NS, the squealing noise on start up is usually belt/tensioner friction due to the pulley(s) not spinning at the same speed as the belt due to the "bearing" being worn or ready to go. Recommendation is a simple quickie test. Remove belt when cold, check free play in tensioners/idle pulley, check belt for edge wear and cracking. Fire up engine for 1 min. Noise gone? Or try this other quick test: GATES: Diagnosing Belt Noise - The Spray Bottle Test- see youtube video.
https://youtu.be/fPjmBQc2gGQ
If your mileage is over 60K replace belts, if over 100 replace lots more.
If we knew the engine size it would help....
It is considered normal maintenance to replace water pump, belts and tensioners at 80-100K on 3.0 engines. After all they are over 12 year old by now. In place of records replace it all and you will be happier in the long run.
Tensioners have little to no play new. The little brass/aluminum bushing wear out and allow side play. The noise is the metal on metal tear/wear. There are no "lube" points just check and replace as required.
www.ecstuning.com for images
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2005 X5 4.8IS
The
Blue ones are always FASTER....
Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green