Back home now and getting ready to install a fuel pressure gauge at the secondary filter to see if anything there leads me down a particular path. As for changing the filters? I don't see why or how this has anything to do with the problem as the problem occurred before the changing! Changing the filters was my first step in trying to fix the problem.Now before I install the pressure gauge, I am thinking about disconnecting the batteries for a few minutes and give the ecm a hard boot so to speak! Turning the batteries off doesn't eliminate power to the ecm. It always has power as long as the batteries are hooked to it! I just know when my blackberry gave me problems, the tech people told me to remove the battery and wait a few minutes then re-install the battery and the problem usually fixed itself! Maybe this works the same way! Remember, I DID just install the 4 new batteries and maybe there was a reason a glitch occurred during that time! Whatever it is, I am beginning to think that it isn't something very major. Probably something really stupid! The good thing is, I AM learning from all this! Ace