i just replaced the serpintine belt on my 2003 Bonnie, at 75,000miles.
and now at 88,000 miles, the Idler Pully BEARING failed,
1. ruined my brand new belt. shreaded it.
2. the bearing failed, so i replaced the Idler pully.
3. i started the car up, w/ new belt and pully
4. Power Steering leaks now.
THE BELT WORE A HOLE INTO THE PLASTIC POWERSTEERING RESEVOIR!!!!!!!
the power steering is a PITA to get out, cause you have such a hard time getting to the Hoses that connect to the pump!
replace the Idler Pully every 50,000 miles.
my car has 4 idler pulleys,
1 for the regular drive belt for engine accesories ( this is the one that failed)
3 for the SC (super charger)
REPLACE THEM ALL if you have a SSEi.