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Old May 6, 2015 | 11:18 AM
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Default oil temperature switch

I broke the wires to the oil temperature switch. The wires running into the clip are black and green. The replacement clip has two whites. The dealership parts guy din't know if there was a poistive and negative. Does anyone have an answer?
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Old May 6, 2015 | 04:40 PM
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Originally Posted by Flip P
I broke the wires to the oil temperature switch. The wires running into the clip are black and green. The replacement clip has two whites. The dealership parts guy din't know if there was a poistive and negative. Does anyone have an answer?
The engine oil temperature sensor (EOT) should have a black wire, which is the low reference, connected to pin "A" on the sensor.

The temperature sensor signal on the EOT should be a DK GRY/WHT wire, which goes to pin "B" on the sensor.

The black low reference wire on pin "A" should measure about +5 volts to ground.
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Old May 6, 2015 | 10:12 PM
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All AC Delco pigtails use white wires.

These are OE colors:

https://www.eficonnection.com/eficon...px?ItemId=1119

Connect black to black. Don't worry about the other too much. There's only two wires.

They DO have a $25.00 minimum, so shop for something else you need too.

Last edited by LoneStarFRC; May 6, 2015 at 10:15 PM.
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Old May 7, 2015 | 12:12 AM
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It's a 2-terminal thermistor element so it really doesn't matter which wire goes to which terminal. The PCM is just reading the resistance of the sensor.
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Old May 7, 2015 | 10:15 AM
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Originally Posted by lionelhutz
It's a 2-terminal thermistor element so it really doesn't matter which wire goes to which terminal. The PCM is just reading the resistance of the sensor.
Thanks for the information. I threw out the old clip thinking that the new clip would have the same color coding as the wires I now have dangling. There's nothing on the sensor that identifies the leads.
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