Hi all. Hope I'm posting this on the right area of the forum. If it's not, please excuse a first-timer's mistake.

I have a 1993 audi 100 cs quattro station wagon which is not blowing cold air. Can't find the low pressure recharge port anywhere. Can someone help me out? Any and all advice will be greatly appreciated, please accept my sincere thanks in advance of your kind responses.

 

You may only have a high pressure port.

 

Yeah, did some homework and the system only charges on the high side. Anyone had any experience converting a 100 quattro to 134a? Again, thanks in advance of your reply.

 

you could try to remove the low pressure switch on rihgt side under the coverin engine compartment