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Old 09-04-2002, 01:22 PM
Registered User
Join Date: Aug 2001
Location: Potomac, Maryland
Posts: 29
1998 C230 A/C Recharge


Looking for someone to walk me through a quick refrigerant recharge on my 98 c230. I literally want to do this over 10-15
min on my lunch hour. I want to make sure I am not going to do any major harm to my system by doing this without an elaborate process or going to the dealer:

1. What type of refrigerant do I use ?
2. Where is the entry port for the refrigerant or refrigerant extension to screw into ?
3. Should the motor be running and should I have the ac running while I am charging the system ?

All info appreciated...Thanks.
1998 C230
1994 Infiniti J30T
1984 BMW 318i
1987 VW Golf GT
1975 Buick LeSabre Conv.
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Old 09-04-2002, 09:39 PM
blackmercedes's Avatar
Just a guy
Join Date: Dec 2000
Location: St. Albert, Alberta, Canada
Posts: 3,492
First, have you diagnosed the AC problem other than "no coolant?"

These systems are sealed, and don't require periodic refilling. If you are low/out of refrigerant, then you have a leak, and that MUST be fixed for your AC to operate properly.

One thing to remember is that even though your compressor has a safety protection to shut it off in the event of low/no coolant, you're rolling the dice on braking something by running a system with a leak.

All late model cars use R134a.
John Shellenberg
1998 C230 "Black Betty" 240K

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