AC system rebuild, 2001 suburban
Oct 12, 2014 | 05:53 AM
#11
Thread Starter
TECH Fanatic
Joined: Jun 2011
Posts: 1,292
Likes: 5
From: Houston
Oct 13, 2014 | 08:08 AM
#12
Staging Lane
Joined: Oct 2012
Posts: 55
Likes: 2
This was the compressor I bought when I rebuilt the tahoe's ac system.
It's had two full Texas summers on it now and still going strong.
One thing I make sure to do is get the front blowing cold before kick on the rear and when I first kick on the rear the front is set to 1. Once its all going cold, adjust to your liking.
Also, how are flushing the lines? I used this: http://www.autozone.com/autozone/acc...estid=20056945 along with this
Another thing. In the rear AC, there is a small screened filter that needs to be cleaned.
It's had two full Texas summers on it now and still going strong.
One thing I make sure to do is get the front blowing cold before kick on the rear and when I first kick on the rear the front is set to 1. Once its all going cold, adjust to your liking.
Also, how are flushing the lines? I used this: http://www.autozone.com/autozone/acc...estid=20056945 along with this
Another thing. In the rear AC, there is a small screened filter that needs to be cleaned.
Last edited by akcooper9; Oct 13, 2014 at 08:19 AM.
Oct 16, 2014 | 06:15 PM
#13
Thread Starter
TECH Fanatic
Joined: Jun 2011
Posts: 1,292
Likes: 5
From: Houston
This was the compressor I bought when I rebuilt the tahoe's ac system.
Amazon.com: Denso 471-0316 New Compressor with Clutch: Automotive
It's had two full Texas summers on it now and still going strong.
One thing I make sure to do is get the front blowing cold before kick on the rear and when I first kick on the rear the front is set to 1. Once its all going cold, adjust to your liking.
Also, how are flushing the lines? I used this: A/C Pro / 1 qt. flush and clean - Not for Hybrid vehicles with electrical driven compressors (CQS-11) | A/C System Cleaner | AutoZone.com along with this Amazon.com: Mastercool (91046-A) Silver A/C System Flush Kit: Automotive
Another thing. In the rear AC, there is a small screened filter that needs to be cleaned.
Amazon.com: Denso 471-0316 New Compressor with Clutch: Automotive
It's had two full Texas summers on it now and still going strong.
One thing I make sure to do is get the front blowing cold before kick on the rear and when I first kick on the rear the front is set to 1. Once its all going cold, adjust to your liking.
Also, how are flushing the lines? I used this: A/C Pro / 1 qt. flush and clean - Not for Hybrid vehicles with electrical driven compressors (CQS-11) | A/C System Cleaner | AutoZone.com along with this Amazon.com: Mastercool (91046-A) Silver A/C System Flush Kit: Automotive
Another thing. In the rear AC, there is a small screened filter that needs to be cleaned.
My main concern is knowing how to put how much oil in what places? If I take it to a shop, can they put in the right amount of freon pre-mixed with the oil? Not sure how that works.
Oct 17, 2014 | 12:59 PM
#14
Staging Lane
Joined: Oct 2012
Posts: 55
Likes: 2
Did you clean the screen filter in the rear ac? I missed it the first time I went to have my ac charged and I wasnt getting 'cold cold' air. So the shop evac'd the AC and I went home and swapped out the rear expansion valve and thats when I found the screen filter. I cleaned that as well.
Aug 17, 2015 | 04:53 PM
#15
Registered User
Joined: Aug 2015
Posts: 2
Likes: 0
2001 suburban a/c
I just did the same thing except for condenser. It's August and 90 degrees in NC. I am getting same 56-58 at vent. I did find that removing entire Rear a/c cartridge after disconnecting coolant and a/c lines allowed for ease of disassembly and change out of expansion valve.
I bought the R134a Freon at Walmart. They had 12oz bottles for about $7 each. Next, to ensure I got the proper amount of Freon charge (48oz specification), I got a food scale and measured exactly how much from each bottle I put into the system. Of the 5 bottles I bought, 3 were at 12oz, and two were at 10oz of net fluid.
I'm confident that the scale is accurate within +/- 1oz. I tested it with various lead fishing weights in the sports/outdoor section at Walmart.
Here are the gauge pressures after I got 48oz of fluid into the system. This was at around 90-F with high humidity.
The lowest temperature at the vents was a steady 58-F. Considering how hot and humid the weather is right now, I think that is the best I can do. The system now feels like a new OEM system and the performance is excellent. I am extremely pleased with the results.
Thanks for reading, hopefully this helps some of you out there.
I'm confident that the scale is accurate within +/- 1oz. I tested it with various lead fishing weights in the sports/outdoor section at Walmart.
Here are the gauge pressures after I got 48oz of fluid into the system. This was at around 90-F with high humidity.
The lowest temperature at the vents was a steady 58-F. Considering how hot and humid the weather is right now, I think that is the best I can do. The system now feels like a new OEM system and the performance is excellent. I am extremely pleased with the results.
Thanks for reading, hopefully this helps some of you out there.
Aug 19, 2015 | 12:35 PM
#16
Staging Lane
Joined: Oct 2012
Posts: 55
Likes: 2
RT did you ever solve your AC problems?
Aug 19, 2015 | 04:06 PM
#18
Registered User
Joined: Aug 2015
Posts: 2
Likes: 0
I'm calling it "good" at this point. This gas hog sits most all the time until I need to pull camper or haul a posse. I need to get it out and drive it around on a hot day to assess. But it was humid and hot last weekend when we finished and it all seemed good. Very happy with performance to this point.
I just did the same thing except for condenser. It's August and 90 degrees in NC. I am getting same 56-58 at vent. I did find that removing entire Rear a/c cartridge after disconnecting coolant and a/c lines allowed for ease of disassembly and change out of expansion valve.
Nov 19, 2016 | 06:48 AM
#19
Thread Starter
TECH Fanatic
Joined: Jun 2011
Posts: 1,292
Likes: 5
From: Houston
Hey, sorry for the very late reply. No, I have not fixed the AC system yet. The truck has been sitting in storage for almost 2 years while I'm on assignment in Norway.
I plan to gut the system "again" when I get back to Houston. Hopefully sometime in late 2017 or early 2018.
Kind regards
I plan to gut the system "again" when I get back to Houston. Hopefully sometime in late 2017 or early 2018.
Kind regards
Thread
Thread Starter
Forum
Replies
Last Post
SLOPONY
GMT 800 & Older GM General Discussion
20
Oct 18, 2016 06:05 AM
FlowmasterMufflers
GM Engine & Exhaust Performance
0
Aug 28, 2015 10:58 AM
FlowmasterMufflers
GM Engine & Exhaust Performance
0
Aug 14, 2015 12:47 PM
rojeho
GMT 800 & Older GM General Discussion
4
Aug 8, 2015 07:20 PM
