Wiring help 97 legacy obd2

blackbuka Learner Dubber

11 posts · joined Aug 2009 · 7 Aug 2011, 3:30 am

#855743

hi all, I have a harness and ecu from a 97 legacy gt auto and installing it in my 67 vw bus. I have 98% of the harness complete but Im curious on the (fuel tank pressure sensor, fuel temp sensor, fuel level) these go to the ecu but how do I simulate them? Any help would be greatly appreciated..
Thank you for your time

ratbug aka toddy101

439 posts · joined Jan 2003 · 8 Aug 2011, 8:30 pm

#856059

The fuel temp and level will be a resistance, so for the purpose of keeping the ECU healthy, do you have a workshop manual for the 97legacy, if its got the resitance values, go halfway and put a resistor in there.
The pressure sensor will be a voltage, maybe find what voltage input to the ECU it should be at atmospheric pressure and experiement by putting a resistor to ground until you get around the right voltage.
I'm not up on the legacy's but if its OBDII I'm wondering if the ECU is flashable, in which case you could just disable the inputs using the romraider software. Have you got a photo of the ECU?

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blackbuka Learner Dubber

11 posts · joined Aug 2009 · 12 Aug 2011, 2:44 pm

#856683

Thank you for your reply, These tips will be very helpful