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Water Temp Sensor
I have a 91 Mustang LX 5.0. Having some problems with the fault codes. The Key On Engine Off codes are fine....The prob is the Key On Engine Running code 21 it pops!
The book says," Cooling Temp sensor out of range or ECT out of Range". I changed the Temp Sensor awhile back so Im not sure if this is an old code or not. Is there more than one Temp sensor or how do i reset the codes? Any help would be great.
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