heys guys i havent been around for awhile. the problem im having is my 2004 sohc engine has developed a rattling niose at and above 2700 rpms. it doesnt do it all the time just most of the time. im thinking its the timing chains but im not for sure. does anyone know or have any ideas of what it could be. the truck as about 130000 miles on it.
thanks tyler

 

I am of little help, but I will say that my mothers 1999 explorer does the EXACT same thing, an intermittent rattle that happens alot, but is hard to replicate when you wanna show somebody. For her it is a very light sound and is hard to notice if you have the radio/AC on.

 

Same problem here..Mine has 90,000 miles on it..

 

Does it sound like marbles in a tin can? Could be your timing chain

 

Yeah, thats kinda how mine sounds.

 

You may be about to have a serious issue. I know two people who have had their tensioners break, one had to spend over $1K at his friends shop to fix it, the other had to buy a new engine

 

timing chain replacement at a Ford Dealership is going to cost you about 1100 bucks.

 

id do it myself so id save money there. if that happens il prolly just do a 5.0 swap lol

 

good luck im pretty sure you need some special tools that are very pricey

 

I think mine is a Bearing in one of the pulleys.. I noticed it more this weekend when I had to replace my upper/lower thermostat housing. PIA

 

I started noticing this about a week ago on the explorer. Going to take it to ford this week and see whats up.

 

thats what i thought about doing. im a tech myself but this niose has me stumbed. sometimes i think its the timing chains aand other times i done

 

Shortly before I got it. It had work done on the timing chains, but I dont know what all was fixed. That's all I can figure it would be.

 

That's the timing chain noise. Tensioner guide taking a dump possibly?

 

thats strange i have the same year dont recall hearing that sound

 

Not every engine gets this problem. 01-02 4.0L is very prone to this and I've never heard a rattle from mine and I'm close to 120K miles

 

You do need some special tools. but you can make do with only buying one. and that's the 27mm 6 point. a 12 point socket will mess your day up. ask me how i know.