what motor is in your truck? It is a Triton V-8 (5.4L)
tell me the mileage and i will let you know about the rattle
If its chain driven, Could be the timing chain tensioner! Does it also have a rattle driving the vehicle at around 2000 R.P.M?
You need to check all the exhaust pipe hangers, one of them is letting the exhaust rattle against something. Also check muffler heat shield it could also be loose. When transmission in engaged in any gear the engine is torqued to the right, so that is moving the exhaust ( it is attached to the engine so it moves with the engine )into a position to rattle, in neutral the engine is sitting evenly in its mounts so no rattle. May want to check engine and trans mounts too.
With mine, it tends to be a signal that it is low on oil. Check your fluids and top off any that are low and see if that helps. --------------------------------------------- Check your tensioner and pulley
Many different things can cause a rattling noise in a Mazda tribute. Stark by checking the engine belts and all brackets for anything that could be loose and causing a rattle.
Because there is something wrong with the accelerator. Is the rattle coming from the tire? It could be that you just broke your wheel studs and your tire is hardly holding on! Do not drive this car!!!
TOO LOW OF OCTANE.TRY 89 IF STILL RATTLES GO TO 91 OR 93 OCTANE. U WILL DAMAGE YOUR ENGINE WITH TOO LOW OCTANE.
From what I can tell, the rattle is most likely coming from your alternator, Take It In!
Harmonic balancer
Check heat shield on catalytic converterTry going to a higher octane fuel
Diesel engines rattle. They all do.