Have a 2005 Grand Cherokee Hemi which misses on low acceleration like it has a bad wire. Happens since new and now 3000mi. Dealer put scope on and test drove. Says it is normal transmission hunting and there is nothing wrong. Was test driven by their district mechanic who also said it is normal. A transmission hunts at 65mph. I would hope it found the 5th gear by then.
I'm sure the problem is the engine and would appreciate feelings as to where to look. Can the dealer computer see a bad wire or coil? Is it throttle body injection or high pressure direct to the cylinder? Problem is at cruising speed or low acceleration only. Can feel nothing amiss at heavy acceleration.