ECT resistance testing

[Captainblastem]

Greetings all,

Have any of you OHM'd out the two ECT's on the 3.0 SHO? What's the resistance when the engine is cold and what is the resistance range when the engine is at normal operating temperature? My temperature gauge doesn't appear to be reading correctly. I'm guessing that when the engine has reached about 190 degrees, the dash gauge reads in the middle?

Thanks!
Rob

 

[SHOtime2511]

The single prong sensor just below the thermostat is for the gauge. The other is for the ECU. If the gauge is reading @ cold all the time,it's bad.

 

[rubydist]

according to my factory manual,
a sender resistance of ~74 Ohms should result in a temp gauge reading of "C"
and a sender resistance of ~10 Ohms should result in a temp gauge reading of "H"

it says after connecting the appropriate resistor, wait 60 seconds to read the gauge.

 

[Captainblastem]

Thank you!