Ignition Module Problem
in 912 / 914 Technical Questions
13 years ago
I have a 912UL with 140 hours. Noticed engine was running a little rough at idle (1800-1850rpm). Normal shut down proceedure is to turn off the B module followed by the A module. When the B module was turned off engine shutdown, further investigation indicated the A module not functioning at idle.
I then did an ignition check at 4000 rpm and observed the following: With B Module off 160 rpm drop.
with A module off 0 rpm drop. I checked the ignition switches and wires to the modules and found them to be functioning normally. I have started looking for broken wires but have found nothing at this point.
Has anyone encountered this issue and were you able to detemine a cause?
Does anyone know of a ground test method for the ignition module?
Any suggestions would be helpfull.
I then did an ignition check at 4000 rpm and observed the following: With B Module off 160 rpm drop.
with A module off 0 rpm drop. I checked the ignition switches and wires to the modules and found them to be functioning normally. I have started looking for broken wires but have found nothing at this point.
Has anyone encountered this issue and were you able to detemine a cause?
Does anyone know of a ground test method for the ignition module?
Any suggestions would be helpfull.
