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Monterey Park, CA
About three weeks ago, I had our mechanic replace the seals in the engine to fix an oil leak, and rebuild the transmission. It sat for a week after it came home because we were out of town. Today, exactly 15 days later, the serpentine belt came OFF while driving, apparently because the tensioner came off. It was completely GONE when we opened the hood, but thankfully the belt was intact and not damaged at all. Is it more likely the bearing seized and caused the belt to torque the tensioner off, or that someone at the shop didn't tighten the tensioner properly after the repair? This is a 1996 Buick LeSabre Custom.
This happened to me just today. In our case, the tensioner had come completely off. My guess is there is an issue with your serpentine belt. Get it and the tensioner checked asap before something goes horribly wrong...like everything dying while you're doing 70 on the freeway.
Sorry; wrong thread.