Question about 2002 Dodge Durango

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How do i charge my a/c with r134?

There seem to be 2 places to hook up the hose for the r134. Which one do I use?

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Hello , you can use any one of them , or use one for recharging and one for taking the presure , and thank you for using fixya.

Posted on Jun 26, 2008

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Are you using an R134 hose connector ?

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can't be.the larger port is the HP side, and the hose on your can will only fit the low (small) pressure side-you CAN fill a system on the HP side, engine off, by hooking up to the HP side and inverting the can so that liquid 134a fills the high side-but it is not recommended if you do not have manifold gauges and aren't experienced with AC systems.

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Why did the can of R134 freeze when I charged the air conditioner on my 97 Chevy Cavalier? The low side line to my air conditioner (where i hooked up the can of r134) froze as well and my air conditioner...


History?was it working before? you cant just hook up a hose and put it in. First find out why compressor wont run, If it needs compressor, it needs a drier and orifice tube, put on a vaccuum pump for 1 hr then recharged with the correct amount of r134. You need someone who knows a/c to look at it.

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I want to recharge the Air Conditioning on my 1992 Geo Prizm. I have a can of refrigerant and the hose that you use to recharge your A/C,I'm just not sure which hose I'm supposed to hook it up to under the...


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1 Answer

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Should be right on the compressor.
Follow the low side hose back to the compressor.
If it has not been converted from PAG-46 refrigerant you will need to flush and refill.
If it HAS been converted to R-12 or 134a already - you will have to unbolt the compressor to charge - as there isnt enough clearance with the adapter installed to get the coupler on.... and it is charged on the HIGH side in this scenario... since the car is not on.

Evacuate PAG-46
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  • Open valves and run vacuum pump for 30 minutes, to boil off all moisture.
  • Close valves and make sure vacuum is held. If not, there is a leak.
Then Fill with R-134a

  • Jumper low-pressure cutoff switch (next to left headlight)
  • Hook up R134 can to hoses (purge air from line)
  • This is a good time to add oil, if needed. Pour some in the hose, the R134 will push it into the system.
  • Open high-side (red) valve. This will let some of the R134 go into the system.
  • Once you've got as much as will go in there (putting the can in warm water helps), close the high-side valve.
  • This is very important. If you don't close the high-side valve before you start the car, the can might burst. That would be bad.
  • Start the car and press the a/c switch.
  • Open the low-side valve (the one going to the compressor) and let it s uck in the R134. S uck s uck s uck.
HERE is the TSB for conversion if you're interested.


Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

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Check the fuse to the A/C and if theat's good, then it's a good chance that the A/C system needs to be re charged with R134. Yours is a 1993 so it was the change over years from R12 to R134.
Your going to have to find a sticker somewhere in the engine bay that would indicate what system you have. If your have the R134 then you can buy the  re charge kit. If your system is the R12, your going to have to take it to a shop and have them convert it over to a R134 system. 
Good luck and keep me posted.

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