I have an '02 T&C with the 3.8L engine. Was running great until we changed the sparkplugs, now it's running hard with a noticeable engine miss. Have since changed the spark plug wires and ignition coil. With no change. I'm thinking since it started with the spark plugs circling back to them. When my husband changed the spark plugs he noticed the ones in the back were longer than the ones in front, can this be right? It ran fine with them that way for years! The ones we replaced them with are all the same size and now it misses. Thanks!

 

what kind did he put in there and no they should all be the same size front and back.

 

He put in Autolite. The front three he took out were also autolite and the back three were champions. I read a later post about sparkplug brands, and we switched them all out with champions, it seems like that was the trick. So far she's purring, keeping my fingers crossed. Thanks Chrysler Forum!

 

who ever did it last time did not want to change the ones in the back that's why and always use champion