Air conditioning - Fuelly Forums

Click here to see important news regarding the aCar App

Thread Tools Display Modes
Old 07-22-2011, 08:02 AM   #1
Registered Member
theholycow's Avatar
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Question Air conditioning

Ok, my 1980 Buick's air conditioning doesn't work and I might like to use it a little bit. I'm sure it's a matter of dried seals and rotted soft parts from disuse...the car sat unused for years. I had it charged maybe 5 years ago and it worked for that summer but I'd rather not keep leaking refrigerant.

Where do I begin? I imagine there are some common failures I should work on before even considering pressure testing and getting it charged.

This sig may return, some day.
theholycow is offline   Reply With Quote
Old 07-22-2011, 08:48 AM   #2
Registered Member
GasSavers_Erik's Avatar
Join Date: Nov 2006
Posts: 1,027
Country: United States
Re: Air conditioning

Maybe you can take an easily accessible joint loose and inspect the o-ring there. If it is cracked, then all of the o-rings will likely need to be replaced.

If that o-ring looks good, then unfortunately it might be the compressor seals...

It is too bad that there isn't a mix of cheap gas and dye that could be put in a system to easily check where the leak is...

Some people say that all of the o-rings need to be replaced when converting to R132, but I had good luck on my 94 Nissan 240, with just using a R12 to R132 retrofit kit (which was just a fill valve adapter). I have to add 1 can every 2 years and I feel that is an acceptable rate of loss.

GasSavers_Erik is offline   Reply With Quote
Old 07-22-2011, 11:48 AM   #3
Site Team / Moderator
Jay2TheRescue's Avatar
Join Date: Sep 2008
Location: Northern Virginia
Posts: 4,731
Country: United States
Location: Northern Virginia
Re: Air conditioning

#1. take all the fittings apart, and replace the O rings with new ones. Buy the green ones, they are compatible with newer refrigerants. It doesn't hurt to slop a little thread locker on them before putting it back together. Guaranteed it won't leak unless you have a leak in a physical component.

After that is done, hook it to a vacuum pump and bring it down, then see if it maintains the vacuum. If it does then you have no leaks, Charge it up. I recommend one of the R-12 replacements such as "Freeze 12" in your car. You will not get satisfactory performance out of R-134A in that vehicle. Freeze 12 is a mix of 134A and Propane, and it gets insanely cold, works better than R-12 ever did.

Jay2TheRescue is offline   Reply With Quote
Old 03-22-2015, 11:02 PM   #4
Out of Fuel
Join Date: Mar 2015
Posts: 1
Country: United States
Air conditioning

When you want to troubleshoot any old ac unit, a few steps are mandatory. A common cause of an ac unit not functioning is due to the accumulation of mold in the evaporator core. Possibly, a hose may also have gone loose. You should get your ac service done after regular periods to ensure its smooth operation
myacandheat12 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Incorrect Milage Calcuatlion PatM Fuelly Web Support and Community News 4 07-17-2009 07:21 PM
Gallons per Mile? nerb Fuelly Web Support and Community News 1 11-12-2008 03:33 AM
Honda Civic 120k Maintenance KrazyDawg General Maintenance and Repair 4 03-18-2008 08:49 PM
Timing chain and FE bowtieguy Experiments, Modifications and DIY 22 11-11-2007 08:48 AM
Throttle spring...pedal vs RPM? ZugyNA General Fuel Topics 17 08-01-2006 04:17 PM

» Fuelly iOS Apps
» Fuelly Android Apps
Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 04:35 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.