[xj-s] 6.0L V12 idle woes -- finally, some progress, sort of

[sbobev (Steve)]

I would like a picture of the rear coil wiring harness at the coil if anyone has such a thing. Mine has one space vacant on the terminal and some sort of fuseable link there.

Welcome to Jag-Lovers and thank you for the interest in my (now 7 years old) thread on this subject.

Coil on bank A has one more wire for the tach.
Some more discussion on the subject here:

No start issue V12

IIRC, this topic has been covered multiple times, Kirby. “Trigger” signal for the Marelli is generated by the Marelli ECU itself. Takes CPS and flywheel signal inputs for that, here: [Screen Shot 2020-07-31 at 8.18.44 AM] Then, the Marelli ECU in the passenger footwell, via pin #24 (shielded wire, not coax - shield on pin #7) send the “speed signal” to the EFI ECU in the trunk. Here: [Screen Shot 2020-07-31 at 8.24.44 AM] I don’t think the “white stinkin’ coax wire” which we know for th…