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AC erratic

Tiny
KTHSAN
  • MEMBER
  • 2004 CHEVROLET TAHOE
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
With the AC on fan speed 5 it runs fine then stops blowing. I then drop the fan to 4 and it will work fine. After a short time it starts blowing hot air, even after recharge. Turn everything off including the vehicle wait a few minutes and start the vehicle up and the AC will run fine for a little while and then the problems starts all over again. Some days it runs without an issue.
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Tuesday, July 3rd, 2018 AT 10:24 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening.

From your description, it sounds like you need a blower resistor for the fan. That will keep the blower operating.

As far as the AC, do you have gauges to check the pressures?

Roy

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak
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Tuesday, July 3rd, 2018 AT 4:51 PM

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