Re: 94 caravan, faulty coil pack.
The coils on the Caravan (I am assuming you have a 3.0) should have 1-2 Ohm resistance on the primary side. When running your current should be approx 6-8 Amps. You should have 1.55 to 2.0 ms on time.
Use a lab scope with a low amp probe and check rise time and max amperage flow.
In cases like yours you will usually find the module or PCM has a bad current limiter allowing excessive current flow, which burns up the coil pack. Put on a new coil pack and it will run again --- until it burns up. The problem with multiple coil failure is usually not the coil --- you are fixing the effect and not the cause. I suspect you are flowing 11-15 amps. Another possibililty could be a bad ground, but that is another diagnostic story.
Stan
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94 caravan, faulty coil pack.
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