Automotive Air Conditioning Information Forum (Archives)

Provided by

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

Archive Home

Search Auto AC Forum Archives

No valve in high line?

danf01 on Sat June 07, 2008 10:15 AM User is offline

Year: 2001
Make: Pontiac
Model: Grand Am
Engine Size: 2.4L
Refrigerant Type: 134A

Hey guys, after adding a little 134 on this car I noticed that when I removed my QD from the high line gas was coming out. Didn't seem at 200-250psi but it was clearly coming out. Does a cap w/a O-ring seal this thing?

GM Tech on Sat June 07, 2008 10:57 AM User is offline


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......

danf01 on Sun June 08, 2008 5:32 PM User is offline

Theres no Schrader valve in the high side port?

Only the cap w/washer is the only seal?

danf01 on Tue June 10, 2008 4:40 PM User is offline

anybody? Hard to believe theres no Schrader valve in a high side port

01 Pontiac GrandAM 4 cyl

Chick on Tue June 10, 2008 5:57 PM User is offlineView users profile

On GM cars with 'replaceable" high side ports, the shrader valve is replaced with a "teflon" ball, but it seals as a shrader valve would. I usually change them with an ac service because of having them stick open. This pic is from a Ford, but should look the same inside
To change the "shrader valve" you would change the whole port..

Email: Chick


Freedoms just another word for nothing left to lose

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.