2004 Ford Explorer AC sometimes sounds like a police siren

Noise from ac behind front seat occationally sounds like a police siron

it sounds like the bearing in your rear a/c fan blower is worn out.


or something crawled in there and is screaming for help :rofl: :rofl:

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In any event, I’m still trying to figure out what a “siron” is.

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The expansion valve for the rear AC is defective.

The noise is from the refrigerant passing thru the bad expansion valve.