Cooling fan does not come on

Tiny
URSULOROBLES
  • MEMBER
  • 2012 KIA SEDONA
  • 2.9L
  • V6
  • 2WD
  • AUTOMATIC
  • 110,000 MILES
A/C does not cool.
Monday, September 30th, 2019 AT 3:53 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Welcome to 2CarPros.

This could be the result of a few things. First, are you certain that the AC system is fully charged? If it fails to actuate the compressor, the fan won't turn on. Here are a couple links. The first one discusses common issues with AC not working. The second explains how to charge the system.

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

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

Let me know if that helps or if you have other questions.

Joe
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Tuesday, October 1st, 2019 AT 6:27 PM
Tiny
URSULOROBLES
  • MEMBER
  • 47 POSTS
With engine running, the low side is high and high side is low, when A/C is on, the compressor clicks on and low pressure goes down to 100, but the fan does not come on. Therefore the A/C compressor disengages and vehicle gets hot.
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Friday, October 4th, 2019 AT 6:41 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Welcome back:

If the low side goes down to 100, that is extremely high. The idea that the low goes high and the high goes low, I suspect the compressor is bad. If the low side goes down to 100 where does it start?

Joe
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Friday, October 4th, 2019 AT 9:24 PM
Tiny
URSULOROBLES
  • MEMBER
  • 47 POSTS
The A/C low side is over 100, compressor clicks on with no cooling fan, and low side pressure goes down to 100 and compressor shuts off.
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Sunday, October 6th, 2019 AT 12:25 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Welcome back:

I suspect either the system is either over charged (high pressure switch turning it off) or the compressor is bad. Even under extreme conditions, for example at 110°F low pressure should be under 60. Could you have over charged it?

Let me know.

Joe
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+1
Sunday, October 6th, 2019 AT 7:56 PM

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