Question about 1990 Ford Econoline

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Where is the low pressure port to put r134 for ac

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The low side of the AC line is the bigger pipe coming out of the compressor, it usually goes up along the fire wall and has a green cap on it with the letter L on it. It is also the only place where the filler will fit. If you are charging your system, those do it yourself bottles at walmart, or anywhere, work great, take it up to 35 lbs, run it for a week, and check it again, If it leaks down, refill it, It has a sealer in it and oil. I did mine from bone fry, one 18 oz bottle did it, still going strong. I thought I was going to have to keep on refilling it, so I bought another bottle, haven't touched it yet. Hope this helps. 18 oz bottle is under $20.

Posted on Aug 29, 2010

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I want to recharge the ac but cant find the input fitting?


Go to autozone and ask for a can of: R134-A. Make sure to get a can with hoses and a gauge. Don't let the pressure build up to much. make sure you hook it into the right connection. Its the metal hoses right by the radiator. -------------- Its usally a pretty easy job, especially if you get one of the kits with the gauge in it. They can be found at autozone, etc. The connectors are pretty smartly done. This thing will only connect to a low pressure port on your car. You are looking for a blue or gray cap on one of the A/C lines with an "L" on it. ------------------ Locate the Low Pressure Side service port. It is usually on the driver's side of beside the engine block. Remove the black cap marked L. Look at the connector type to determine if your car uses R134 refrigerant. The R134 compatible systems have a quick connect valve on the Low Pressure Side. ----------------- Hope this helps.Thanks.




May 11, 2011 | 1997 Honda Accord

1 Answer

I am not exactly sure which ac port, High or low side (or both), to put R134a refrigerant into my 1984 LTD Crown Victoria. The ac hasn't worked in about 6 years. Not sure if ac stays charged while...


If the compressor really has sat that long, the seals will be dry and you will not likely be able to keep R134 in it. Always fill on the low pressure side. The fittings are a different size, so your fill hose should not fit on the high pressure side. The low pressure side is along the return from the cooler.

Aug 24, 2010 | 1984 Ford Crown Victoria

2 Answers

How to recharge recharge airconditioner


Hi, determine if your car uses R134 or R12 refrigerant. You will notice screw type connectors on the both the High Pressure Side and Low Pressure Side lines in models using R12 refrigerant. R134 compatible models have quick connect valves on both sides. Models made before 1995 may use the old R12 refrigerant. If this is the case, you must have your Chrysler's air conditioning system retrofitted to use R134 refrigerant. Mixing R12 and R134 refrigerants is dangerous and may cause damage to your vehicle. Check your air conditioning system pressure using an automotive air conditioning pressure gauge. Keep in mind that in order to get an accurate reading, the air conditioner has be turned on the coldest setting with maximum blowing power. Remove the Low Pressure Side port valve cap and set it aside. The location of the port varies, but it is usually in front of the engine block. Attach the refill hose to the port on the Low Pressure Side of the air conditioning system. The Low Pressure Side port is smaller the High Pressure Side port. Because the ports are different sizes, the refill kit hose should fit only on the Low Pressure Side port. Additionally, the High Pressure Side port will usually have a red cap or be marked with an H or the word High Allow the air conditioner to **** the refrigerant out of the can by slowly turning the valve on the refill kit hose. Pay attention to the way you hold the can. Most kits will have you hold the can upright when you recharge the air conditioning system. It may take as long as 10 minutes to empty a single can. Turn the valve to the off position and remove the refill hose from the port. Recap the port before closing the hood. Let the air conditioner stay on for at least 30 minutes. This allows the refrigerant to move throughout the entire system.
Take care

Aug 03, 2010 | 2006 Chrysler Town & Country

2 Answers

Where do i add r134 on the 99 buick regal , I see to nozzles under the hood one to the right boy wheel shock and the other back center closr to firewall


Closer to firewall is where your low side port should be. Your R134 filling hose quick connect adapter will ONLY fit on the proper "low side" connector port at that location because it is a different size than the high pressure port. You can't put it on the wrong port and get it to fit.

Jul 25, 2010 | 1999 Buick Regal

2 Answers

FACING THE CAR, WHERE IS THE EXACT LOCATION TO ADD FREON TO A 1997 CHEVY MALIBU. WE FOUND A RED CAP BUT UNDERSTAND THIS IS NOT WHERE YOU SHOULD ADD. HELP .....


The low pressure refrigerant port is near the firewall2.gif, just after the receiver/dryer. You'll need a gauge and preferably an ac test manifold. You can use the manifold to add refrigerant up to the point where the system maintains the pressure level in the green area. There should be a blue cap on the low pressure valve.
I believe your malibu take's 12 ounce's of R134, don't over charger the system. You'll blow O rings and worst kill the A/C compressor.
Good luck and hope this helps. Here is a link for A/C recharging. http://www.geocities.com/vantaray/air_conditioning.htm

Aug 19, 2009 | 1997 Chevrolet Malibu

2 Answers

My recharging kit for air conditioner doesn't seem to fit recharge valve on 2004 dodge durango. How can I be sure i am looking at the low prerssure valve?


Newer vehicle come with R134 vs R12. Since the two are not compatible, R134 has larger fittings. AC system has two ports, High and Low. Low is return to AC Compressor and high is output. High port is first following line from compressor to condenser (condenser is at front of vehicle like a second radiator). Keep following line till you find high port (paint cap red). Second port is low (paint cap blue).

Jul 11, 2009 | 2004 Dodge Durango

2 Answers

Where do i put freon in on a 2005 focus


Your focus should not take freon. Freon is used in older cars from 1995 on back. Your focus should take R134 and the plug for your AC should be located under the passenger side wheel well (yes ford makes things so convenient). Just unscrew the little plastic crews in you wheel well and attach the gauge and can of R134 (should take a little more than 2 large cans).

Jun 29, 2009 | 2005 Ford Focus

1 Answer

Where is the Low Pressure A/C port on a 2005 ford mustang


look for the larger ac line/hose it will be that one it is the small service port,the small line/hose has the high side fitting with the large port it will only fit one the low side some are hard to fit on with those single hose kit ,they are not made very well

Jun 27, 2009 | 2004 Ford Focus

2 Answers

How do I recharge the AC freon on my own?


You should have R12 freon in a 1990 but you can put R134 freon into that system the only problem your going to have is the adapter for R12 is different from R134 after you get the adapter you need to put the freon in the low pressure valve not the high pressure, you will know which one because the adapter only fits the low pressure valve which is located on your AC lines under your hood, theres a little cap thats either blue or black you unscrew. You can't buy r12 anymore because its not good for enviorment so buy R134. you can buy at any parts store for like $5 to $10.

May 28, 2009 | 1990 Honda Accord

3 Answers

AC is not working


Sounds like the A/C system just needs to be recharged. When was the last time you had this done? Just take it in to your mechanic and he can do it for you and if that's not it for some reason, then he will be able to find the problem but most likely you need more freon added.

Benjamin

May 26, 2009 | 1995 Acura Integra Coupe

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