Why won't oil light go out?

Cleon Couey · Nov 29, 2015

I have an Oliver 1655 diesel that I put an oil light from a 1600 on. I did because relatives were leaving tractor switched on and as a safeguard against low oil pressure. When running gauge says 75 to 80 lbs.Oil light stays on. I changed the sender but didn't change. Checked oil gallery and not plugged.What am I missing?

crawlerjohn · Nov 30, 2015

Does the light go out if you unhook the sensor? If it does check the resistance of the sensor when running should be 0

Cleon Couey · Nov 30, 2015

Yes because the switch provides the ground for the circuit.When oil pressure builds after starting the engine the switch breaks the ground and light goes out. Could new switch be bad?

Kerwin · Nov 30, 2015

Did you check wire between light and switch? Wire to switch could be grounding out and completing the circuit, regardless of what switch is doing.

Kerwin · Nov 30, 2015

Sorry, reread your post that light does go out if disconnected from switch, which would mean wire to switch should be good. I hate doing swapnostics, but I guess I'd try another switch.

Cleon Couey · Dec 1, 2015

Continuity on wire checked good.Guess I'll have to dig a little deeper.

jmcarlic · Dec 1, 2015

Maybe you've got a sending unit for a gauge and not a switch for a light?

Why won't oil light go out?

Cleon Couey

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crawlerjohn

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Cleon Couey

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Kerwin

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Kerwin

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Cleon Couey

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jmcarlic

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