Zenmervolt
Elite member
- Oct 22, 2000
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Originally posted by: wonderwrench
Originally posted by: steppinthrax
Originally posted by: Zenmervolt
Originally posted by: steppinthrax
As far as the AC system goes you can do some basic things such as charge a low system with the charging tube and cans of R-134a they sell at Wal-mart.
If you want to do it wrong, you can do it this way, yes. An A/C system is a closed system. If it gets low, it is BROKEN and needs to have the leak repaired. Just charging it again is the wrong way to fix things.
ZV
It's a closed system however it does leak over time (just undetectable). And if it's not too low it can be recharged in the method I suggested before. However, if it keeps comming down then yeah you need to find the leak and fix it.
Unless the system has a sight glass there is no way to know exactly how much refrigerant needs to be added. Sure you can guess but the only way to be sure is to recover, evacuate and then charge the system with the correct amount or refrigerant. I'd say 20% of the cars I see that have poor ac performance was because some dumb ass overcharged it. Cars now days use such a small amount of refrigerant in the first place accuracy really matters.
Or you can just use a quality pressure gauge. No need to recover to charge it properly.
ZV
