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What's this sender?

carboncow

Contributing Member
1997 Volvo Pental 7.4L MPI

I noted that the wire was off this sender. Oil pressure and water temp gauges are working...and I believe this wire has been off some time as the clip was very loose. Note the black canister off the t-fitting.

This was on the port side toward the back of the engine. You can see the down exhaust rubber hose to the right.

2020-11-10_23-29-29.jpeg
 
Being a single terminal, having the shape that it does and given that it shares the oil port with what appears to be a sender......, I'd say that it is a switch, not a sender.

It may be for a low oil pressure alarm.
 
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