wink8705

i have a 2006 f150 supercrew and when i turn left i hear a popping sound coming from somewhere behind the cab. it only pops one time during a left turn. what do i need to do to fix it? does anyone know what it is? or where its coming from?

thx guys mike

ATOM

behind the cab? are you sure the noise ain't up front? not much can be popping in the rear

wink8705

im almost sure its coming from the rear end. when i turn left it sounds like the sound is coming in the back window unless the noise is coming up through the bed and the cab im really not sure what it is any advice would deff. help haha bc i dont like when my truck makes weird noises

wink8705

i wonder if its something to do with a leaf spring or spring hanger

rplatt56

also may be the clutch packs in the rear end. Mine did the same thing until i got them replaced under warranty.

wink8705

i think im just gonna take it into ford next week. everything is still under warrantyuntil 75,000 and its only got 38,000 miles on it so i think il just leave it up to them. its just bothering me i want to know what it is

ATOM

oh well that i wouldn't even care, lol, let them fix it, lol

wink8705

ya ur right i paid for the extended warranty so now its my turn to get my moneys worth lol. and while their at it they can fix the recalled brake booster vacuum hose haha

sixtsix

I had the same problem in my '04 except my warranty was done. For those who have this noise from the diff and no warranty left, I added another bottle of posi additive. It took a couple of weeks but the noise has been gone for a year now.

xJimbos

Just saw this post. My truck does this too. It pops when turning either left (but can be to the right as well), just once, and sounds like somethings bumping the side of the bed. It usually happens when it's cold outside. What is turned out for me to be was that the leaf springs needed silicone lubricant sprayed around the leaf bushings. You can just spray the heck out of them or... the best way to do this is to jack up the rear end then take something like a crow bar (WITH RUBBER ON IT, DO NOT USE METAL ON METAL) or something to that effect that is lighter than steel and pry apart the leafs near the bushings and spray some lube into them. If you use something metal on the leafs you can scratch off the rust protection that is covering everything and that will eventually suck.