EMI Problems?

[ECMnut at aol.com]

In a message dated 11/25/99 9:36:27 AM Eastern Standard Time, 
RRauscher at nni.com writes:

> Injectors are noisy by default. Whenever the power to a solenoid is
>  cut, a reverse spike is created. The ecm has zener diodes to suppress
>  this spike.
>  
Mopar Neon ECU actually examines these spikes to determine
if any of the injectors might be sticky, and sets a code if the
spike doesn't occur as expected..  Not sur about other Mopar
ECUs, but I bet they do it too.
Mike V