What would cause the ciol pack on 99 dodge caravan to short out n miss fire after detecting two exposed wires on the electrical connector to the coil repaired it but still shorts out a replacement coi

consider substituting the ECM and checking all of the electronic harness connections

check the ECM

Sounds like he has the wiring missed wired at the coil pack, or the wrong replacement. There should have been a wiring diagram that came with the coil pack, recheck, I think you'll find the trouble is there

coil pack voltage may be good but coil may not be putting out voltage check with spark checker.also fuel injector may be bad if all good do compresson test on cyl

what i would do is to trace all the plug wires to your ciol packs

This is a quick explanation:

1996 Dodge Caravan
3.3 liter




The big rectangles are referencing the engine, the cylinder associated to it's "firing" are the colored circles, and the are also the location of the spark plugs....the smaller lego-looking block is your coil pack. The spark plug wires run from the coil pack to the spark plug on the engine. The wires match 1 to1 or black to black...and so on....

When these are matched to each cylinder/spark plug and it's wire leading to the matching coil pack position, this is it's "firing order". If one of the wires is "crossed" meaning, not 1 going to 1, then the engine will "miss-fire".

FIRING ORDER PER 4 CYL.

http://anubiscycle.com/fixya/order98caravan.png

It could very well be a bad coil pack,or you have low compression in that cylinder.If the compression is good then go with the coil pack,if not you may need a head gasket or an intake manifold gasket.

A P0306 code means that the the ECM has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #6.

A code P0306 may mean that one or more of the following has happened:
Faulty spark plug or wire, Faulty coil (pack), Faulty fuel injector, Burned exhaust Valve, Poor compression, and Defective computer. 

Check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the Caravan, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). The number six cylinder is the one towards the radiator and drivers side. If you are going to change all the plugs and wire keep me posted, be glad to help. Good luck and hope this helps, P0300 just means multi miss fire. 

Number one and four are fired at the same time on a single wire from the PCM. Look for it to be intermittenly grounding somewhere along the route to the coil. You can wiggle the harness with the engine running to see if you can duplicate the miss. This will help to localize the area where you need to look closer. Look at areas where the harness crosses brackets or lays across areas like the transmission. Long term vibration can wear a small hole in the insulation causing intermittent problems on any circuit. I hope this helps.