Things to check first: Turn on the A/C control - open the hood and look at the compressor and observe whether or not the clutch is engaging (clicking on and off). If it isn't then check the fuse/electric relay that control the compressor. If the compressor operates but cycles rapidly (clicks on and off), that could be a sign of low refrigerant, have it checked. If these easy do-it-yourself checks are inconclusive then you need a mechanic.
Have the refrigerant level in the A/C system checked. Rapid cycling of the compressor can be one of the signs that your refrigerant level is low.
You can better see the compressor if you lift up the vehicle......
They don't have air compressors.
A broken fan heater can not work and A FORD Foucs does not run
The ac compressor clutch is mounted on the front of the compressor and is a replaceable part. However depending on the complexity of the clutch change out it may be overall better to change the compressor and clutch together.
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.
$1100 to $1300 if performed by a local repair shop.
If it's the compressor, the telltale signs are usually pretty obvious. It won't cycle, or you'll hear strange noises coming from the compressor, or it'll smoke.
Check the ac compressor and clutch to see where the noise is coming from. Also check the compressor drive belt for wear.
Which Compressor are you talking about ? The a/c compressor or the rear suspention Compressor ?
Where is the fuse for the a/c compressor on a 1998 ford mustang
Go to Auto Zone and ask them for the belt for your particular model WITHOUT ac. You MAY have to move, or remove, the compressor, but I don't think so.