Originally Posted by baja1d
With the cool weather I'd guess a bad sensor as well but a new thermostat & radiator flush isn't going to hurt.... I'm assuming your radiator is topped off, could be a ruptured hose.
Ya topped off and still full. This is the 3.4 swap I just finished in September so the coolant and most of the hoses are new.
Originally Posted by loudbay
If it went down to cool for a while, when you let the motor cool down, wouldn't the sensor be good?
No the engine was off for 15-30 seconds tops.
"-1988 Red Hilux Standard frame, X-tra cab, locked F&R, 5.29's, 35" tires and a SAS. In Moab
"-1988 Hilux, 1999 3.4L, Supercharged, 2.1" URD pulley, URD 7th injector, 2 1/2" Magnaflow exhaust, TO DO: lift, locker.
"-1987 Super Beast
"Did you know the IFS was designed by Hitler himself to make the life of 4WD owners tough? Yeah, it's true, he saw a vision of the Devil and he told him to do it." -DaveInDenver