Automotive Air Conditioning Information Forum (Archives)

Provided by www.ACkits.com

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

Low side high and same as high side

EagleMark on Sat August 07, 2010 8:14 PM User is offlineView users profile

Year: 1992
Make: Oldsmobile
Model: Delta 88
Engine Size: 3.8
Refrigerant Type: R12
Ambient Temp: 83
Pressure Low: 100
Pressure High: 100
Country of Origin: United States

Had my A/C blowing cold but had a leak at an O ring at the condenser. Fixed that and vacuumed, recharged but the low side just went right up to 75-100 and same as the high side. Using gauges, high side closed and low side open. I have a recovery machine and supply of R12 I have been protecting for years to take care of my rigs.

So what happened?

-------------------------
1994 Buick Raodmaster Estate Wagon White Woodgrain. My four door Corvette Wagon! 1990 Chevy Suburban Silverado 5.7L 2wd and stuff! R12 Still Works!

Addicted and Obsessed with Fuel Injecting Anything!
[URL="http://http://www.eagle-mark.com/Forums/"]Shared BIN files, Definitians and Wiring diagrams![/URL]

GM Tech on Sat August 07, 2010 10:13 PM User is offline

If compressor is running AND gages are closed-and you are sure you have an Orifice Tube in it--then your pump is toast- be sure of the 3 qualifiers I just cited.....

-------------------------
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

EagleMark on Sat August 07, 2010 11:11 PM User is offlineView users profile

Bingo! The O ring leak I fixed was also a condensor change while I had it apart. Didn't think much about it as it was just a part change. The condensor was bent and lots of flat fins from a coyote... after I posted I thought about it and pulled the line that has the dimples to hold the orifice tube and guess what? None! So I looked in the old condenser and there it is. Stuck in there so hard I can not get it out. So I have one ordered along with a accumulater or drier whatever it's called on this car.

It is supposed to be in the line correct? Dimples are there. Can't understand how it got wedged in the condenser about 6 inches from where it's supposed to be?

-------------------------
1994 Buick Raodmaster Estate Wagon White Woodgrain. My four door Corvette Wagon! 1990 Chevy Suburban Silverado 5.7L 2wd and stuff! R12 Still Works!

Addicted and Obsessed with Fuel Injecting Anything!
[URL="http://http://www.eagle-mark.com/Forums/"]Shared BIN files, Definitians and Wiring diagrams![/URL]

EagleMark on Sun August 08, 2010 4:48 PM User is offlineView users profile

Put the new orifice and accumulator in today and have ice cold air, wish I could find my vent thermometer... I have frost from the orifice to the firewall.

What would be optimal low side and high side pressures for this car?

-------------------------
1994 Buick Raodmaster Estate Wagon White Woodgrain. My four door Corvette Wagon! 1990 Chevy Suburban Silverado 5.7L 2wd and stuff! R12 Still Works!

Addicted and Obsessed with Fuel Injecting Anything!
[URL="http://http://www.eagle-mark.com/Forums/"]Shared BIN files, Definitians and Wiring diagrams![/URL]

fonebone on Sun August 08, 2010 8:52 PM User is offline

Don't sweat the gage readings--If you continue to have ice cold air as you stated, you've done well, and your readings will be fine---- they will of course vary, depending on humidity and temp-- just enjoy it!

EagleMark on Sun August 08, 2010 10:21 PM User is offlineView users profile

Quote
Originally posted by: fonebone
Don't sweat the gage readings--If you continue to have ice cold air as you stated, you've done well, and your readings will be fine---- they will of course vary, depending on humidity and temp-- just enjoy it!That sounds to easy!

Low side is around 30 and high side 175 at idle on a 85 degree day.



-------------------------
1994 Buick Raodmaster Estate Wagon White Woodgrain. My four door Corvette Wagon! 1990 Chevy Suburban Silverado 5.7L 2wd and stuff! R12 Still Works!

Addicted and Obsessed with Fuel Injecting Anything!
[URL="http://http://www.eagle-mark.com/Forums/"]Shared BIN files, Definitians and Wiring diagrams![/URL]

Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.