coolant temperature sensor

recently my 92 sc400 would run hot while sitting at idle (drive thru, etc.). I noticed some coolant residue on the thermostat housing and lower radiator hose so I decided to do a small overhaul. I replaced the lower rad hose, thermostat, and oem radiator. when I started I only drained the...

Hi, This problem has been around for a while on my 1uz (dropped into a Toyota 4runner). It used to occur only when it was running very hot but now occurs almost every time I shut it off at operating temperature. When I turn the engine off/stall, and then attempt to turn the car back on, it...