AC problem

Tiny
HARLEY1441
  • MEMBER
  • 2003 JAGUAR X-TYPE
  • 3.0L
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 140,000 MILES
My air conditioner is cold when I drive fast and warm when I drive slowly or idle. Does anybody know what could be the problem and how to fix it? Thank you!
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Thursday, May 5th, 2016 AT 5:38 PM

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Tiny
ED-WEEZY21
  • MECHANIC
  • 248 POSTS
The ac will always work better the faster the vehicle moves strictly based on the fact that it runs off of the drive belt. The drive belt spins faster the the vehicle moves faster causing the ac compressor pulley to spin faster. When you slow down or idle, the opposite happens. Everything slows down and the ac compressor doesn't move as fast. I would bring the vehicle to an AC professional to check the pressures to see if you are low on refrigerant and to ensure that you don't have any leaks. If everything checks out fine, it may be a defective ac compressor. Also note that if a vehicle is overheating, the computer will shut down the ac compressor if its on in order to decrease the load thats being out on the engine. Make sure the coolant level is good and there are no leaks as well. Best of luck.
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Thursday, May 5th, 2016 AT 5:48 PM
Tiny
ED-WEEZY21
  • MECHANIC
  • 248 POSTS
Put on the engine*
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Thursday, May 5th, 2016 AT 5:49 PM

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