jagarcia89

I'm stumped. When ever my truck flexes it omits a loud loud creaking/crackling noise. Pretty embarrassing pulling in and out of the driveway in my normally quiet neighborhood. I've been told by others it sounds like its coming from the right rear. But its gotten worse and now can't tell exactly where its from. I had a bad rear axle seal so I thought it may be the bearing, so I pulled it apart and despite the other one being fine I replaced it anyways- still noisy.

heres the video please help. 2004 f-150 obnoxious flex creak - YouTube

Oh yeah, and I tried hitting a few spots with silicone lube to see if I could temporarily fix it and hence isolate it no luck. Spots I hit were: All around the leafs and shackles, body mounts, U joints, shock mounts, probably some other stuff I'm forgetting.

Oh yeah and it's got a 6" pro comp kit on it

TylerF150

Great video, but it's got me stumped too, I can't time the noise with the movement of the axle, if you know what I mean.. That's a tough one brother

jrmongi

My old ranger had a similar noise it ended up being noise coming from the spring mounts. Dam caked on mud and rust

jamieford2

I watched the right side and seemed come from there have you looked over both sides very well

diamonbird

I think it's the shackles are in need of grease/oiling or re-brushing.

Disposablehero

Can ya jump around in the bed and have it creak too with the truck in park?

Black05lariat

that's how my 03 used to sound I took it in the mud a lot and it was a lil rusty underneath probably just the leaf springs

jagarcia89

I ordered a polyurethane bushing kit for it today, I'm hoping that will fix it but I'm skeptical. I've sprayed everything down there with silicone lube and it doesn't even fix it temporarily. But we'll see

jrmongi

Tell us how they work for you. I am sure there are a few people here that might find that information useful

Especial86

iTrader: (1)

I just watched the video, which was great by the way.... I noticed you have daylight showing in between the passenger side lift block and the leaf spring... I think you should loosen up the the u bolts on the passenger side and clean the block to leaf surface... It seems the play in there could be the screech groaning noise i'm hearing. If that is loose then what we hear is the leaf spring torquing (twisting) around and causing noise at the shackle and the frame mount..... I'm going to bet money this is your issue... Some dirt is likely going to prevent you from just tightening it down, so you should really take it apart....

GOOD LUCK!