I have a rough idle as well....cylinder #3 misfire by the code....brought to local MB independent..(he said #4 was not firing at all)..He wanted $800.00 for a tune up..."First thing he does" then that may not even fix the issue....Being unemployed I declined the repair...I can do the same tune up for significantly less...

What is the recommended time for this...wires , plugs etc for the car? I would think that 100k miles would be the norm for a car like this....am I wrong?
I will sopend the $200. and replace the wires and as part replace the plugs also....I'm told the Chrysler dealer charges $30 a piece for the plugs..have yet to check that out......I can buy them at Autozone very reasonable...