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Discussion Starter · #1 ·
2007 jetta MK5 a/c compressor comes on only after engine heats up enough to turn on engine cooling fans. Once radiator cooling fans come on, then the compressor starts and the a/c works perfectly. Any ideas?
 

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Discussion Starter · #2 ·
Also wanted to mention its an 80 degree day and no cooling fans come on whatsoever at first. After engine gets hot, then both fans run fine.
 

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Hello 9 years later I have an answer so that anyone else reading this can have an idea. So your ac system needs to be cold okay? Now your engine cools the ac with the ac condenser sandwiched with the radiator. Get it yet? Those engine fans cool the condenser and the ac system providing cool air. No fans running = no cooling thru condenser.
 
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