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Temperature guage does not work

If the car is running well at idle, but the temperature gauge fails to reflect engines' temperature, here are few possible problems that may cause that:

Please make sure that your coolant system is bled properly (per Nissan factory procedure) and has no air bubbles before replacing sensors!

- Most of the time the factory SR20DET engine temperature sensor fails between the time the engine ran in Japan till it is started here on our shores.Replace the one-wire temperature sensor on the engine block, underneath the intake manifold runners.