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only 3 reasons a temp gauge wont work the temp sender is bad the gauge is bad or the wire from temp sender to gauge is broken
fuel gauge stays on full and the tempreture does not move from cold on ford explorer 1998
Aprox 195 degrees F
Commonly check the temp gauge on the dash.
The engine temp gauge is in the instrument cluster and the sending unit for the temperature gauge is in the intake manifold just to the left of the thermostat housing when you are looking from the front of the Explorer ( the larger sending unit to the right of the thermostat housing is for the EEC IV system)
Your thermostat might be stuck open
why doesn't my rpm gauge and temp gauge, fuel gauge not work
Low on coolant, sticky thermostat, loose connections, faulty sending unit.
1996 prelude temperature gauge reads low temp
temp gauge is stuck on hot
The thermostat is stuck open and needs to be replaced.
I was having the same problem with my 99 explorer. What I discovered was that the overflow tank for the radiator was empty and was causing a false reading by the temp gauge.