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Thread Topic: Squeaky sound when first starting up. alternator perhaps Threaded

   
Date: 10-15-05 02:19
From: Grover
Subject: Squeaky sound when first starting up. alternator perhaps

When I first start the car in the morning, I here a squeaking sound that seems to be coming from the alternator, possibly at the belt or pulley. Is there a place in there that I can lube easily or could it be a slipping belt? Once the car has warmed up a few minutes it goes away.



Date: 10-15-05 02:40
From: tkent02 in Littleton, CO View user's profile Send e-mail
Subject: Belts a bit loose or the wrong type...

BMWs use a funny angle in the V of the pulley, a belt from a different car will slip as not much of the belt actually makes contact with the sides of the V.
_________________
Tom
Something always leaks.



Date: 10-15-05 02:50
From: SteveH in Central New Jersey View user's profile
Subject: Re: Squeaky sound when first starting up. alternator perhaps

Your belt is worn, and/or loose. It may need to be tightened, but if you make it too tight, you will damage the water pump.

Does the sound happen when you blip the throttle?
_________________
76 2002 40 DCOEx2 292 Shrick
1984 Mercedes-Benz 300D Turbo Diesel 240,000 miles




Date: 10-15-05 06:02
From: Guest
Subject: How to find right tension?

The belt is really quite new, only about 10k miles so I doubt it is worn. Adjustment sounds more likely. Can anyone describe how it's done and what how to measure the correct tension?



Date: 10-15-05 06:18
From: BillWilliams in Maryland View user's profile Send e-mail
Subject: Bad bushing, especially the lower ones, will cause that

start up squeel. The initial torque causes the alternator to shift, due to bad bushings, and scream at you to change them.
_________________
1972 2000tii Touring
1972 2002tii with A4 system
1972 2002tii found a motor
16' Mad River



Date: 10-15-05 07:03
From: c.d.iesel in South West Connecticut - Darien = The Right Coast View user's profile Send e-mail
Subject: wrong size belt and or alt. pulley not inline with.....

water pump pulley.
Rotten alternator bushings and alternator sitting
cock-eyed,

or,

Wrong size belt - your "V" is wrong = use 9.5 (is the"V" width size)
x 875 (is the length in mm) belt only
_________________
1976 BMW 2002 #2743711(sorry I sold it 12/25/06)
1986 BMW R65 650cc twin 19k miles
1964 BMW R27 250cc single 15K miles
2002 BMW 325xiTouring 29k miles
1984 MERCEDES-BENZ W123 300D Turbodiesel-188k miles fein-DIESEL


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Date: 10-15-05 10:31
From: cj in the BMW Sauber F1 car View user's profile Send e-mail
Subject: Re: Squeaky sound when first starting up. alternator perhaps

I second checking the alt. bushing and belt.
_________________
The rides!

http://www.cardomain.com/memberpage/792851
http://www.cardomain.com/memberpage/792793



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