Question about 1999 Ford Expedition

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Need to refill AC but can only locate 1 valve which everyone says is the wrong valve. Can't locate the smaller one. They say if I use the lareger valve I'll damage the AC. Need help

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Look on the left side of the firewall. There will be a bracket that holds the vacuum solenoids for the 4x4. Look underneath this bracket. You should see a canister for the A/C. The smaller port is on this canister.

Posted on Jul 22, 2009

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I want to add freon to my ac and dont no where the refill outlet is located. help!!!


Careful this is dangerous because of high pressure refrigerant and better left for people with proper training. There is a high & low side valve, both have plastic caps on them, follow the ac lines to find them. The bigger one is the high and the smaller the low.

Aug 15, 2010 | 2004 Chrysler Pacifica

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Wehere is the valve to refill the ac


LOOK BACK LOWER ENGINE FIRE WALL FOR THE EVAPORATOR LINE WITH A BLUE CAP THAT GOES THROUGH FIREWALL THATS YOUR AC RECHARGE PORT.

Aug 05, 2010 | 1995 Pontiac Grand Am

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Where is the low pressure valve located under the hood? I bought an a/c refill from the store and the directions say to locate the low pressure valve on larger aluminum tubing between the evaporator and...


yes and if the connection on the refil hose doesnt lock on thenit isnt the right one. The are tw a/c connections one larger then the other and its the smaller of the 2 u want

Jul 21, 2009 | 1997 Isuzu Rodeo

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I need to retrofit and recharge my 1988 Dodge Ram Ac.


First, the old R-12 must be completely evacuated fromt the system. R-12 and R-134A do not mix and won't function together. Once you are sure there's no R-12 left in the system, you need to install an R-134A fill valve on the low side AC line. This is where your refill hose will connect to add R-134A. Once the valve is in place you're ready to fill the system. The compressor requires a minimum of 20psi to engage and should not be filled to more than 45psi.

RECHARGING AC SYSTEM

1.Turn the truck on and turn AC on HIGH
2.Locate the low side AC line (will have a valve and cap similar to the cap on a tire)
3.Insert the oil or R-134A can to the hose (Do not turn the screw to puncture the can yet)
4.Insert the other end of the refill hose to the low side valve
5.Puncture the R-134A can with the screw on the refill hose
6.You should feel the system suction the refrigerant out of the can
7.Check for frost on the AC lines and the air blowing inside the truck
8.If frost develops and the air is cold, you've successfully recharged the system and disconnect the refill hose. DO NOT ADD MORE REFRIGERANT...overcharging the system will damage your compressor and will be less effective
Hopefully this answers your question and you're able to get your AC working again. Best of luck.

Jul 21, 2009 | Dodge Ram 150 Cars & Trucks

1 Answer

How to fill the air conditioner system with freon Corsica 1995


RECHARGING AC SYSTEM

1.Turn the truck on and turn AC on HIGH
2.Locate the low side AC line (will have a valve and cap similar to the cap on a tire)
3.Insert the oil or R-134A can to the hose (Do not turn the screw to puncture the can yet)
4.Insert the other end of the refill hose to the low side valve
5.Puncture the R-134A can with the screw on the refill hose
6.You should feel the system suction the refrigerant out of the can
7.Check for frost on the AC lines and the air blowing inside the truck
8.If frost develops and the air is cold, you've successfully recharged the system and disconnect the refill hose. DO NOT ADD MORE REFRIGERANT...overcharging the system will damage your compressor and will be less effective
Hopefully this answers your question and you're able to get your AC working again. Best of luck.

Jul 17, 2009 | 1995 Chevrolet Corsica

2 Answers

Recharge Auto air conditioner


I just did this for my 1994 Camry. Does your camry use the R-134A modern refrigerant? Probably.

Go to an auto parts store and buy a can of R-134A with a pressure guage included. You'll need that guage so you don't overfill the system. I bought one that allows me to save the guage and buy cheaper refills int he future.

There are two AC valves. A small one, located in the left-rear of the engine compartment, behind the strut tower, just in front of where the passenger seat is located. It might have a cap on it marked "L". This is the "Low" port, and is the one you want. The larger "H" port is up near the battery, is bigger, and is the "high" port. You don't want to use that one, and besides, it won't fit the can anyway.

Locate that low valve in the left-rear of the compartment. Take the cap off (if one is still on there). Start the engine and get it up to running temp. Turn on your AC to maximum cool, fan at maximum. Follow the directions on the can. It's pretty simple.

You'll pull back on the bushing on the refill line, and then snap it onto the valve just like you'd find on an air hose. Snap it into place, and then start refilling. Make sure the can is upside down and that you rotate and shake the can to get the coolant out effectively.

Jul 03, 2009 | 1996 Toyota Camry

1 Answer

Ac highside charge line location


the high side should have a black cap with a letter H on it.... if you dont see it then look for 2 valves that have caps on them, the larger of the valve is the high side, the smaller is the low side, the low side is the only one you want to use if you are refilling the system you do not want to mess with the highside... the low side pressure makes it so you can recharge the system, the highside will not work to refill a system if you are using the store bought recharging systems... and the valve on the recharger will only fit low side... hope this helps you... the highside should be on the pass. side towards the rear o the engine...

Jun 23, 2009 | 1997 Volvo V90

2 Answers

Where is the port to add the freon


if u didnt find your freon port, the low pressure side is on the passenger side next to the firewall. Notice where the strut is bolted and look a little further in. Hard to see and hard to get to. Hope this helps..

Jun 15, 2009 | 2005 Ford Five Hundred

1 Answer

Trying to find ac service ports on 03 lincoln ls


the AC service ports are capped with either blue or black caps... and being yours uses R134A, on the container the valve will only fit on the right valve under the hood... the smaller valve is the low side, that is the one you want if you are refilling... the high side will have a larger valve and the container will not fit it... YOU WANT THE SMALL VALVE... NOT THE LARGER VALVE... hope this helps you out...

Jun 13, 2009 | 2003 Lincoln LS

1 Answer

Is the A/C low side port at the firewall, passenger side?


the low side ac valve, should have a blue cap. and is the smaller of the 2 valves. that smaller one is what you would need to use to refill the system..if you are planning on refilling the ac, make sure the bottle you get to refill with is the right fluid... some earlier cars still run on r12, and some run on r134a. if you are going to fill it, have the car running and then check the pressure before you add any fluid cause you will mess the system up adding to much... hope this helps you..

Jun 11, 2009 | 1999 Pontiac Grand Am GT

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