Originally Posted by flyballdog
The ports you need are both there. The orfice tube is located in the line between the 2 ports. Low side pressure should be between 30 to 40 lbs with A/C turned on. Do not overcharge as 134A will not be as cold when overcharged where as R12 will get colder the more you ad. Your inside vent temp when A/C on with fan on low should be about 34*.
Hope this helps.
I hope to not highjack this thread but noticed you mentioned a vent temp of 34*.
I am having issues with my vent temps not getting low enough.
I have had the system gone through and the correct 2.2 lbs. of gas is present.
But vent temps remain around 60* at idle (granted it has been blistering hot here in the midwest lately).
Going down the highway for 10 minutes or so temps slowly drop to close to 50* through
the top vents.
If I choose to recirculate the air it will drop to 44* or so. And lastly when the above is
done and I switch to a combo top vent and feet it further drops to closer to 40*
Any slowing down or stop and go driving and vent temps start raising quickly.
Any ideas about what is going on? My local guy suggested the compressor may be on
its way out and wasn't to sure about that it seemed to me.
So I continue to drive it (02 Bonneville SE 78K miles) and wish for those above stated 34* temps
and wish I didn't have to drive 15 minutes to finally get some half way cool air blowing.
Thanks for your replies...
St. Louis area