A bad camshaft synchro was driving me nuts with it's chirping and recently was causing some bucking/missing from the engine at high rpms. There was a TSB on this...google it, it's there (search for "ford 3.0L cam synchronizer tsb"). This worked out well for me, but I'm not a mechanic. I have no professional mechanical training. So, embark on this task at your own risk. I will not be held responsible if you screw something up on your vehicle. There's your disclaimer...you have been warned.
ford, ranger, taurus, camshaft, synchronizer, 3.0L, Vulcan, engine