Temperature Switch OMC p/n 0386686 Test

[Terrapin]

I purchased the above "new old stock" temperature switch which came in the original OMC Bombardier box complete with brown instruction tag p/n 319993. Unlike my original sensor, this sensor has the additional ring terminal that gets connected to the engine block.

Prior to installation, I am testing this switch for continuity using my Klein Tools CL800 multimeter set to the audible Ohm setting. With a probe connected to each lead, I am not getting continuity or an audible continuity sound when the water temperature reaches the service manual specified 211 +/- 6 degree temperature or boiling point. In addition, I would have thought I would have continuity from the face of the sensor to the ground ring terminal, but I do not.

Is my "new old stock temperature sensor bad, or am I missing something in my test procedure?

 

[saltchuckmatt]

What engine and what are the two colored wires coming out of the sensor?

 

[Terrapin]

Sorry, this is a 1986 Johnson 150 HP crossflow V6, model number J150TXCDC.
My original temperature sensor only had one tan wire with a knife connector and there was not a separate ground wire.
The "new old stock" p/n 0386686 has a tan wire with a knife connector and a black wire with a ring tongue terminal on it that is supposed to go to engine block ground (a cover plate screw).

 

[saltchuckmatt]

I purchased the above "new old stock" temperature switch which came in the original OMC Bombardier box complete with brown instruction tag p/n 319993. Unlike my original sensor, this sensor has the additional ring terminal that gets connected to the engine block.

Prior to installation, I am testing this switch for continuity using my Klein Tools CL800 multimeter set to the audible Ohm setting. With a probe connected to each lead, I am not getting continuity or an audible continuity sound when the water temperature reaches the service manual specified 211 +/- 6 degree temperature or boiling point. In addition, I would have thought I would have continuity from the face of the sensor to the ground ring terminal, but I do not.

Is my "new old stock temperature sensor bad, or am I missing something in my test procedure?

Yes, not my specialty...typically it's just a ground switch. Not sure on yours....mid wire patch through? I don't get the point. One thing though, you can't get continuity from ground wire to cold sensor. Sensor needs to be hot to complete connection. Make it hot and plug in the tan wire, should blare.