Hey everybody. I've done the search more than a few times trying to get to the bottom of this problem with my friend's 97 420A.
To preface, The crank pulley is not warped or cracked. I have been alternating between two good pulleys that I have to ensure that this is not the issue.
The crank pulley is torqued to 105 lb-ft. I've come across this spec more than once, so I doubt this is the issue.
The alternator belt always stays on track.
The car recently received the updated(?) thicker tensioner pulley. The bearing in said pulley seems fine.
Both belts are tight as hell. And the p/s pump is clocked to the position which would make it tighest.
On startup, the belt will jump off of the A/C compressor 1 rib. It will run there just fine for a few days if he's lucky. Then the belt shreds.
Normally, I would just eliminate A/C or P/S since he would be up for it. Unfortunately, he needs P/S since he got shot in the arm last year and I doubt that he could turn the wheel as needed if the belt were to break.
