A/C not working

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Jul 7, 2017 | 08:05 PM

KDAVID1

Thread Starter

Logistics Pro

Joined: Feb 2013

Posts: 4,073

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From: TX

A/C not working

Well I suppose it's a good thing I haven't had to post a problem in a long time.
Life has been very busy which sucks.....hate not being active on here.....anyway. It's getting hot here and my account doesn't want to blow cold. I went to add some freon today but it was full (scared I had a leaky condenser) Other than blowing hot it seems the compressor clutch cycles every few seconds and only for a few seconds. Any ideas??

Jul 7, 2017 | 10:07 PM

Yahiko

Fleet Owner

Joined: Apr 2012

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From: Spanaway

Scan to see if the PCM has any stored codes for the A/C system.

Jul 8, 2017 | 07:57 AM

Macrosill

Laughing Gas

Joined: Nov 2014

Posts: 765

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From: Long Island, NY

Do you have a set of gauges? Pressures usually tell the tale on an A/C system. If there are no leaks and the system is not overcharged then maybe the pressure switch went bad?

Jul 8, 2017 | 08:12 AM

KDAVID1

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Logistics Pro

Joined: Feb 2013

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From: TX

Didn't know the ac could throw a code....I don't have gauges but can get that checked. I'll take a look at both. As usual..thanks!

Jul 8, 2017 | 08:34 AM

69cj

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Joined: Jul 2005

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From: Middle Tn.

Quote:

Originally Posted by KDAVID1

With out gauges you have no idea wether the freon is full, over filled or low. Cycling could be either low or high head pressure.

Jul 8, 2017 | 10:22 AM

KDAVID1

Thread Starter

Logistics Pro

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From: TX

Gotha....was using to gauge on the can....was in range...on the can that is.
When to compressor would cycle it would go to range then back to zero?

Jul 8, 2017 | 11:46 AM

Macrosill

Laughing Gas

Joined: Nov 2014

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From: Long Island, NY

That gauge on the can attempts to show the low pressure side. I would not trust it much. I did that once and the system started to vent when the compressor turned on. Overcharge and the gauge on the can was in the green.

I just recharged my Suburban. Bought the gauges and vac pump. Changed the receiver/drier and orifice tube. Vac'ed the system, charged based on the proper charge for the vehicle and I am blowing in the low 40 degree range consistently .

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Jul 8, 2017 | 04:03 PM

Macrosill

Laughing Gas

Joined: Nov 2014

Posts: 765

Likes: 5

From: Long Island, NY

Cool! No pun intended. lol
It was about 90 today, had the a/c on recirc and it got down to 38 degrees.

Jul 8, 2017 | 05:27 PM

#10

KDAVID1

Thread Starter

Logistics Pro

Joined: Feb 2013

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From: TX

Man I don't think mine has ever been like that.
Guess it pays to vacuum and refill properly. I'll know tomorrow if it still holds.
I'm optimistic.

Jul 8, 2017 | 06:14 PM

#11

69cj

Hotshot

Joined: Jul 2005

Posts: 13,834

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From: Middle Tn.

Quote:

Originally Posted by KDAVID1

Too many people trust the gauges on the self help cans. Some times it works out. Slug a compressor and you'll wish you'd paid a pro. You need to know the low and high side to see what's really happening.