Quote:
Originally Posted by jimmillion
@ cheapez are there devices that you can use to suck the air out before charging or do you still have to take it to a shop? |
The shop uses a pump to suck air out of the system before they charge it with new R134a. The pump will not just suck air out of the system, it create low vacuum in the system (-5 to -15 psi I think).
There maybe another way, less expensive way to suck air out of the system. Harbor Freight might sell these tools. Be sure to use coupons when you buy anything at Harbor Freight.
I replaced my condenser last year, and then charged the system without sucked the air out. It worked great for the whole summer.
If you are going to charge the system, charge at the low pressure side (There is a valve on it). Your engine must be running, and your AC is on when you are charging the system.