i just bought a 91 bmw 325i. after about a week i noticed a whining coming from the rear end, accompanied by a clunk that would occur when taking my foot completely off the gas while driving and pushing down on the gas, i didn't have to push it hard, just a little made the clunking noise. today i changed out the fluid which has a weight of 90 with 80w-90 fluid. it seems like the whining noise has quieted but i still have the clunk. could the two be related? i also have changed the brakes and checked to make sure the calipers compressed upon pushing on the brake pedal just to rule that out. could it just be the bearing i wonder?How can i tell if my differential is going bad?
check u joints if you hear a clunk not good so best you go to a shop have it look atHow can i tell if my differential is going bad?
check your u joints. when you changed your fluid, did you take off the cover on the diff to check your gears?How can i tell if my differential is going bad?
if it,s a rear wheel drive then the u-joints are in the front and the back on the driveshaft. the clunking noise you might check the nut on the pinion gear.How can i tell if my differential is going bad?
check drive shaft and trans mounts
