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Ask Juan Crespo Your Own Question
Juan Crespo
Juan Crespo, Tech Trainer
Category: Subaru
Satisfied Customers: 1522
Experience:  A.S.E. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European
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Have a 2008 wrk replaced compressor and now cooling fans 't

Customer Question

Have a 2008 wrk replaced compressor and now cooling fans don't come on. They do to cool the engine but when a/c is turned on they do not come on should they come on immediately and if so what could be the issue. Mechanic did a bridge relays working
Submitted: 1 year ago.
Category: Subaru
Expert:  Juan Crespo replied 1 year ago.

Hi there. Welcome to our site.

I'm sorry, but I'm a little confused on how specifically I can help you; can you clarify whether you're just seeking an educated guess on what could be wrong, or are you looking for technical guidance on how to fix the issue yourself – if the latter, must have tools and basic mechanical skills?

Customer: replied 1 year ago.
Educated guess. A/c blows cold but fans don't turn on. Relays work with manual bridge fan turns on for radiator when car gets warm just doesn't turn on for a/c
Expert:  Juan Crespo replied 1 year ago.

My educated guess would be a faulty A/C pressure transducer (or "triple switch"). It controls compressor and condenser fan operation based on refrigerant line pressure, regardless of engine temperature.

Best Regards.