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No cold air after fixing blower

jimmy_the_dude on Sat August 01, 2009 1:41 PM User is offlineView users profile

Year: 2005
Make: Chevy
Model: Equinox
Engine Size: V6 3.4L
Refrigerant Type: R134a
Ambient Temp: 85F
Pressure Low: >100psi
Pressure High: -
Country of Origin: United States

Hi,

I am a big DIY person. I have intermediate mechanical skills specializing in electricity as I am a full time Electronics Technician. Needless to say, my A/C skills are very limited.

On my '05 Chevy Equinox, I had an intermittent A/C blower problem over the course of a month until one day it stopped working completely. So for a couple of weeks until I had time to try and figure out the problem, my wife and I would leave the blower switch on enabling the compressor to run so that when we are driving down the road, we can still feel a slight bit of cool air coming out the vents from the small amount of ventilation you get driving down the road.

So when I found time to work the issue, I bought a month of tech. data from eautorepair.net and got the schematics to my HVAC system. The problem for the blower turned out to be a lose connection on a connector plug behind the dash. The pin the blower power ran off of had melted and let the pin slide backwards. What caused it to overheat so much is still a mystery. However, I cleaned the connector up, pulled the pin back through snuggly, and connected it back together. Blower fan fixed.

However, now I don't have any cool air. This happen the day before I started working on the electrical problem. We noticed the cool air had stopped coming out the system. Also, we noticed some frost on one of the pipes.

Well like most people, no cool air = low refrigerant. So I went to the local Advanced Auto Parts and picked me up a re-charge can with a pressure meter. I ran my car for 3 minutes with the A/C on high, compressor was cycling with the clicking noise, and I put the pressure hose onto the system. It read over 100psi and was in the Red. According to the can, I'm not suppose to attempt re-charging as there is something else wrong.

Before I had all these problems, my A/C worked perfectly. What has caused my cooling to stop from leaving my A/C Compressor on while my blower did not work?

Your help with this is greatly appreciated! Thanks!

Jimmy

TRB on Sat August 01, 2009 2:18 PM User is offlineView users profile

First off get a real set of gauges on the vehicle which will provide an accurate reading for both the low and high side of the system.

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jimmy_the_dude on Sat August 01, 2009 2:33 PM User is offlineView users profile

Will do!

In the meantime, does the fact that my blower being out while my compressor still ran have anything to do with my problem? Ever heard of anything like this. Just wondering if the cooling problem is completed isolated from my blower problem or my blower problem brought on my cooling problem....

Edited: Sat August 01, 2009 at 2:57 PM by jimmy_the_dude

TRB on Sat August 01, 2009 3:01 PM User is offlineView users profile

You could have burned up the clutch and or compressor do to it cycling constantly.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

jimmy_the_dude on Mon August 03, 2009 6:56 AM User is offlineView users profile

For some reason, the A/C clutch fuse was blown. After changing that, everything works fine. Just was strange how the cool air stopped coming out around the same time I finally figured out my blower problem.

Thanks for your help!

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