2000 Toyota Tundra Temperature Gauge Showing Hot

The Tundra never has given me an overheating problem in 19 years.

2000 toyota tundra temperature gauge showing hot. Why not use that signal that goes to the ECM to actually display the temp inside the cab for us to use rather than adding an additional sensor and all the wiring. This leads me to believe that. The temperature warning light is on the dashboard gauge cluster and usually contains the words temp or engine overheating Or it may simply show a picture of a thermometer.

Joined Aug 30 2009. Now ground the 1 wire gauge should do the opposite of what it did when disconnected. Engine temp in middle top hose hot bottom hose cold.

TOYOTA Table of Contents Wiring Diagrams 1. Low Coolant- If your Tundra has been losing coolant its possible that youve finally leaked out enough that the cooling system can no longer do its job. Just bought an 06 Tundra back in April to replace my 14 Tacoma 4x4 that got totaled last year.

It only goes from normal to cold. It sounds like your radiator fan is not working or the cooling system is low on coolant. You could have an air lock in the system.

Discussion Starter 1 Feb 21 2008. With the key onengine off disconnect the 1 wire from the sender. Turnsignals Hazard Page L-2 3.

The temperature gauge just stays on cold no matter how long the truck is driven. It might be as simple as a short around the 4WD ECU. And no it would not affect the engine cooling system.