I have and continue to buy FSM for all of my vehicles, they can be a great source of information, however you have to remember that they were written for factory trained techs who were surrounded by other techs of varying degrees of experience, therefore any issue that want not understood could be clarified. My point is that the FSM isn't always clear and can require some interruption from time to time, that is where this forum comes in. I have been working on Mopars since I was 14 (41 years) and I still find a lot I don't know and have to resort to the FSM or this forum.
