There are several things that can cause your 2001 Ford F2 50 outside temperature gauge to quit working. The most common cause is a malfunctioning outside temperature sensor.
Try replacing temperature sensor
Check connector and wire for shorts/breaks.
Hi there this happened to me to, it mite be a fuse or relayor the temp sender unit on the inlet manifold. It may be a faulty gauge but it is more likely to be one of the other to. Hope that helps
Start with the fuses, then go to the more complex problems
Be careful there is a temperature coolant switch mounted next to the thermostat housing. I thought this was the sensor and replaced it by mistake. There is another sensor.
You can check the temp. gauge operation by removing the temp. gauge sending unit plug and touching it to any engine ground with ignition on but the Van not running. The gauge will go to hot right away, if it is working. The temp. gauge sending unit is located on the drivers side of the engine at midpoint just below the exhaust manifold. It will have a single wire running to it and be plugged into the sending unit.
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If your coolant level is fine but your engine temperature gauge is reading on the cool side all the time , your thermostat is probably sticking open. ( or you have no thermostat , or the wrong thermostat - one that has too low of a temperature range ) Anybody else have any ideas ?
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