Air conditioning Recharge

Hey everyone. New to the forum. Anywhere you can go online to look up info on recharging your air conditioning? I have a '97 GTP, 176K miles runs good. Turned on the air and it's just warm. Where is the low intake valve on these things? I don't want to screw it up. Everything is still original parts. :grinyes:

It's been a great car. Give me a little help boys....

ppr

Hey everyone. New to the forum. Anywhere you can go online to look up info on recharging your air conditioning? I have a '97 GTP, 176K miles runs good. Turned on the air and it's just warm. Where is the low intake valve on these things? I don't want to screw it up. Everything is still original parts. :grinyes:

It's been a great car. Give me a little help boys....

ppr

Low pressure port is located at the firewall. Can't miss it. Just get a recharge kit with a gauge.

Start by putting in a lb of R134a. If the system is out you'll need it to get the lo/hi pressure switch engaged so the compressor kicks in.

Welcome to AF!

How would I get that hi/lo switch engaged?

How would I get that hi/lo switch engaged?

You can't jump it like in the older AC systems. Add 134a refrigerent until the compressor starts working is all you can do. It may take a while so don't give up. Put the AC on Max with hi-blower speed and take rpms up to around 1000 -1500. Hopefully you still have some old refrigerant and enough to get over the low pressure threshold.