A/C

161,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC
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ALFINSO
  • MEMBER
  • 1 POST
My A/C blows cold while driving, but warm when it is idling.
Aug 5, 2017 at 6:07 AM
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HARRY P
  • ✓Experienced Mechanic
  • 2,292 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
Aug 5, 2017 at 2:07 PM
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