Ignition Coil Troubleshooting

[cfl_cherokee]

Got a 96 cherokee 4.0l a couple months back that doesn't have spark. Been through the usual suspects (CPS, NSS, ASD, Fuses). I have already had to repair some wiring due to rat damage but have fixed everything I can see. I've replaced the CPS and ignition coil with MOPAR parts that pass the resistance bench tests. I'm wondering if anyone could put a volt meter to the plug going in to the ignition coil and let me know what voltages the two lines get. I'm currently getting 9.97v through the green/orange and 11.54v to the black/grey. Thanks in advance

[4.3LXJ]

Current to the coil would be 12V

[cfl_cherokee]

Any idea what the switching signal is from the computer?

[4.3LXJ]

Switching signal is from the cam position sensor in the dizzy

[cfl_cherokee]

The dizzy?

[4.3LXJ]

Distributor :D It does go round and round inside. :D

[cfl_cherokee]

I swapped out the dizzy and cam sensor from my buddy's jeep. No change.

[4.3LXJ]

How did you determine you are not getting spark?

[cfl_cherokee]

I have an inline spark tester and I tried the old fashioned, hold the plug on the block and have some crank

[4.3LXJ]

Take the coil wire off the distributor and hold it to the block and crank

[cfl_cherokee]

I'll give that a shot tonight, thanks for the tip