New answers tagged caprice
This sounds like one (or both) of your u-joints is (are) bad. If the u-joint has dried out and the needle bearings are dry, when they rotate as they are supposed to, they bind/release causing a pinging noise like you are describing (it reverberates through the hollow drive shaft). The reason you only hear it at lower speeds is because the road noise covers ...
You will need to inspect your driveshaft for security from front to rear, bolts, joints, brackets and for any damage. Are you sure the pinging is from your driveshaft? Pinging is normally associated with engine pinking, especially when accelerating from a low speed.
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