rattle from engine at 2500rpm and over

[nemesis]

hi i have 4.0 v6 explorer with 60000 miles

im a little worried about the noise coming from the engine at 2500 rpm and above its almost like a rattle of some kind. gets louder the faster u go. there is no rattle when u rev in park only when the truck is moving. ive taken it to my local ford dealer and they havnt a clue. theyre soloution is to strip the engine and have a look ??? sound too expensive for my pockets

im in the uk and they dont have much experiance with the explorer so u guys are my last hope. any help would be much great!!!

 

[elkhunter]

Are you sure it is coming from the engine? It could be the catalytic converter heat shield, cracked flywheel, u-joint, or a lot of things. Can you pinpoint it a little better, like the sound. Clunking, tinny rattle, etc.? Does it do it in reverse? It could be transmission related and either Brain or Glacier can help you there.

 

[nemesis]

yes its really difficult to hear where its coming from. because it only comes when in motion. and the noise is a fast tick tick kind of rattle hope that makes some sense. everyone who has heard id seems to think that its coming from the engine

 

[MDPuckett84]

Is it the SOHC? Kinda sounds like the timing chain tensioner if so. Mine could easily be heard moving but seemed harder to hear in park for some reason

 

[Eneurb]

When the chain tensioners are starting to go, they only make noise when under a fair bit of load. But not to worry, they get worse after time.