I need help finding the low pressure valve for recharging the AC on my 1991 Voyager. At first I thought it was the one right in front of the firewall, but when I tried to recharge, nothing would go in. Then, after talking to my father in law (owned the van first) he said that that was not the correct low pressure valve, but there was another one somewhere else under the engine. I tried to find it, but to no avail...Can somebody help me locate this, or offer any assistance in recharging the ac?

 

first of all that old of a system will be R12 hard to find parts of that system ne more . If u want that u might as well convert it over to the 134a system the kits will give u new ports inorder to charge the sytem up wile oil and freeon.

 

I already did the conversion to the 134 fittings...just having a problem finding the low side that is not the obvious looking one right in front of the firewall.

 

if u did the conversion then u should have replaced the ports then u should know where it is unless u changed the location of it when u did change the ports. Fallow the lines all over thats all that u can do.