Here's a good link that explains a do it yourself procedure to top up the A/C http://www.focushacks.com/index.php?modid=85
The AC recharge valve for a 2003 Ford Focus with a Zetec engine is near the firewall. It is the larger of the two lines going to the compressor.
On the top of the ac compressor.
Go to this website: > http://www.focushacks.com/index.php?modid=85 <
The AC recharge valve on a 2001 Chevy Impala 3.4L V6 is near the firewall. It is the larger of the two tubing.
The 2002 Dodge Grand Caravan air conditioning recharge valve is located on the air conditioning compressor. The recharge valve will be labeled as such.
Take it to a mechanic.
under the thing
All cars have a valve like a tire valve you just plug into to recharge. You can buy a can of r12 at any auto parts store and instructions will be on can.
The ac recharge port is the low side port. It is on the hoses on the passenger side of the engine close to the belts.
To recharge the AC on a 2003 Monte Carlo, first, locate the low-pressure service port, which is typically found on the larger diameter aluminum line. Connect a refrigerant recharge kit to this port, ensuring the can is upright. Start the engine and turn the AC to the maximum setting. Open the valve on the refrigerant can and monitor the pressure gauge, adding refrigerant until the system reaches the recommended pressure level.
To change the AC expansion valve on a 2003 Acura TL, first, ensure the system is fully evacuated of refrigerant. Next, remove the dashboard or any necessary components to access the valve, which is typically located near the evaporator. Disconnect the refrigerant lines and electrical connectors from the old valve, then install the new valve in reverse order. Finally, reassemble everything and recharge the AC system.
The recharge port is located on the passenger side near the firewall.