I have a 2004 Dodge Caravan 3.3 V6 that I wish to tune up. I will replace the plugs and wires but, do I need to replace the coil pack? It hasn't given any problem-its just that I bought it at 65000 miles and have only changed oil as schedueled. I think a tune up would increse my gas milage.
Does a coil pack lose its power over time?