Car Questions
RepairPal is your advocate for car care advice and guidance

A/c question

(1990 Chevrolet Camaro)
in St. Petersburg, FL on March 21, 2014
how many 12oz cans of 134a refrigerant should be added to a a/c that needs recharged after sitting for a little over a year. was recently converted over from old unit not long before it sat. no known leaks worked and blew really cold before it sat think it just needs recharging how many cans would u recommend? (its actually a 1989 camero with 2.8 V6)
Displaying 3 answers & 4 comments
Popular Answer
on March 22, 2014
what about evacuating and vacuuming down the system , or did I miss something?
Sign in to reply
of G. T. Service Center on March 22, 2014
Kids now days
of G. T. Service Center on March 21, 2014
How much is still in the system.
Sign in to reply
on March 21, 2014
I don't know it just blows regular temp. air not cool at all so I thinks its empty
of G. T. Service Center on March 22, 2014
Wow, fool proof; That's a big crock. A retrofitted r-12 system should only be charged 80% of the total charge the r-12 system calls for, and a single gauge on those cans are not fool proof. The only way to do it right, with the ambient temp below 80deg is to remove the existing Freon, and refill with the proper amount, and you need both gauges to see if it is working properly with the head pressure.
on March 21, 2014
If you are doing this as a DIY project, buy the kit with the pressure gauge on the hose. Fill the system until the gauge reads full. It's pretty well fool proof. The only way to know where an A/C system is in the way of charge, is with gauges.
Sign in to reply
on March 21, 2014
ok cool thank u
Get a repair estimate
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide.
Or interested in getting a repair? Find a Shop

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
My 2005 buick lacrosse co has been overheating. i've changed the thermostat , changed the water pump and did a flush....
After changing compressor the first time it worked for two weeks. after that, it only worked when driving. now it doe...
Didn't find what you were looking for?