no spark at #3-4 coil 1994 legacy

[bluesubaru]

I just installed a new timing belt and have checked the Crank angle sensor, the cam sensor, the coils and the ignitor I have 2 1994 Legacy wagons so I swapped all of those components to the other car and it runs fine...so I went looking for the ecm, but it's not under the passenger floor as stated in the Hanes Manual, and the wiring diagram is not similar to my cars. Any ideas greatly appreciated.

I am not good with computer searches, and can't find my prior post, which was about the same issue, but a bit longer.  I saw a few responses a week ago, but now I can't seem the find the thread...any help with that?

Thank you.  reply to robertooroark@gmail.com 

I'm in Rohnert Park CA,  and need to find someone who still works on such old cars and might know what I'm missing...

[lmdew]

If both cyl. are not sparking, most likely the coil pack.  I you need one, I have some spares.

Your ECU is up under the drivers side dash if my memory is correct.

Did this start after the maintenance?  You may have damaged the coil wiring or connector.

[heartless]

yup. should be up under the dash, on the far left side..

there is a section of dash panel under the steering column that is easily removed.. pull that for better access.

 

[Rampage]

Swapping all those parts only leaves 3 things to check. ECU, wires and tabs on the crank sprocket.

If you swap the ECU and it works in the other car, that leaves the other 2 things.

The wires from the ECU to the Ignitor. Or, the 6 tabs on the back of the crankshaft sprocket that trigger the crank sensor.

I'm looking at a 92 FSM (can not find a 94) and Turbo and Non-Turbo use a different ECU. The pinout is different.

I have the wiring diagram for ECU to Ignitor wires if you need it.