Squeaky sound on startup
if you are having a squeak right after start up but its intermittent sometimes i was told it is the starter bearing i had that issue, for the squeak while driving if you have a squeak that sounds like its right behind you i have had that as well that one was the water pump it was squeaking only in the higher range of the rpm one way to find out if it is the water pump is i took off the serpentine belt and tried turning the water pump by hand i found that the bearing for the pulley shaft was completely destroyed and it actually was off canter with the rest of the pump also when you try to turn it you will feel it bind as the pulley contacts with the pump from the bearing failure be advised if changing the water pump to either entirely flush the system or use the porsche approved fluid which is pricey im not sure if your still having this issue but if so i hope this helps you make a decision on which direction to go
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