[Shotimes] re;A/C problems on a '95

[James White]

Been having a little trouble with the A/C on the '95MTX.

My Helms is a '93 and though it mentions A/C systems using R-134a, it
doesn't give any specifications.

Wondering what the full charge would be from a 25# vacuume?  And what the
high and low pressures should be?

I got back from Kansas City Thursday night after the "business trip from
HELL", and to add to my pain, the A/C on the '95 went further South and
hotter than Kansas City!  I left 100+ weather to get to 80+ weather, but no
A/C!

Pressure was zip, when I put my gauges on it today.  So, I attached my
niffty little air powered vacuume pump and sucked a 25# vacuume, threw a 12
oz. can of R-134a in and the pressure seemed to hold while I went to AZ to
get another 12 oz. can of R-134a and a 4 oz. can of sealer/dye.

I now have 44 degree cold air, which is about were it had been for quite
some time, but who knows how long this will last?

Where should I start looking for leaks?

What is the full charge of this system from a vacuume?

The Helms says that a '93 should take 40 oz +/- 2of R-12, but that seems
like a lot!  Could it be an error?

What should the high and low presure read?

I left it at 35# low and 270# high getting 44 degree air on a 88+ degree
day.

Assuming that I find the leak, repair it, what should the pressures be?

regards, Jim White - greensho@crown.net
Valparaiso, Indiana
'93  5 SPEED   283k few mods
'95  5 SPEED   256k lots of mods
"double clutch"  it's good for both you and your SHO