A/C

Tiny
ALFINSO
  • MEMBER
  • 2004 FORD EXPEDITION
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 161,000 MILES
My A/C blows cold while driving, but warm when it is idling.
Saturday, August 5th, 2017 AT 1:07 PM

1 Reply

Tiny
HARRY P
  • MECHANIC
  • 2,293 POSTS
Usually this happens when the air conditioning compressor is starting to fail. They get weak and need the engine running faster and harder to get the job done. Check these guides out, they explain a few things about A/C:

https://www.2carpros.com/articles/how-a-car-air-conditioner-works

https://www.2carpros.com/articles/replace-air-conditioner-compressor

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
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Saturday, August 5th, 2017 AT 9:07 PM

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