1994 Saturn SL2 Overfilling AC

CHUCKIEG

MEMBER
1994 SATURN SL2
4 CYL
FWD
AUTOMATIC
260,000 MILES

I think I have overfilled my ac. I first added a full can of R134A and the system performed well, but seemed like it could've used more. So I took a second can and commenced to add it, after about half a can it stopped. As if it was full. I followed the directions, car running with ac on while I was filling it. Now the problem is, the inside fan runs but NO cold air. My thought process is that I probably overfilled it and there is a fault switch that automatically cuts the system off when it has TOO much freon. How can I bleed off some of the freon and reset the system so that it will work?

Thank you in advance

3 Replies

MHPAUTOS

MECHANIC
31,938 POSTS

Refrigerant gas must be recovered via a specialist recovery pump, as releasing refrigerant any other way is extremely dangerous, the correct volume of gas can then be measured and installed.

Mark (mhpautos)

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Tuesday, June 29th, 2010 AT 8:58 AM

CHUCKIEG

MEMBER
3 POSTS

Thanks for the response. Can I use an a/c vaccuum pump to empty the system and re-try filling it? If I use a vacuum kit, how does it work? Also, where exactly is the high low/ switch which is screwed on the a/c line by the underhood fuse box and how do I reset it?

Was this

answer

helpful?

Yes

No

Tuesday, June 29th, 2010 AT 9:39 AM

CHUCKIEG

MEMBER
3 POSTS

I fixed the problem, come to find out. The system had a leak. I bought a can of R134A sealant, installed it, then waited to see if there was a leak. Sure enough, it was on the low side line that bolts to the compressor. I wiped it clean, waited to see if it leaked anymore. Nothing. I proceeded to fill it with a can of R134a refrigerant, it took about 15 or so minutes to completely fill. I now have a car with COLD AC.

Was this

answer

helpful?

Yes

No

Tuesday, June 29th, 2010 AT 1:02 PM