Belt is thrown and pully is loose

1993 CADILLAC ALLANTE
8,400 MILES • V8 • FWD • AUTOMATIC
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DANON TROY H
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  • 1 POST
1993 Cadillac Sedan Deville has thrown the belt and there is a loose pully which I think is the timing chain pulley or the waterpump pulley. How do I determine what the problem is?
Feb 17, 2011 at 2:32 PM
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FACTORYJACK
  • ✓Experienced Mechanic
  • 4,159 POSTS
If it is the largest, smooth pulley, it is the water pump. Depending on the level of damage, you may just get by with tightening the bolts. If it has been going on for a while, the holes in the pulley get elongated. In that case, as long as the bolts are still in the holes, you may need a pulley. If there is further wear, say the bolt holes are damaged, you would need a water pump.
Feb 17, 2011 at 7:46 PM
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ANDREWS AUTOMOTION
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  • 5 POSTS
is their any noise coming from belt area? check to see if all pulleys are in line check altenator pulley sometimes too many spacers or not enough behind pulley can throw it off line
Feb 18, 2011 at 7:16 AM
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CADIEMAN
  • ✓Experienced Mechanic
  • 3,544 POSTS
u have to replace the water pump and pulley and belt if damaged. i was factory factory trained on this model
good luck
Feb 20, 2011 at 5:10 PM
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