AC question

[RichardT]

I'm going to try to recharge my ac system. i do believe you charge from the low side? I looked under the hood and found 2 places. which one of the 2 spots is the low side? there's one on the line headed towards the radiator & one on the canister next to the firewall. I'm thinking the the lowside is on the line???? am i correct? has I know someone has tried this.

[tubular031]

Having ac issues with the truck, the pimp mobile and the new (old) benz here Been reading up on ac stuff now for a few days too....


Get the little gauge from autozone to see if there is any pressure in the system at the moment. If there is nothing in the system dont bother trying to charge it, you cant.... you will need to vac the system and find the leak.

If there is pressure in the system then you can add more from the low side with the little gauge/hose thing from autozone. The low port is on the dryer on the pass side up next to the fiewall.

My truck has a slow leak on the hose coming from the condenser (the thing up front in front of the radiator) and every summer now I have needed to add a can of freon. This sommer I needed 2 cans.... so I hope it holds up till winter and ill open it up and start replacing things. I need a vac pump and some gauges!

[EMVT]

You can only charge from one side... the fittings are different sizes. But the low side is the smaller fitting.

[EMVT]

ok.. just looked at some pics of your motor... it's the one on the canister.

[WEWILLE]

I recommend you take it to a shop with a certified and liscenced a/c tech. If your losing refrigerent, theres a reason, and you might as well just get it fixed properly.

[EMVT]

I would have to agree with that statement as well... not only will they find the leak, but the system needs to be vacumm down before it's recharged. Doing this properly the first time will pay off in the end.

[RichardT]

Thanks, It does blow cold air in the mornings. and right a first. But if you keep in on high it will slowly start to warm up. I've never added any freon so i'll try to add this weekend and see what happens before i spend the $$$ The little kits you get from Autozone are much cheaper than a AC mechanic. so IMO its worth it to try

[EMVT]

do yourself a favor... when it's running see if your compressor is running. If it's "short cycling" I would try the adding of 134, otherwise don't bother. You can overfill these systems, and it will blow the relief valve on your compressor.