Have 2002 Jeep Grand Cherokee 4.7 V8 with a rough idle. I have been trying to figure it out for the last month or so with no luck. Now it is starting to get worse so I am ready to let someone else figure it out. Need someone that can actual diagnose the problem (like scanner danner) not just throw parts at it to "fix" it. Anyone have a great diagnostic mechanic, preferably east county.