Coilpack voltage question(s)

[Raxephon]

FSM states that the ignition signal is:

70mV @ Idle0.14V @ 2000 rpm

What can I expect if it was:0.2V @ Idle0.5V @ 2000 rpm

What problems can I expect to occur? Will it fry the coilpacks? Will it fry the ecu? Will it cause error codes or gremlins?

Any input would be appreciated.

[Raxephon]

*Bump* Anybody have any insight into this?

[elwesso]

Where are you taking this measurement... at the ECU I presume?

[maxnix]

I think the coil pack is a passive device so you would just get more voltage at spark gap. Maybe Dennis will chime in as he is the BSEE.
Modified by maxnix at 10:09 PM 9/12/2006

[Raxephon]

Where are you taking this measurement... at the ECU I presume?

Yes, @ the ECU.

[Q45tech]

The ecu provides a shift in base voltage to the switching transistor for each coil.................zero > to something positive............the coil fires when the primary current collapses base goes to zero. Mismatching the transistor with a different coil [different primary resistance] can exceed transistors capacity.

http://www.asashop.org/autoinc/feb2003/ ... ct...shtml

http://www.picotech.com/auto/w....html