I have a 04 SCrew and lately when i start it i get a rattling noise that last a couple seconds. Some days it is worse than others and then sometimes it wont do it, rarely but sometimes it wont. It doesnt sound like an exaust leak and i dont know what else to think of.....any suggestions?

 

There is a TSB on the '04's for an ash tray rattle. Kinda obvious if it was the ash tray tho....Your going to have to be more specific as to the location and type of rattle.

 

My 07 would do the same thing.It was a rock in between the heat shield and the catalytic converter.

 

the rattle is kind of hard to explain....it sounds like a rattle/grind mixture like something isnt quite lubricated or something. and ive had someone else start it and it sounds like its coming from the passenger side of the engine compartment

 

Possibly the timing chain tensioner bleeding down are you using a motorcraft oil filter? it supposed to prevent the oil from bleeding out of the tentioner

 

yeah i have a motorcraft filter on and put motorcraft oil in on this last oilchange. had been using wix filter and GTX oil bit switched it up a couple changes ago...