No Spark - Replaced all sensors

[shnicht763]

I've replaced the ignition control module, and crankshaft sensor and still receive no spark in any cylinders. It turns over just fine. I had driven it home and parked it, w/out any problems, came back three days later, and it cranked and cranked w/out starting. Stuck a screwdriver in the plug wires, and no spark to any cylinders. What am I missing to get this thing to fire?

[Blue Bowtie]

What year? What engine?

The ICM works with the PCM to time and trigger spark. The PCM needs to receive signals from the crank and cam position sensors. The PCM will then signal the ICM to fire the coils. Replacing the ICM may eliminate that as a possible problem, but the rest of the circuit still needs to function from the PCM to the coils.

Since the system uses a wasted spark scheme it is also important to have clean, dry spark plugs to be certain that spark energy is not simply shunted to ground by a shorted/wet plug and that the plug wires are in good condition.

[shnicht763]

Its a 95 2.2 single cam

[spudracer73]

Check the ignition coils first off. If you are trying to check spark doing the old screwdriver trick that could cause some damage, even on an OBD-I vehicle. It could also be the ignition module. I would try to diagnose before sinking anymore money into high ticket items. Get a spark tester and check to see if you are getting any spark. If no spark is present on all four wires then it is most likely an ignition module (granted the coils don't have 150000+ miles on them)

[shnicht763]

it has no spark to any of the four cylinders.. the ignition control module and crank sensor were already replaced with brand new units and it still does not have spark to any of the cylinders.