Rear end shakes when accelerating

A couple days ago my truck's rear end has started shaking when i accelerate. It doesn't shake the whole time when accelerating, just for the first couple seconds. It feels pretty obvious that it's shaking from the back. I don't have a lift, and it's an automatic. Is it transmission? Differencial fluid? Help!

 

anybody?

 

Calm down.

More info. From what speed to what speed does the shaking occur? Is it during all acceleration or only from a dead stop?

Based on your cryptic description in the first post, I'm betting on axle wrap because your leaf springs are probably shot, considering their age.

 

only from a dead stop i'd say between 0-10 mph

 

Check your carrier bearing (do 1st gens have those?) for excessive play.

Otherwise, I'm betting axle wrap. Probably time for some new leaf packs.

 

okay thanks for the help. i actually made a thread a little bit ago regarding worn out springs. heres' the link to the therad. Someone posted a pic of there's (and mind looked a lot like his) and he said he was sick of the axle wrap, and new leafs fixed it.

Is there anyway to test that a truck definately does have axle wrap?

 

Yeah, replace the leaf springs and see if it goes away.

Kidding. Sort of. Not really.

The only way to really tell for sure is to video the leafs and axle while driving...not terribly easy for most folks.

 

Grease your U-joints lately?

if not give em a few squeezes of the good stuff and see if that helps.

 

Give everything a good shake test and look for excessive movement in bearings and bushings. Check driveshaft for missing balance weights. Give it a good inspection and you'll probably find the cause.

 

I greased the u joints and it didn't seem to help. Do ya'll think it's the leaf springs? Do yoiu want me to post a pic of them?

 

Go ahead and post a pic.

 

Yeah, they're definitely frowning. They should curve upwards, not down.

I'm pretty sure you're axle wrapping.

 

ok where is the cheapest/best place to buy new springs

 

Im a mechanic by trade, those springs are most definately shot. if they were working, they would curve down, yours have curved upward and look dangerously close to snapping! Replace em and your truck will definately thank you for it.

 

A lot of places sell replacement spring packs.

Deaver, Alcan, Wheeler's, Old Man Emu, All-Pro all sell fine leaf packs.

Personally, in terms of purchasing, I like Wheeler's Offroad.

 

alright thanks guys i really appreaciate it

 

are new leaf springs something i would be able to put on myself?

 

yes check in the 1st gen forums and there is a write up somewhere

 

for the ones on wheelers, they're 450. Does that come with both the left and right side, or just one side?