Question about 2003 Ford Focus
Hi Sulthan, I've never heard of replacing only one fan on these cars as they come in a pair when you buy new ones. I'm assuming that you are having an over-heating problem. Sometimes it is not the fan but the fuse under the hood. If you open the hood and look towards the firewall on the driver's side you will notice a black box. Remove the cover and you will see several fuses. These aren't the traditional small fuses that you think of under the dash. These fuses are about an inch square. When standing at the fender, the big fuses futherest from you on the right side of the box towards the engine are the ones that you want to look at. First, try tapping on these 4 fuses lightly with a scew driver or something similiar. The car should be running and at operating temperuture or a little above. If this doesn't make the fan(s) come on then mark the fuses first and try swapping them around. Of course if this works then you will know that you've only got a fuse problem. If this doesn't work try tapping on the fan motor lightly. If it is still trying to run hot,let the engine cool down and remove the thermostat. It should be in the closed position. Boil some water on the stove and drop the thermostat in the boiling water for 3-4 minutes and see if it opens up. If it don't, then replace the thermostat. Take your old one to the parts store with you because there are at least 2 different kinds of thermostats in this car. If this doesn't solve your problem then you may have a cylinder head issue. If this is the case, have a compression check done to see if you have problems in this area. I hope this helps you. John
Posted on Aug 28, 2010
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Posted on Jan 02, 2017
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