Having problems with your 2003 Ford Focus ?
My 2003 ford focus a/c will only come on when blower fan is on low speed?
If you mean that the AC switches off if you select higher speeds on the fan, the AC switch is faulty and is not keeping the contacts closed to the AC compressor clutch on the upper selections.
Most likely low on refridgerant. ports are difficult to access .In front of passenger front wheel the accumulator is located. low pressure port is on top of it. Try and add a pound of 134a and see if it cools more efficiently. evaporators are common source of leak on these fine machines.
Repair Help & Product Troubleshooting for 2003 Ford Focus
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