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Two posts in one day after about a four month absence?! I need to get back to work. :o( My 2012 TC idles a little rough and idle appears (to me) to be too low (Looks like about 700 rpm.) I am thinking that a coil pack may have failed or may be failing. Not familiar enough with these to know if a sick coil pack will cause these symptoms. Truck has been running this way for about a month and has not gotten any worse. Some questions: 1. Is there a simple adjustment on idle? If so can you describe the process? 2. Are there any coil modules on the market which should be avoided for reasons of quality, compatibility, performance or such? 3. Am I barking up the wrong tree as regards coils and idle problems? (I do understand that there are probably a hundred things that could cause a rough, low idle.)