A/C blows cold air on highway but in stop and go traffic it blows warm air

Tiny
DAVIDBRYANT36
  • MEMBER
  • 2006 FORD FIVE HUNDRED
  • 118,000 MILES
I am having trouble understanding why after charging system if I am driving down the road the A/C is working and yet if we are in town light to light it will blow hot air as we set there waiting on lights. I am thinking the fan after your video I watched, but not positive here.
Monday, July 16th, 2018 AT 10:45 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Yes, it sounds like the cooling fan is not coming on. Can you start the car (cold) and turn on the AC you should hear the fan kick on within one minute?

Here are the fan wiring diagrams so you can see how the system works.

Please report back.

Cheers, Ken
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Tuesday, July 17th, 2018 AT 1:53 PM

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