Installing oil pressure gauge...which wire. - Pontiac G8 Forum: G8 Forums - G8Board.com
 
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post #1 of 9 (permalink) Old 07-03-2015, 10:46 AM Thread Starter
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Installing oil pressure gauge...which wire.

I'm installing an aftermarket oil pressure gauge in my 2008 V6. I'm assuming the sending unit on the oil filter housing is the oil pressure sending unit but it appears to have 3 wires on the one plug.

Does anyone know which wire to use?
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post #2 of 9 (permalink) Old 07-03-2015, 12:16 PM
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Here is your info on the pressure sensor, but it will not likely drive an aftermarket gauge correctly.

Pin - Wire Color - Function
1 - 0.5 BN/WH - Oil Pressure Sensor Signal
2 - 0.5 GY - 5-Volt Reference (LY7)
3 - 0.5 0.5 BN/RD - Low Reference (LY7)

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post #3 of 9 (permalink) Old 07-03-2015, 02:02 PM Thread Starter
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Awesome! Thanks much!
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post #4 of 9 (permalink) Old 07-04-2015, 05:06 PM
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Need to use the sender that comes with the gauge

2009 PSM GT Sport/Premium
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post #5 of 9 (permalink) Old 07-04-2015, 05:27 PM
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Won't that cause issues? i.e. Won't the computer think there is no oil pressure if the sensor is removed and thus throw an error code?

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Originally Posted by aussiek2000 View Post
Need to use the sender that comes with the gauge
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post #6 of 9 (permalink) Old 07-04-2015, 06:09 PM
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Quote:
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Won't that cause issues? i.e. Won't the computer think there is no oil pressure if the sensor is removed and thus throw an error code?
yes. didn't say replace the OE sensor

2009 PSM GT Sport/Premium
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post #7 of 9 (permalink) Old 07-04-2015, 06:10 PM
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OK. Got it. Thanks...

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yes. didn't say replace the OE sensor
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post #8 of 9 (permalink) Old 07-04-2015, 07:32 PM
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You need a Male-Female extension piece with a side outlet to screw into your oil filter housing on a V6. The original GM O.P. sender goes into the M14 female end and an aftermarket 1/8NPT sender to suit the aftermarket gauge screws into the side of the new piece.


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post #9 of 9 (permalink) Old 07-06-2015, 08:29 AM Thread Starter
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Perfect!!! this is exactly what I need because I want the factory oil pressure gauge to continue to work but I also want to use a tradition needle gauge as well.


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Originally Posted by HSV-GTS-300 View Post
You need a Male-Female extension piece with a side outlet to screw into your oil filter housing on a V6. The original GM O.P. sender goes into the M14 female end and an aftermarket 1/8NPT sender to suit the aftermarket gauge screws into the side of the new piece.

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