I have a 2001 Dodge Caravan Sport V6 3.3l flex fuel van. It is idling rough and the check engine light comes on. The diagnostic says multiple misfire. I replaced the spark plugs and wires but it did not help. It seems to get worse when I turn the a/c on. I can do minor work to the van and I'm hoping I can fix the problem. Please help.

 

try cleanin the injectors a good scan tool can tell you the cyl that are missfiring

 

I replaced the ignition coil and it works great now.