I have an 87 ford ranger. The shoulder seat belts don't activate if I give them a quick tug. All of the Ford seat belts I tried at the wreaking yard acted just like mine. If you pull on them sharply the belt does not stop.
My question is this; do ford seat belts activate in some other way than a quick pull on the belt? Do they have an inertial slider in the mechanism or some other means of activation? Or,are my belts broken and all those I tried in the wreaking yard?
If broken is there an easy way of fixing them?