2001 nissan altama


#1

temp guage moves down the faster i go, sometimes bouncing donwards. any ideas?


#2

Possible faulty coolant temp sensor. (If that is what your are referring to)


#3

When you say down, do you mean back to normal or do you mean down to cold.

If it appears to run hot when driving slow, I would be looking at the radiator fan or maybe the water pump.


#4

I’d check the level of coolant in the radiator (when cold), install a new thermostat, and check the connection at the coolant temp sensor. If the gauge continues to jump around after a new thermostat is installed, replace the temp sensor.