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Old 01-21-2012, 09:53 PM   #1
fateo66
Scooby Specialist
 
Member#: 130997
Join Date: Nov 2006
Location: Denver, Co.
Default I need a little help trouble shooting my ignition failure

Recently I was out at the track having some fun in my 97 Impreza which has a 94 SVX eg33 swap. Partly through a lap the ignition started cutting out. If you watch the tach you can see that it is referencing what the ignition is doing and not the actual RPM's of the car.

Thus far I have swapped out the ignitor, ECU, and cam position sensor from another SVX. I also checked for power at both the ignitor and the coilpacks and cleaned off both crank sensors.

At this point I decided to check out the wiring, thinking that the harness merge had something to do with it. So I checked for continuity from both crank sensors, the cam sensor, the ignitor and the coil packs to the ECU and they all ring out.

Obviously I am missing something here. What else could have failed that would be an input for the ecu telling it not to send out spark? Input would be greatly appreciated.

I've attached a video from the track along with a schematic of the EG33 ECU.

http://www.scribd.com/doc/78980268/SVX-ECU-p1

http://www.scribd.com/doc/78980271/SVX-ECU-p2

http://www.scribd.com/doc/78980273/SVX-ECU-p3

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