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There are days where the AC blows cold but, I could feel it slowly warming up

Tiny
KRITICALCHRIS
  • MEMBER
  • 2010 ACURA TL
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 116,500 MILES
Some days I'll drive and it blows cold all the time and there are days where it blows cold but, I could feel it slowly warming up and then getting cold again. Sometimes it only blows warm air. Sometimes if I turn the the A/C off and on it will begin blowing cold. A shop just did an evacuate and recharge and the problems remained that very same day. Any idea what this could be?
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Monday, September 30th, 2019 AT 10:06 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,110 POSTS
Hello,

It sounds like the compressor is going out and losing the high side pressure. Tto tell for sure we would need to connect a set of gauges to check the pressures or feel the large refrigerant tube exiting the firewall to see if it is cold. If it is cold I would replace the ambient temperature sensor.

This guide can help as well:

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

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

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Tuesday, October 1st, 2019 AT 1:35 PM

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