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Old 12-17-2014, 05:51 AM   #1
Scooby Newbie
Member#: 367296
Join Date: Sep 2013
Default 2002 wrx to 2000 rs post swap issues

Swapped my rs to a 02 wrx, merged the harness myself got the fuel pump controller all properly configured and all. But I startit up and it only runs on 2 occasionally 3 cylinders, the passenger 2 cylinders always run, but the drivers back cylinder sporadically works and I'm getting no response out of the front cylinder. Cam timing is correct, checked that multiple times, have spark, have fuel pressure in the rails and 12v supply to the injectors. But the #2 injector is not being grounded/triggered by the ecu. Checked continuity from the injecto ground wire to the ecu and it checks out, have good grounds for the ecu. Ecu isn't the problem, swapped in a buddies ecu with the same result, cam and crank sensors are all good. What could be causing this? I don't know what to try next besides changing cam/crank gears. Is there a way to test the trigger wheels ont the cam/crank.
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Old 12-17-2014, 08:36 AM   #2
Scooby Guru
Member#: 70395
Join Date: Sep 2004
Chapter/Region: MAIC
Location: Da-boonies,Va

There is a whole section dedicated to swaps. My guess is something is up with your harness. Buy a $10 VAGCOM cable and download Romraider to help trouble shoot the issue. It will allow you to see trigger/switches.

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Old 12-17-2014, 09:48 AM   #3
Scooby Newbie
Member#: 367296
Join Date: Sep 2013

Been all through that, and the resources on rs25 followed brydons guide for the conversion, have a VAGCOM and Tactrix cable Romraider Ecuflash etc, but having a whole host of issues getting the openport to communicate properly.

Checked over the harness quite a few times but haven't found any issues, Makes since that the harness wouldn't really affect it since you really don't merge any wires that directly correlate between the ecu and motor.
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Old 12-17-2014, 06:40 PM   #4
NASIOC Supporter
Member#: 236475
Join Date: Jan 2010
Chapter/Region: BAIC
Location: San Francisco
2002 WRX


nhawks, can you send me an email to support at tactrix dot com so that I can send you a beta version to try? We've made some recent tweaks that should improve things for your year.
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