Ok thanks. Ok, now i have an even bigger problem.. I call 2 ford dealerships, one had no idea WTF he was doing and quoted me the 1600. I called another one, and told him what i heard, and he said it could be the jackshaft cassette? He said the tensioner would run me about 500, and the jackshaft would run me 12-1500 bucks. He said if i hear the rattle on the left bank, its the tensioner, but i hear it in the middle on top of the motor. Im having it lookde at on monday by the dealership for free, and then im gonna call someone else to do the job probly. But this rattle is new, and it scares me cause i have 131000 on the clock, and really dont want to jump the timming and bend a valve. WHat do you think it is, and do you tink its safe to drive on it till monday because i styill need to go to work and school and what not. I might use my 5.0 over the weekend once i replace the alternator. Thanks, this is becomming a PITA! Big time.