A/C on automobile

sisdavid

New Member
Mar 31, 2008
257
0
0
Daytona Beach
Why didn''t anyone tell me that the guages are to have the valves screwed shut to get an acurate reading? LOL, My 95 Lincoln has a reading of 0 on the low side and 100 on the high side, the manual says it should be Low 22-47 and the high should be 160-245. My other car not a lincoln but still need help is a 95 T-birds pressuer is Low side 25-50 guage jumps back and fournth with compressor coming on, and 75-100 on high side guage jump back and fourth with compressor running. The manual says it should be Low side 25-50 and High side 75-100. Any help is greatly appreciated. I think I might be able to do this myself if I have help. Please, I have a lot of free time now that the economy is so crummy.
 

Dave31

Moderator
Staff member
Mar 1, 2008
11,204
29
38
Aztlán, Arizona
Both are low on freon, the gauges jumping around is due to the low pressure and pulsation of the compressor. Once filled to proper level that should go away.
 

Goat Herder

Gutter Rider
Apr 28, 2008
6,248
11
38
N.M.
Don't store your gauges with the knobs in the shut off posistion it leaves an indentation on the teflon seals, prematurly wearing them down.