A/C intermittently stops blowing cold air?

Tiny
BLANCAESTELA944
  • MEMBER
  • 2007 HUMMER H3
  • 3.7L
  • 5 CYL
  • 4WD
  • AUTOMATIC
  • 145,000 MILES
So, basically, the A/C works, I had a leak and had to get a new compressor, and everything seemed fine until only a couple of days after the blend door actuator went out and I was hearing a clicking sound. After that the ac would sometimes blow cold but not always, I assumed it was because of that and once I got it replaced, I thought we were good, but it still only sometimes gets cold, there's nothing specific that makes it turn on that I know of, it's just by chance. I now realize that the blend door actuator probably had nothing to do with the problem, but it took me until now that it's fixed to realize it. I've checked to see if there's refrigerant thinking maybe there's a leak hut there isn't, so I don't know what it could be. I don't feel comfortable taking to the shop because I don't get taken seriously as a woman. Any help would be appreciated please, just need to know what I should be looking at and if anyone knows how expensive this could be, thank you.
Thursday, May 18th, 2023 AT 10:59 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 46,334 POSTS
This could be a defective temperature blend door actuator, or the A/C compressor is going out. To be sure we can check the A/C compressor by observing the high and low side pressures.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

This guide may help as well:

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Here is how to replace the A/C compressor step by step with instructions in the images below for your car:

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

Check out the images (below). Please let us know what happens.
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Friday, May 19th, 2023 AT 11:54 AM

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