Idler pulley broke off

Answer 1

you can makea plate to bolt to the head and in between the alternator mount bolt. make it out of 1/4" inch steel plate. make your template out of a piece of tracing paper and then lay it out on the steel plate the way you need it. Take off enough in between alternator ear for plate to fit against engine flush. you can move mount over to space beside the old boss where the pulley originally bolted on. it will work, but requires lots of exactness to make correctly. i did it. have pics of everything. you need to have a good welder to weld a nut on the back side of plate. you must allow for the distance of pulley sticking out by drilling a hole in plate that is same size as pulley shoulder so it will drop down even like old setup. weld a plated nut on back side so the pulley will tighten down exactly and it will be same distance as old pulley was. take your time. my Cadillac went to the dealership where some idiot drilled the side of the broken stud with a angle drill and drilled the side of he bolt off where the stud originally broke and then broke off an easy out in the block. their fix was a new block or shorter belt which squeeled like a hurt pig everytime the car was started. this was cadillacs final fix which costed me 500.00 . unless i wanted the block replaced. don't ask the price. all in all you are better off to do it your self unless you can't , but then find a good mechanic, as cadillacs mechanics were not impressive to me...