1988 f-150 2wd auto rearend clunking + reverse low speed turn =tire shuddering
 

help iam experiencing a loud clunk noise from rear end while turning at low speed reverse seems to be alot worse have checked u-joints drive shafts lug nuts tire pressure h9 3.55 gears according to door post problem has occured and progressed very rapidly no impact sustained ie accident 200,000km any suggestions or comments welcomed

1988 f-150 2wd auto rearend clunking + reverse low speed turn =tire shuddering
 

Have you checked the rear diff fluid level ? Any leaks from either the pinion or axle seals ? Any heavy towing , hot rodding etc ? I assume its the Ford 8.8 In rear diff ? Let us know .
Paul

1988 f-150 2wd auto rearend clunking + reverse low speed turn =tire shuddering