Fwd: eddy current brake

[Markus Strobl]

> Markus Strobl <eusmsrt at exu.ericsson.se> Wrote:
> | I have a '96 GM LT1 V8. It has the following sensors:
> | 
> | Crank trigger: 4 positions. ONLY used for misfire detection. This was 
> first
> | introduced in 1996 with OBDII. 
> 
> Interesting.  Any idea how this works?
> 
> --steve

They just look for uneven acceleration. That is, one pulse would alway come
slightly delayd if that cylinder is dead. The misfire indications are
put in a register in the PCM. Each cylinder has it's own register. If there
are too many misfires in a given time, it set a code and flashes the
service engine light. 

Markus