Hey everyone!
I am having some issues with a 1994 L400 V6, ignition coil pack #3 is not firing! Power to the coil is ok and the coil has been swapped with a known good coil pack and #3 ignition coil does not fire still. it would appear that the ECU is not sending a signal to the power transistor for ignition coil pack #3. The confusing part is that I have swapped out the power transistor and ECU from a 1996 L400 with no change, each component individually and also together. Wiring resistance is OK at 0.4 ohms, I am getting a constant output of 0.045v from the ECU to ignition coil #3, #1 and #2 get 0.300-0.400v at idle and increases with RPM(approx 0.600v around 2000rpm).
Does anyone know if there is a certain input to the ECU that will override firing one of the coil packs? I thought possibly excessive knock signal shutting down a cylinder but there is only one knock sensor so I am not sure if it would do that. A bad cam or crank sensor would affect all coil packs, throttle position sensor would affect timing which again shouldn't single out one coil pack.
Dead coil pack
Mitsubishi Delica L400 production commenced in 1994 -- After much anticipation, the L400 arrived on Canadian Soil in 2009!
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- Posts: 3
- Joined: Tue Jun 12, 2018 12:46 pm
- Member's Photo Album: http://www.delica.ca/Photos/
- Vehicle: '94 L400 PF6W
- Location: Edmonton
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