What are the high and low side refrigerant pressures for my Max? My son has a manifold. I know the quantity should be about 1.41 lbs.
Jim G
- posted
17 years ago
R135a hi/lo side pressures? '99 Max GLE
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- posted
17 years ago
Ya gotta weigh the stuff as you can't determine proper pressures merely from gagues like the R12 days. With the smaller amounts of refrigerant the over/under charge by percentage is critical. The variable compressor compensates to provide spec pressure regardless of amount, to a point. Best to evacuate and charge with measured weighted amount.
A good shop has a machine that will pull the old stuff out, weigh it, filter it, and then replace / replenish it for maybe 40 bucks. All automatic and unattended. Might take 30 minutes.
Or you could buy a can and a hose & just guess. While you're there, price a new compressor in case your guess is off the mark.
Jim G wrote: