Dreizehn

iTrader: (4)

Couple questions about the Engine Coolant Temp. Sensor

Is it located in the block prior to the rubber hose leading to the radiator? Small, about half inch in diameter with wire harness attached?
What would cause it to fail?
Repurcusions of not replacing it soon?

Thank you for your help.

Daniel B. Martin

On the 4th Generation Maxima engine the Engine Coolant Temperature Sensor is located in the water outlet tube close to the engine end of the upper radiator hose. There are two sensors in that area. The one nearest the hose is for the dashboard temperature gauge. The ECTS, the one you're interested in, is right next to the the gauge sending unit. There is a good picture of these sensors in the Haynes repair manual on page 3-7.

I don't know what causes sensors to fail. There are no moving parts to wear out. Perhaps the sensor tip which is exposed to coolant is subject to corrosion.

The consequences of leaving a bad sensor in the engine depends on just how bad it is. You may experience hard starting, stumbling upon acceleration, excessive fuel consumption. If your engine starts and runs well there is not much reason to replace the ECTS.

Dreizehn

iTrader: (4)

Thanks for your help...