Dave_N

If thats the case, you appearently still have an open IC circuit, maybe not due to interrupt switch but due to a bad connection somewhere or possibly a bad ignition module.

Test the interrupt switch with a multimeter. Find out if it's normally open or closed. If it's the correct normally closed switch, I would install it and retest. It would really be helpful if you had a code tool, since open IC line will set a trouble code 42. I will post how to make a code tool in a new thread.

Dave

wallynt

Dave.

I just checked the new switch with a muti meter and it is normaly open like you suspected. When I disconnected the wire when running this time it did kill the motor. I will pick up another switch tomorrow (normaly Closed) and try it again.

Thanks for all your help. I'll let you know what happens.

Paul.

wallynt

Dave.

Hooked up the new switch and it works fine. Just wanted to thank you for taking the time to explain the process and variables in detailed yet understandable terms.

Paul.

Dave_N

Glad I could be of help.

Dave

Sonny Spectre 30

Dave,

Any idea of how to put together a shift interrupt switch for the Ilmor 625 engine?