Thursday, February 27, 2025

Oil Pressure Sensors Are NOT Interchangeable!

 We discovered an oil pressure issue on a 2ZZGE-equipped Elise.  It turns out, there are two interchangeable sensors on the engine that will allow the car to start and run.  In other words, they can be screwed in and plugged into harness in either position!  But if they are switched, the car will throw a code when revved into the second cam.  



Other than being different colors and having different numbers printed on the sensors, both oil pressure sensors visually display very similar characteristics and use the same style electrical connection.  

They are boxed in red above

The black Pressure Switch sensor is supposed to be installed in the head and the gray Sending Unit goes into the oil filter housing.  

We found the Toyota part #s as well.  Se below:



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