Horrible sound under accel, 98 4x4

In first gear mostly or when torqued under load, there is a horrible squeaky, chirpy noise, almost sounds like the drive-shaft is is rubbing on a head shield under load. Obviously I Checked that, and also all exhaust brakets, lubricated the u-joints and slip yokes.... any ideas on where I should check next?

 

Check the rear axle, see if it's twisting and putting the u-joint under stress.

 

JW, Welcome to TW.

 

So the noise has gone away... I was driving home in some flooded roads (love the taco) and in the next morning the noise is %100 gone, now I don't know if it was the grease working it's way into the joints or what but I'm happy, thanks.

 

Congrats! And welcome to the family!

 

Maybe some Dirt that got washed away or Rocks go dislodged.

I would inspect the truck again. Check the Gear fluid, Brakes, And bushing.

 

I just recently got the truck, it's in awesome shape 150 kms on the clock. so i did the timing belt, waterpump and engine coolant.

next I'll get some fresh gear oil for both diff's, transfer and tranny.

the transfer uses

$30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90?

 

My truck has done that before, it would only last for a few seconds then stop. I never did figure out what it was, but I suspected the carrier bearing.