What would cause this? i know on dsm's its because of the coolant temp sensor out, what about on evos???

any help is greatly appreciated. thank you

josh

 

Do you mean like off the bottom of the gauge?

 

No in my tuning software. Its always read correctly, however I cannot start my car now and keep it running. And I noticed my logs say -77F for coolant temps.

Any ideas? Would anything else cause this?

 

absolutely no modifications to the sensor or wiring?

Faulty sensor ?

 

Faulty sensor. Sensor is grounded out. The ecu sends out a 5v reference. Then sensor is nothing more than a variable ohm. Unplug the sensor. One wire will read 5v the other should have a good ground. If that checks out then ohm the sensor. If its infinte ohms sensor is at fault.