 101.1
Country of Origin: United States

My 06 Pathfinder compressor stopped suddenly it just wouldn't come on when i started the car. Mechanic simply said it's a dead compressor.
Where do i look first for debris? Second?

Thanks
Rick

HECAT on Fri August 14, 2015 6:20 PM User is offline

If it was working fine and stopped suddenly, it may not be the compressor. But to answer your question? First, larger pieces will be trapped at the inlet chamber of the condenser. You can back blow the condenser into a clean towel to get a look at what you have. You can also back blow a filter/dryer to see if fines have passed the condenser, and you can back blow the evap to see what fines have made it to or thru the TXV.

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Cussboy on Fri August 14, 2015 11:26 PM User is offline

Quote
Originally posted by: Rick Fisher
My 06 Pathfinder compressor stopped suddenly it just wouldn't come on when i started the car. Mechanic simply said it's a dead compressor. Where do i look first for debris? Second? Thanks
Rick

Rick - can you turn the compressor readily with a wrench on the center nut? Engine off, of course.

Did you momentarily jump the compressor clutch wire with 12 volts positive (a fused jumper is best for this) to see if the clutch engages and pulls in? What if you tap it with a hammer while doing that? I think first you need to confirm if the compressor is bad, and if it stopped suddenly like you said, I'd do what I posted. It could be something like a seized compressor or as simple as a bad fuse.

Anyway, if a compressor seizes typically the condenser gets replaced and the high pressure lines flushed, and the receiver-drier replaced. At minimum.

Edited: Fri August 14, 2015 at 11:27 PM by Cussboy

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