Originally posted by Rob T.:
Before I go ahead and attempt to recharge my AC, how do I check the freon levels already in there, it warns not to overcharge and all that. I don't want to start charging and overcharge and find out it was the compressor instead.
Walmart and most auto parts stores sell a recharge kit (for around $25-30) that gives a rough idea of the charge level. The gauge only contains "zones" (low, correct, high) that will tell you where your current charge is at.
If you want to buy something that is more accurate, I saw another gauge that is more accurate (it displays the lbs. of pressure up to 500 lbs.!), but it is more expensive.
