Still cannot find the a/c low end valve to recharge the a/c I am told it is going into the fender is this valve in the engine compartment OR do you have to remove something to find it? this is for 2003 ford focus ZX3

Low side is on or near the Drier/ accumulator. That's a large round part with a hose going in and a metal tube coming out on the left side looking at the engine compartment from the front bumper. It's near the firewall close to the fan motor

it's straight below the high pressure valve about a foot. it's a little stem with a cap on it. it's kind of by the oil flter. i didn't see it the first time i looked either.

Instructions

1. • 1Start the recharging process with any left over freon you may still have. Open the Civic's hood and attach the kit to the Civic's low side port. Then, set the kit onto a place in the engine compartment where nothing can move or shift once the engine has been cranked.
     
   • 2Start the Civic and let the engine run until it reaches its normal operational temperature.
     
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     • Single Pressure Gauges for Indl., Commercial & Specialty Uses
       

   • 3Turn on the air conditioning to its coldest and hardest-blowing settings. Place a thermometer into one of the Civic's air conditioning vents and monitor how the temperature drops. Once the air conditioning's temperature reaches a level, constant degree, remove the thermometer.
     
   • 4Open all four doors on the Civic. This will allow any colder air generated to escape, and this will keep the Civic's air conditioning for accidentally cycling off while you recharge the refrigerant levels.
     
   • 5Turn the recharging kit's valve all the way down and let the refrigerant charge into the Civic's air conditioning periodically, shut the valve and look at the kit's gauge. This will allow you to monitor the recharging process. Allow at least one minute to elapse between refrigerant charges into the system.
     
   • 6Shut the valve of the canister, once it has become depleted. Disconnect the kit from the low side port.
     
   • 7Detach the hose, gauge, and valve from the empty canister and attach them to a new canister of refrigerant. Reattach the kit's hose to the Civic's low side port and continue recharging the system, allowing a minute between individual charges. The can itself can potentially grow very cold and hard to hold, even with gloves. Should this happen, wrap the can in a towel warmed in water. Ring out excess water before wrapping the canister.
     
   • 8Place you thermometer into one of the Civic's air conditioning ducts. Keep an eye on the falling temperature within the Civic's air conditioning system. The system is charged when the temperature hits 40 degrees. Also, within the engine compartment, the Civic's air conditioning aluminum tubing become uniformly cold.
     
   • 9Shut the recharging kit's valve and remove the kit from the low side port, once the system has been successfully recharged. Shut down the Civic's air conditioning, turn the engine off, and remove your key from the Civic's ignition. Also, shut all the doors
     

Attach the end of the recharge hose to the low side pressure port on the passenger's side of the engine compartment, near the firewall. Look for the metal coolant lines and follow the lines to locate the low side pressure port. The port is usually covered by a plastic cap. Screw the discharge end of the recharge hose -- the end without the handle/valve -- to the pressure port.

• Screw the valve end of the recharge hose onto the top of the can of refrigerant. Turn the handle clockwise to pierce the top of the can of refrigerant. Turn the handle counterclockwise to allow the refrigerant to flow into the hose.

• Start the Cutlass. Turn on the air conditioning to the maximum setting.

• Turn the can of refrigerant upside down and gently swirl the can. This moves the refrigerant from the can to the hose and into the air conditioning system.

• Insert a thermometer into the interior of the center air vent and test the temperature of the air coming from the duct. It should be approximately 35 degrees colder than the ambient air temperature.

• Add more coolant if necessary. If you are using 12-ounce cans, unscrew the first can and screw the hose onto the second can. Turn the handle clockwise to pierce the top of the can, then turn it counterclockwise to allow the refrigerant to flow into the hose. Do not add more than 24 ounces to the system. Take your Cutlass to a service center if you have added more than 24 ounces to the system and there is no difference in the temperature.

• Turn off the engine of the Cutlass.

• Turn the handle on the recharge hose clockwise to seal the can of refrigerant of it is not empty. If it is empty, unscrew the can from the hose. Unscrew the discharge end of the hose from the low side pressure port. Place the colored cap over the pressure port.

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To locate the low side line, follow the lines from the compressor. Typically, your low side line will be located on the left (as you face the front of the truck). It will have a small cap on it (similar to a valve stem cap on your tires). You may need to remove the air cleaner assembly for better access if the valve is in the back but in most cases, it's located nearer the front of the engine compartment, about 1' back from the radiator.

The low side fitting is on the passenger side of the car, near the compressor and the headlight area, close to the drive belt, about 12" away from the radiator. Locate the black screw dust a cap, looks similiar to a valve stem cap on your tire valves. The high side connector is located in the engine compartment, passenger side, near the fender well back towards the alternator and very close to the drive belt. The high side fitting is much harder to find than the low side, the low side is in the open. The fitting you have for adding R134a from the recharge kit will not fit on the high side. The high side fitting is smaller than the low side fitting. Thank goddness for that for if you were capable of putting the fron can onto the high pressure line, it would develope so much pressure from the high side, it would or could explode in your presence.
Please be aware that you need to wear protective eye and hand gear when working on an a/c system(freon can blind you if sprayed directly in your eyes and can cause frost bite when over exposure to your skin.
Happy Motoring!!

the low pressure valve is the longer skinnier one. The low pressure valve should be on the fatter of the hoses in the engine compatrtment. Try close to the compressor. if you stil cannot locate it i can check my service manuals or the exact location.

the "low Side" is on the receiver drier hose it should be visible on the passenger side of the engine compartment

The low-pressure service gauge port valve is located on the suction accumulator.

The high-pressure service gauge port valve is located on the LH top of the condenser core.

To access the low pressure port you have to remove the right front wheel and inner fender.

yea its ussualy yhe one near the battery