I just completed swapping my JSPEC T2 engine into my 1991 NA using the NA harness.



- The car turns over just fine, but I don't get any spark when I put a screwdriver in the plug wire end and held it close to a known ground.

- I have power to the coils.

- I've checked things out with a scope and found that the ECU isn't sending a signal to the coils (duh).

- I have checked all my connections and the continuity to the ECU is good.

- The main relay works (i hear it click).

- I have tried 2 ECU's, and I don't believe that they have shorted out.





So, what all could be holding the ECU from allowing it to spark?



Are there any goofy sensors that I might have missed? I still need to connect a few wires on my transmission, I also have a couple unknowns in the engine bay but they have no connection the the ECU.

 

I was also wondering if removing the acv was a good idea or not. I noticed that there is a number of vacuum lines coming off it.

 

sounds to me like your CAS is shot.



kevin.

 

The scope picked up waveforms emitting from it, but they looked a bit sketchy. The CAS is definitely high on my suspect list though.

 

check the resistance of the cas. i have now had 2 go south on me. one was just out of speck and gave me a irratic spark the other was way out and no spark