green machine

when taking off from a stop i sometimes hear a clunk sound from the rear end. i think it might be a u-joint but im not sure. any suggestions?

Seumas77

start with you u-joints then go down the line. But it sounds like a u-joint about to crap out on you, and why wait ti'll it happens on the freeway? Check it now!

Good old Bill

Is noise present when shifting into reverse? Sould get the same noise if U-joints are going out. Double check by turning drive shaft by hand. Don't forget, engine off ---in neutral---parking brake on!

Quixxx

You're drive shaft probably just needs to be lubricated with a teflon based grease where it mates with your transmission. It cost $20 up here in Canada.

DaleD

Mine clunked for quite sometime, but when it started to squeak when I started
rolling I replaced both front and back joints. the back ones was shot at 150k
it cost 32.00 labor at the machine shop to have them both pressed out and about
24.00 for the joints. Replace with types that have grease fitting, you will glad you did.

Bubba-01

Thanks, my new (to me) 89 Lariat makes a similar noise. I'll check the u-joint tomorrow