Vacuum leak definitely IS a possibility, but Chrysler never used a Mass Air Flow sensor. Unlike GM and Ford, Chrysler is the only one that can make an engine run right without one.
The major hint is the "Cylinder # 6 Misfire". If there is a problem with spark, the unburned mixture goes into the exhaust. You might smell some unburned fuel out the tail pipe or see some black smoke. The extra fuel is hard on the catalytic converter too.
But guess what the oxygen sensor reports to the engine computer? A LEAN condition! Oxygen sensors detect unburned oxygen, not fuel. Since the computer thinks the mixture is lean, it lengthens the amount of time the injectors are turned on. The result is too much fuel entering all six cylinders, and you still have the unburned oxygen from cylinder # 6, so the computer still thinks the mixture is lean.
The engine computer is telling you the problem, (a misfire), and the result, (one side if the engine's exhaust is lean). Fix the cause; don't go wildly throwing parts at the result.
Thank you for supplying good information.
Friday, April 10th, 2009 AT 4:15 AM