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The water pump pulley on your car may melt if the water pump belt tensioner seizes, causing the pulley to overheat and deform. This may also result in the engine overheating and possibly damaging the head gasket. To fix this problem, you will need to replace the water pump drive pulley, the water pump belt, and the tensioner pulley. You may also need a special tool to remove and install the new pulley.
My book shows 3.0 ltr 1997-01 "V" engine with a timing belt recommended change at 100.000 miles or 60.000 miles under adverse conditions. It shows 3 idler pulleys that should be changed as well and all the cam and crank seals should be replaced as well because oil is the main killer of timing belts.. While you may consider the extra cost to be a burden you will not think so when you get 100.000miles trouble free in the timing belt area . Do not replace any of the items and you run the risk of all that work again in say 30.000 miles
There is only one Camshaft Position Sensor. It is located on the right side of the engine. (your left as you are facing the front (drive-belt end) of the engine)
The water pump is on the front driver's side of the engine. It is spun by a small belt driven from the end of the cam shaft. You will see a cover up and to the right of the oil dipstick. That covers the pulley. Follow the belt and you will find the water pump. It requires a special tool to replace.
Is the belt not fitting properly because of it is too long or too short or is something getting in the way? It must be routed in the proper order. I believe that most cadillacs require the belt to be routed leaving the alternator pulley for last. A long 3/8" drive breaker bar should fit in the center of the tensioner. When you have everything lined up, pry the breaker bar slowly while keeping tension on the belt by pulling the belt onto the alternator pulley. Once it seats, slowly add tension back to the belt stopping every few inches to check the alignment. I hope that is helpful but I have not worked on a caddy in a few years.
if there is a dimple in the middle of the shaft, then you will probably need a pulley remover. make sure you havent missed any bolts that you have to go through little holes on the pulley to get to also. and also turn the pulley and look for any bolts that hold it on that are on the sides of the pulley, like a allen key bolt but on the side of the pulley that holds it on that way. i hope this helps
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