This is not a job to be done by a backyard mechanic. The pressures are irrelevant as you will have to take this to a shop to be done anyway.
Not sure why anyone would say you need to take it to a shop just for a recharge. Since around 1995 when manufacturers started using R-134 "freon" instead of the old R-12, charging a system has gotten a lot easier. The fittings are different for the low side (suction) and the high side (pressure), so you can't connect to the wrong port.
You can get cans of R-134 from Wal-Mart for under $9.00 (12 oz.), and even get the lows side hose kit (usually blue in color to indicate low/suction/cold. But for about $17.00 at Autozone, they have a low side kit that has the "puncture" fitting to connect to the can, a hose that connects to the suction port on the car, and a built-in suction gauge marked for the desired suction pressure.
Basically, open up the puncture valve so it is back from where the can connects, connect it to the can, connect the other end to the car's suction port (only fits the correct port), then start the car. Run the A/C full on, windows down, max cool. Now, close the puncture valve so it pierces the top of the can, then as you open it up, R-134 will be sucked into the A/C system. You can probably point the can downward while it is filling, and you can always feel the hose-end of the can getting colder as freon enters the system.
Once the can feels real light, and the end doesn't feel cool anymore, you're probably done, Usually, if you had been feeling a small amount of cooling before, one can will be enough to fox things. Close the valve, tun the engine off, then disconnect the hose from the car. Replace the protective cap that was on thew valve in the first place - this protects the valve from dirt, but more importantly, it makes sure the freon doesn't leak out the service port. There should be a cap on the pressure point as well. If either cap is missing, get a replacement from an automotive parts store.
Don't let anyone tell you that you "have" to take it to a shop. As long as the "parts" are working OK, a recharge is pretty easy.
...................... Above is correct, and do not get discouraged if everything does not work perfectly (cold air) at first. Mine took a couple of days to re-lubricate the compressor and function correctly. The cost was $21.oo, and patience, instead of 350.oo at a shop.
[bjranson] Agreed. I just did it with a R134 can/pressure gauge kit from Walmart - $24. Very straightforward, and this is the first time I've ever done such a thing. The guy who said take it to a mechanic is probably a mechanic himself and doesn't want to lose business and hundreds of $ to DIYers. Either that or he's just scaremongering.
It will have to go to a garage with the correct equipment to evacuate the system and then recharge it, its not possible to do this at home.Hope this helps
buy a recharge 134a conversion kit from wallmart one of them has a instruction video on a cd.its vary vary easy!just be plz be carefull lots of pressure in those cans
If you don't know what you're doing, then you should take it to a mechanic (I got my car recharged for $30.)
Freon administered into your ac unit!
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First you need to find out if the system is a 134a system or not. It is then it recharged through the low port using one of those recharge kits from Walmart or Autozone or wherever. The port only fits on one side. If it is not a 134a system then you will have to have the expensive older freon put in or get a retrofit kit. The later is cheaper. Then refill with 134a. If system has been opened up then the system will have to be hooked to a vacuum pump and then filled with the proper amount of refrigerant and oil. Hope this helps.
I got one from my Jeep dealer today - just walked in and pretended to want to buy a drain tube and the dude did not know about what part it was so he went off and printed out 3 pages of explosion diagrams. I am in Australia.
Changing the heater core requires complete removal of the dash panel and plenum box. To do this you have to remove the steering wheel, steering column, evacuate and recharge the refrigerant system and drain the radiator. I would only consider changing the heater core if it is physically leaking into the passenger compartment. If the problem is heat transfer to the HVAC system only, the problem is more likely with the blend doors.
True
Buy a kit at Wal-Mart or auto parts comes with instructions
The 1990 Mitsubishi does not have an air conditioning recharge line. The vehicle has an air conditioning recharge port. You can recharge your air conditioning system through the low pressure port on the air conditioning compressor.
where is the low side port to recharge the air conditioning system in a 2003 jaguear s type
The easiest way to recharge your air conditioning system is with a recharge kit. The recharge kit will come with one pound of Freon, a gauge to tell you when the system is full, and instructions.
The air conditioning recharge valve on the 2003 Ford Explorer 4.6 is located on the low pressure side of the air conditioning system. Located on the line coming from the accumulator to the compressor is the recharge valve.
It will have to go to a garage with the correct equipment to evacuate the system and then recharge it, its not possible to do this at home.Hope this helps
There are two ports on the air conditioner compressor on a Montana. Attach the refrigerant to the lower port and recharge the system.
You can recharge your 2005 Kia air conditioning system from the low pressure port. The low pressure port can be found on top of the air conditioner compressor.
The easiest way to recharge your air conditioning system is to purchase a recharge kit. The recharge kit will include a one pound bottle of Freon, a pressure gauge, and instructions.
You can recharge your 1998 Mercury Mystique air conditioning system through the low pressure port. You can find the low pressure port on top of the air conditioning compressor.
Attach the Freon bottle to the low pressure port on the air conditioning compressor. Release the Freon into the air conditioning system. A recharge kit can make this process very simple.
There are two ports on the air conditioning compressor on the Mercury Mountaineer. The refrigerant to recharge the system is to be connected to the lower port.