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Thread: ODB1 ecu help and advice needed ASAP!!!!!

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Posts: 1-10 of 18
2013-06-26 16:53:08
ODB1 ecu help and advice needed ASAP!!!!!
Ok i'm in a jam here I have a 1993 nissan sentra se-r with a sr20ve swap i sent an ecu i had laying around to jktuning to get chipped everything was great on that end and the turnaround time was less than a week. I went to fire the car up and it started and ran fine no problem but my speedo is acting as my tach and my tach does not move whatsoever when i rev the car the speedo moves instead of the tach. I went on the jwt website and checked the numbers on the ecu and it says its from a 92 se-r what i can remember is that the 91-92 se-r's are mechanical speedo, the tach is on the left and the fuel and temp needles move left to right and on the 93-94 se-r's are electronic speedo the tach is right and the fuel and temp needles move up and down. So my question is this........can i re-pin the 92 ecu to work with my 93 se-r and get my gauges working correctly or do i need to find a 93 ecu and send it out again? Just shot a quick vid help me please lol.

Last edited by Scrildo on 2013-06-27 at 01-19-44.
2013-06-26 21:20:00
They look the same to me. Tach on pin #2, VSS on pin #32.
2013-06-26 22:35:14
Just curious why the 91-92 ecu would have a vss pin when it has a mechanical speedo? Oh well any other ideas? I'll post a vid of my issue as soon as i get home.
2013-06-26 22:49:16
I know my 92 ecu/NX still reads speed. How, I don't know, but it's required for launch control.
2013-06-26 22:57:28
In one case, the VSS signal is generated by the cable driven speedo. In the other, the VSS is at the transmission.
2013-06-27 01:20:31
Just added video up top.
2013-06-27 13:19:05
Video is private, so can't view.
2013-06-27 23:19:16
Ok I fixed the link it should not be private anymore.
2013-06-27 23:39:07
Looks like a wire crossed somewhere???
2013-06-28 00:01:55
Originally Posted by OnTheChip
Looks like a wire crossed somewhere???

How is that i didnt rewire anything i just dropped the motor in and plugged up what needed to be plugged up i also tried a known stock 93 ecu and it did the same thing could my cluster be bad?
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