oil pressure gauge - The 1947 - Present Chevrolet & GMC Truck Message Board Network

terrylgreenjr · 01-08-2013, 12:25 PM

For starters I swaped a 91 Suburban cluster into my 77 K5. I repined everthing to match the new cluster and i bought the oil pressure sensor to match the cluster. everything else works correctly in th ecluster except the oil gauge. When the truck is off it sit on the 60 psi mark and when I start it it pegs out horizonal past 60psi Any sugestions?

BR3W CITY · 01-10-2013, 02:13 PM

Is this a hydraulic gauge or does it use an electronic sender? If its a standard gauge....you probably have a restriction in the tubing creating a false pressure. Got any kinks?

terrylgreenjr · 01-10-2013, 03:40 PM

It's a electronic gauge
Posted via Mobile Device

BR3W CITY · 01-10-2013, 07:31 PM

unplug the connector and see if it goes/stays wide open, then touch the lead wire and see if it hops around. If not, you have have either NOT grounded the sensor (common in repinning when the ground was through the harness), or the ground was shorted OR, you grounded the wrong wire.
IIRC NO ground is FULL pressure, shorted is none.

terrylgreenjr · 01-23-2013, 10:34 AM

Ok last night I figured out it was in the wrong pin on the cluster. When I repinned it and started the truck it went all the way left. I guess I was asleep when I wired this up. Which pin on the 3 pin oil pressure sensor is the feed for the gauge. If I wired the cluster wrong I probably used the wrong wire on the sensor too. I've gotta stop working on this truck after working a 12hr shift

BR3W CITY · 01-23-2013, 02:43 PM

I'm not sure I'm following this right....so what year vehicle is the actual sensor from, the 91?

Take a look at this other thread from here and see if it helps, I don't know the 80-90's wiring much by heart.

http://67-72chevytrucks.com/vboard/s....php?p=4893857

It shows power from the A pin, apparently no matter which plug (3 or 4 pin)....A being the top pin, by the "clip" on the connector.

terrylgreenjr · 01-23-2013, 05:46 PM

I switched the instrument cluster so I could have electronic speedo. Then I bought the oil pressure and coolant sensor to mactch the cluster. I resized the coolant sensor to thread in the passenger side head for the coolant temp, and now working on getting the oil presssure to read

01-08-2013, 12:25 PM	#1
terrylgreenjr Registered User Join Date: Jul 2011 Location: Dallas, TX Posts: 183	oil pressure gauge For starters I swaped a 91 Suburban cluster into my 77 K5. I repined everthing to match the new cluster and i bought the oil pressure sensor to match the cluster. everything else works correctly in th ecluster except the oil gauge. When the truck is off it sit on the 60 psi mark and when I start it it pegs out horizonal past 60psi Any sugestions?

01-10-2013, 02:13 PM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: oil pressure gauge Is this a hydraulic gauge or does it use an electronic sender? If its a standard gauge....you probably have a restriction in the tubing creating a false pressure. Got any kinks? __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

01-10-2013, 03:40 PM	#3
terrylgreenjr Registered User Join Date: Jul 2011 Location: Dallas, TX Posts: 183	Re: oil pressure gauge It's a electronic gauge Posted via Mobile Device

01-10-2013, 07:31 PM	#4
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: oil pressure gauge unplug the connector and see if it goes/stays wide open, then touch the lead wire and see if it hops around. If not, you have have either NOT grounded the sensor (common in repinning when the ground was through the harness), or the ground was shorted OR, you grounded the wrong wire. IIRC NO ground is FULL pressure, shorted is none. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

01-23-2013, 10:34 AM	#5
terrylgreenjr Registered User Join Date: Jul 2011 Location: Dallas, TX Posts: 183	Re: oil pressure gauge Ok last night I figured out it was in the wrong pin on the cluster. When I repinned it and started the truck it went all the way left. I guess I was asleep when I wired this up. Which pin on the 3 pin oil pressure sensor is the feed for the gauge. If I wired the cluster wrong I probably used the wrong wire on the sensor too. I've gotta stop working on this truck after working a 12hr shift

01-23-2013, 02:43 PM	#6
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: oil pressure gauge I'm not sure I'm following this right....so what year vehicle is the actual sensor from, the 91? Take a look at this other thread from here and see if it helps, I don't know the 80-90's wiring much by heart. http://67-72chevytrucks.com/vboard/s....php?p=4893857 It shows power from the A pin, apparently no matter which plug (3 or 4 pin)....A being the top pin, by the "clip" on the connector. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

01-23-2013, 05:46 PM	#7
terrylgreenjr Registered User Join Date: Jul 2011 Location: Dallas, TX Posts: 183	Re: oil pressure gauge I switched the instrument cluster so I could have electronic speedo. Then I bought the oil pressure and coolant sensor to mactch the cluster. I resized the coolant sensor to thread in the passenger side head for the coolant temp, and now working on getting the oil presssure to read



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