Just bought my 1996 940.
Since i removed the last muffler, ive been hearing rattling from the back when accelerating from standstill or low speeds.

Checked if it was a loose heatshield but everything was securely attached.
Checked if it was the driveshaft bearing but that didnt make any noise.
Checked if it was the differential but that all seemed fine as far as i could see.

It doest make this sound when its lifted on a hoist.

Could this be a wheelbearing? Or anything else, i'd love to hear what you think. If any more information is needed please ask

Thanks in advance.

 

I've never heard a wheel bearing rattle - more likely they moan or hum. Have you looked at the emergency brake cables/shoes or the brake splash guard?