A/C recharge?
 

Anyone know what I'd need and how to do this? I did it with my uncle a long time ago on his blazer, but I don't remember a damn thing about it other than getting a can of refrigerant. It seems my A/C isn't blowing as cold as it used to. Of course it may just be that it's F*CKING HOT in Texas? :shrug:

get the recharge kit for like autozone or pepboys for the 134A refriderant and follow the instuctions or take it somewhere to have it recharged like any auto repair shop

if ur AC needs a recharge then u gotta leak somewhere. get someone with a manifold guage set and test the pressure. also do a vent temp check.

When checking the air temp coming from the vents.... you want to put the A/C on MAX cool, drive around for 5 minutes and then check the in cab air temp near the floor and compare that temp to the air temp coming from the vents... The difference in temperatures should be about 20*. IF it is not... then you should check the your system pressures, compare them the refrigerant temperature and ambient outside air temp to determine if adding refrigerant is required.

OR 4x4

It's easily done by yourself. If you need to recharge it, that doesn't mean you have a leak. The refridgerant just gets used up over time. If it blows cold for a day and gets hot again, then that would be a possiblility. You want to put the can on the low pressure side of the system so that it sucks the r134a out of the can. I believe on our trucks...the 4.0 at least... it is on the passenger side right by the windshield fluid and coolant resivoirs. It's just a quick disconnect type connection. You can get a neat kit at wally world that has a gauge on the line you use to refill. kinda handy. And remember, if the can is getting cold, then you know that it's going into the system. make sure to have everything on full blast too.

the AC system is a closed system. there is no way the refrigerant will be "used" up...unless theres a leak.

my dads 95 effer has R-134a and the AC system has never been touched and blows out ice cold yet and he uses it everyday for 6 months outta the year. i have no idea who told u it gets "used" up...but they're wrong.

True ^^^

If the system has a leak, it should to be discharged into a refrigerant recovery unit for reuse and then the leak can be repaired.

Afterward, a vacuum pump must be used to remove the air and residual water from the system before recharging. If you skip this step, the efficiency of the AC system and the life of the system components will suffer.

dont forget the right kind of oil, for the compressor ;-)

PAG oil is used with R134a.
Both can be purchased at your local auto parts store.

OR 4x4

But if you want a to recharge the system you need to pull the system to 30mmhg of vaccum for 30 minutes and see if there is in fact a leak. I noticed people complain about the a/c not cooling "as good" because its fricking hot. If your truck sits in the sun all day it will take more time to cool, because cabin temp can reach staggering heights. Test your a/c vent temp early in the morning when temperatures are lowest. Also your evaporator fins are probably dirty and the heat exchange isnt as effective as a clean evaporator core would be. Get an evaporator core cleaning kit first. Really easy to do, just spray the aersol foam into the evaporator drain and let it drip out. It cleans and refreshes in one simple step.

Call me an idot, but thats the holes at the base of the windshield right?

Yeah I'm wondering the same thing. Where would I get one of these cleaner kits?

Reminds me once of when I went mudding, and then I turned on the A/C the next day and it blew mud flakes out at me :lol: