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2001 Cadillac Seville DTS
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Hello,
Didn't read this forum first and when I removed the radiator from my 2001 Seville STS I fully removed the a/c condenser. Can anyone tell me the steps to evac the system?
Thanks in advance.
Kenny
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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86,778 Posts
:welcome:

I created a new thread for you rather than hijack an old non-related one.

You need to connect an A/C vacuum pump to the system and draw a good vacuum for about an hour before recharging the system.

P.S.
Update your profile. A DTS is a Deville. Perhaps you meant Seville STS or SLS.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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19,245 Posts
Hello,
Didn't read this forum first and when I removed the radiator from my 2001 Seville STS I fully removed the a/c condenser. Can anyone tell me the steps to evac the system?
Thanks in advance.
Kenny
-------------------
connect an AC manifold set to the HIGH PRESSURE and LOW PRESSURE ports of the AC system -

connect a vacuum pump to the yellow hose of manifold set -

turn on the vacuum pump -

open BOTH the HIGH and LOW side valves -
and let the vacuum pump run for at least one hour -
the longer - the better - you will get close to 30"/Hg

close BOTH the HIGH and LOW side valves - turn off the vacuum pump -

let the system set for at least 15 minutes -
the system should maintain the vacuum -

if it does - you are ready to recharge it -

if the vacuum bleeds off -
there is a leak that must be found and fixed -

that's how to properly evacuate the system -
with that said - technically - anytime the system is exposed to air -
you should replace the receiver/dryer - the desiccant material quickly absorbs moisture -
 
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