My alternator went three days ago. I went to the library and copied the necessary pages out of the service manual for replacement and also sought additional knowledge in the search section. I have managed to remove the accessory belt and all the bolts for the alternator except for the one behind the idler pulley on the lower left. I've tried a 9/16 wrench to no avail. I've tried but can't fit a socket behind the idler pulley. I've tried to loosen the bolt for the idler pulley to remove but have not had success with that either. Should I try a metric wrench? I'm completely stuck and afraid to go any further for risk of stripping the bolt. Any suggestions would help. Thanx.