Originally Posted by Privilege
I had a mechanic
check the thermostat on the cold motor and it seems to be working O.K.
This falls into the category of a puzzle. Doing the work myself I would be sorely tempted to swap left and right guages then left and right sensors.
Paying someone is different. Did the mechanic have any advice when he declared the sensor ok?
A dumb sounding question but is the fresh water
full on the low reading engine? It is possible to have the water level low and the sensor is not actually reading fluid temp but air temp.
Edit - whoops just reread. You plugged the low reading plug
into the normal side guage and it read higher or still read low? Didnt quite understand what you wrote.