Oil Pressure To Ecu Question

[Sparkys]

I have an RB25DET Neo in an R32. The oil pressure gauge reads at 8 on idle and goes off the gauge when revved. An oil pressure test showed that the motors oil pressure is spot on, so it's an incompatibility with the 32 gauge and the RB25 pressure sensor.

My question: The RB20 and RB25 ECU pinouts show that oil pressure information is not relayed back to the ECU so it must go straight to the gauge, hence I'm thinking I can just buy an RB20 oil pressure sensor and fit it with an adapter to the RB25 motor, and this should give the gauge the correct reading without stuffing up anything in the ECU. Sound right?

[paulr33]

sounds right, the ECU has no idea on oil pressure

[bubba]

Spot on. I would be getting an aftermarket electric oil pressure gauge anyway...

[2rismo]

I'm thinking I can just buy an RB20 oil pressure sensor and fit it with an adapter to the RB25 motor, and this should give the gauge the correct reading without stuffing up anything in the ECU. Sound right?

Seems you're thinking is spot on, champ!

[Sparkys]

Schweet

Bubba: I have this awful desire to keep the car as close to factory in appearance as possible with the exception of a non-factory paintjob I'd like to get all OEM gauges working as they should. Next problem to solve, the water temp gauge

[Green_s13]

water temp guage is the same thing need to use the rb20 sensor but not the ecu one.

and yeah as the others have said use the rb20 oil pressure sensor and you should be right with the oil pressure, my series 1 rb25 sensor seems to work fine with the dash but i'm sure they changed it with the neo

[STATUS]

Schweet

Bubba: I have this awful desire to keep the car as close to factory in appearance as possible with the exception of a non-factory paintjob I'd like to get all OEM gauges working as they should. Next problem to solve, the water temp gauge

there are two water temp sensors one for the ecu the other for the dash, just fit rb20 water and oil pressure sensors to the neo.

Edited September 27, 2008 by URAS

[Sparkys]

Yeah I read that in the manual last night, cheers Uras & Green S13. It's the thinner of the two temp sensors that I need to replace.