Cadillac Owners Forum banner

1 - 3 of 3 Posts

·
Registered
99 STS
Joined
·
93 Posts
Discussion Starter #1
I'm frustrated! I have 99 STS with 149,000 miles. No current codes and no history codes. 3 days ago, freon was 1.5# low. I went to my friend's shop. He used his machine and pulled the .5 out. Vacuumed etc. Put 2# back in (including .5 that was saved) and dye. Today it was all gone again. We used sniffer and black light and can't find any trace of leak. I would appreciate your help once again.
 

·
Super Moderator
White Diamond '03 DHS (with DTS floor shift)
Joined
·
86,781 Posts
Leaks are harder to detect in the evaporator.
That said, that's a pretty big leak. Should be easy to find with a dye and sniffer.
 

·
Registered
1999 Deville Base; 2001 Seville SLS
Joined
·
68 Posts
My experience with sudden-occurring "big" leaks are all compressor shaft seals. OK, there were only two, and they were Fords, but still...
UV nor sniffer didn't pick up either one.
 
1 - 3 of 3 Posts
Top