Oil pressure gauge sensor questions [merged] oil sender

sinracing · Feb 26, 2003

All oil sender threads are merged here.

going down the road today i noticed my oil pressure gauge was reading nothing or zero depending on how you look at it..on my stock gauge..

i immediatly pulled over to check my oil and found that it and the rest of my car was fine..its still running fine and everything so i came home to check vfaq.com and it said that my sensor could be the culprit..

so my question is there a website or link to a page that will show my hw to check my sensor??? and or replace what is needed to read my oil pressure... or shuold i just say #### it and get a aftermarket gauge right now because its more accurate anyways?..

yeah im new around here so go easy on me..but i didnt think this was a dumb question or anything so thats why i put it here..

turbotalon42993 · Sep 19, 2011

alright so i recently bought a 95 talon tsi awd. Upon fixing what the guy before me screwed up, i found that neither of the wires that should be hooked up to the oil sender/pressure unit are. they're just hanging from the wiring harness by the alernator. the colors are solid yellow, blue with white stripe, and light green with a red stripe.
so my question is what color wires are for the pressure sensor, and sender switch and whats the other for?
ANY HELP MUCH APPRECIATED

oh yea and whats this idiot light? is that the sender switch

19Eclipse90 · Sep 19, 2011

Yellow - Oil Pressure Gauge Unit
Blue w/ white - Power Steering Pressure Switch
Light green w/ red - sure it's not Yellow w/ black? -- Oil Pressure Switch (Dummy Light)

turbotalon42993 · Sep 23, 2011

thanks for the help 19eclipse 90

ajeclipseguy94 · Aug 11, 2012

just looked at my car because i was curious and noticed my oil pressure gauge wasnt working and my engine dont even have the sending unit as pictured above

ist dwa · Aug 9, 2020

"At the oil pressure sensor.... If the wire IS*** connected, pull off the wire connector and ground it to any nearby metal for a couple seconds while a friend [or enemy] looks at the gauge. The needle should move to full scale [high pressure]. If it does then the sensor is toast.... If not then there is a wiring problem or the gauge is bad. "

When diagnosing a bad sending unit, there were several post that say to ground the wire and it "should" move all the way to the full side of the gauge and that means the sending unit is bad. But then it says if it doesn't move at all the wire is broken or the gauge us bad. That is impossible both scenarios lead to a failure in reading oil pressure.

So the question is with a nice working sending unit what should the gauge read when the wire is connected to ground?

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Oil pressure gauge sensor questions [merged] oil sender

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turbotalon42993

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ist dwa

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