2003 Ford Focus Cooling Fan Problems Youtube Unplug it, and you'll proably see the connector inside fried, as well as the resistor side (both male and female side) 2.check the 2nd fuse for the fan relay in the fuse box under the hood. its a maxi fuse, 30amp (green). it may be either burnt or tripped. you'll have to get the pigtail and resistor from ford. I have a 2003 ford focus with a 2.0 zetec engine in which the cooling fans are not triggering. temp gauge gets midway, but vehicle overheats. computer is throwing no errors when connected but temp on computer shows over 190 and temp gauge is in good zone when coolant temp sensor is disconnected, fans run constantly, so assuming fans are good.
Sparky S Answers 2003 Ford Focus Runs Hot Cooling Fans Inop Part 1 If your radiator fan is not turning on (ac off) and allowing the engine to over heat around town at lower speeds, you have a temperature sensor problem. usually there is a coolant temperature sensor that controls the fan. the head temperature sensor is also a possibility, but it usually controls other functions. To check it with the engine not running you need to have the lights on first for about 10mins to get rid of any residual charge that would give a false reading, turn the lights off when taking a reading. can you also do the same thing when you turn the fan on and off so we can see any change in voltage. reply like. n. From the haynes manual i can find the following. radiator fan resistor assembly – which is secured to the top of the fan shroud. cyclinder head temperature (cht) sensor located on the engine near the spark plugs. from the wiring diagrams, engine bay fusebox fuses. f6 – engine cooling (air con). The most common reasons a 2003 ford focus radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor. 0 % 45% of the time it's the.
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