My wifes car (90 Honda accord) belts were squeking so I put some belt dressing on them. The dressing took the squeeks out till I started the car later then knock knock knock ..ect.... shut it off real quick thinking the belts broke.. they just came loose because the crankshaft pulley fell off...? The rubber like broke away from the pulley? Is this a major fix or do I need to just unbolt and put another back on...? Sideway engine won't be easy to get to it.