what is the purpose of the intermediate shaft in the 94 olds 3.8 engine?

Question

on timing my car for a new belt I discovered that the intermediate shaft does not line up with the marks on the camshaft and the crankshaft yet the cars runs well. what is the purpose of the shaft?

Answer 1

I don´t know that particular engine, but it is common to have shafts with the only purpose of balancing to reduce vibration.

Answer 2

J.C. is correct the main purpose is to help balance the engine and control vibration.