Oil pressure sensor - incorrect readings
Hey folks,
I have an oil pressure sensor and gauge that i am plumbing up to my 300TDi.
I have ran a wire to the gauge inside the cab yet the gauge is reading too low an oil pressure (11PSI!) than what the engine actually has (tested at about 40PSI-60PSI recently).
If i move the gauge to a shorter length of wire (approx 50cm) the gauge reads more like what i would expect.
I am presuming that the resistance of the length of wire is causing incorrect resistance readings from the sensor?
I am not sure what to do about it though. The gauge of wire from the sensor looks pretty good to me - and is actually thicker than i wanted to use but it was all i had left in the shed. I can't really make the wire much thicker?
Has anyone else had this problem? The gauge did not come with a pre-wired loom (that it could have been calibrated to).
It is just some random branded gauge and sensor that i have used in the past to check oil pressure after rebuilds (connected with a really short bit of wire to the sensor).
Any thoughts? Thanks!
97 Disco 300Tdi, front & rear diff locked, hybrid turbo, full width intercooler, cranked front & rear arms,
2” dobinson coils, terrafirma shocks, HD steering arms, diff guards, rocksliders, domin8r winch, tank guard
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