Front A/C not blowing only cool air not cold

JURIBE0713

MEMBER
2002 CHEVROLET SUBURBAN
3.5L
V8
4WD
AUTOMATIC
140,000 MILES

Today I did a recharge and it seem to work so the back A/C is blowing cold air then the front air.
The front air getting cold but not too cold. I already change the blend actuator. So I don't know what else that needs to be done. If anyone knows something let me know please. Thank you

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good afternoon,

Can you give me the high and low side reading of the A/C system with the engine running and the A/C on?

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

I need to see them in order to see if the system is working properly.

How much Freon did you install?

Roy

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Wednesday, April 29th, 2020 AT 9:45 AM

JURIBE0713

MEMBER
2 POSTS

Thanks you for getting back to me.
I installed 20oz Freon into the truck I used the A/C pro can with the hose.
How can I check the reading of the high and low?

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Wednesday, April 29th, 2020 AT 11:58 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

You need a set of pressure gauges. You can get a cheap set at harbor freight.

https://www.harborfreight.com/ac-r134a-manifold-gauge-set-62707.html?_br_psugg_q=ac+gauge

Once you get them, hook them up and watch the readings when you turn on the A/C system. Tell me or take a picture and post it here so I can see the readings.

I may be either low or too much Freon in the system.

Roy

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Wednesday, April 29th, 2020 AT 12:05 PM