A car engine has between 1 and 3 belts on average. Each is used to turn one or more accessories like alternators and water pumps.
not likely
there are 3 belts total.
as many as there are seat belts
As many seat belts the vehicle has.
Ask the question again citing the make and model. There are so many different tensioning arrangements and usages of engine belts it is always better to get the specific engine/vehicle manual and follow it.
3
one
There are many shops in and around Los Angeles that offer engine belt replacement. Try either your local dealership, Barsom Automotive or Fix Car Now.
nil
I would need to know which engine your car has to answer your question.
No. Seat belts are not connected to the engine or power train.
As many passengers as there are seat belts.