I can't understand that, The truck is my wife's one, This truck never had the kick down engaged...I almost don't drive it! The check engine on the van lit up 2 months ago, I didn't bother as this fricken thing can light up with around 100 causes, so as the truck is aging...and the truck runs perfect. That was at the time! I took the wife's truck yesterday, as my car was lifted to get donuts half a mile away. The truck did run perfect. Tonight, There's a terrible hammering noise coming from the engine. The mechanics next door told me to scrap or exchange the truck, it needs an engine! I do a lot of mechanic myself and the Chrysler-Dodge engineers should not had received a diploma, so many stupid technology & assembly choices! Fu*&* them! This is my last ever Chrysler-Dodge-Jeep!