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Oil pressure sensor

Tiny
DCVZFOX
  • MEMBER
  • 1988 CHEVROLET 2500
  • 6.2L
  • V8
  • 4WD
  • MANUAL
  • 200,000 MILES
I bought this truck used and the oil pressure sensor is hard wired and needs replaced it has the 3 prong sensor. So my question is which wire goes to which prong the wires are red orange and white. The orange wire is hot when I turn the key
Tuesday, May 15th, 2018 AT 8:12 AM

12 Replies

Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
Those are not the color wires I see. I see a orange, pink/black and tan. The tan actually being for the gauge, the orange, pink/black for the override for the fuel pump relay.
Can you double check the VIN number and post it? Plus double check the engine number and post it because maybe this is not the original engine.
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Tuesday, May 15th, 2018 AT 8:26 AM
Tiny
DCVZFOX
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Okay, it might be pink and on the sensor the is one silver prong and two brass ones. The silver is in the middle. Which wire goes to which prong?
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Tuesday, May 15th, 2018 AT 8:30 AM
Tiny
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I do not know. Like I said they are not the wire colors I see. Can you double check the VIN number and engine?
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Tuesday, May 15th, 2018 AT 8:35 AM
Tiny
DCVZFOX
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You said you found a orange pink/ black and tan wire. Can you tell me which wire goes to which prong. I am not currently around the truck or I would give you the vin number.
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Tuesday, May 15th, 2018 AT 8:42 AM
Tiny
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My manual does not show the sensor prongs, but I can tell you the orange wire should be hot from the fusible link, the pink/black goes to the fuel pump relay and the tan wire is for the oil pressure gauge/light.
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Tuesday, May 15th, 2018 AT 8:47 AM
Tiny
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Wait, this is a diesel? Still the same wire colors though.
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Tuesday, May 15th, 2018 AT 8:49 AM
Tiny
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Yea it is a 6.2 diesel with no turbo.
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Tuesday, May 15th, 2018 AT 8:50 AM
Tiny
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I suggest you purchase the pigtail for that switch, that way you will know where they go.
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Tuesday, May 15th, 2018 AT 8:54 AM
Tiny
DCVZFOX
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  • 13 POSTS
I tried and they all have grey wire so I still will not know which wire to hook to which wire.
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Tuesday, May 15th, 2018 AT 8:57 AM
Tiny
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I assume that is a generic pigtail.
I tried looking at photos of switches at Rockauto but still none of the prongs are marked. I suggest you try to get an OEM pigtail or search the internet for anyone else who has had this same problem and found out a solution.
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Tuesday, May 15th, 2018 AT 9:13 AM
Tiny
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Okay, thanks for the help.
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Tuesday, May 15th, 2018 AT 9:16 AM
Tiny
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You are welcome.
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Tuesday, May 15th, 2018 AT 9:34 AM

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