Truck AC service question
My truck's AC is low on Freon (shows all the classic signs but still functions). There are two schools of thought on recharging; Have a shop evacuate and recharge the system based on weight fo...
Forum Discussion
proxim2020 wrote:
I recharged my old truck with one of those recharge cans and verified that the pressures were in spec with a set of real gauges. Sold it 3 years later still blowing cold. If you don't have a a set of gauges and don't want to buy any, then make sure to buy a can that has pressure indicator markings vs a simple green zone like ScottG pointed out.
I put all the windows down, run the fan on max, and put the AC on the coldest temperature. Normally pressures are checked at an elevated RPM so you'll need a helper to hold the truck at the specified RPM while you check and recharge. Also, the correct pressure is dependent on the ambient temperature. You'll need to get a hold of a pressure chart for the truck to figure out the proper pressure for the temperature outside.
Sounds like you did it right and you bring up even more details that are in the manual. In the case of my truck, the windows are to be up and doors closed during the process - but every vehicle may be different.
I think the only safe way to do this is with an vehicle specific manual and a set of gauges. I got a set off Amazon for only $30, cheap ins!
