05-24-2010, 04:33 PM
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#1
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GX Member
Join Date: May 2009
Location: St Louis
Posts: 50
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Chirping Sound
I get a chirping sound on cold start ups. Sounds like it's coming from the alternator. Any ideas?
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2k, GL, 3.4
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05-25-2010, 02:33 AM
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#2
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GLS member
Join Date: Jul 2006
Location: wisconsin
Posts: 2,733
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It's not belt slip as the engine stumbles a bit, is it?? My Buick does that if I don't quite crank long enough and it stumbles before it catches itself.
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05-25-2010, 02:41 AM
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#3
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Premier V.I.P. Member
Join Date: Feb 2009
Location: Oxbow SK
Posts: 1,385
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or alternator bearings perhaps. wouldn't worry about it until your alternator stops turning, or it gets worse
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2002 Alero w/ 2.2 ecotec 5 speed
power window conversion, heated leather seats, 16" rims, high & low hids, auto dimming rear mirror, speedbuilt front and rear sway bars, poly bushings all around.
2005 Silverado 2500HD w/ 6.0l Vortec 4L80E
Tuned 6.0l, exhaust, intake, with 450000km on the odometer. Tow Rig
1985 Pontiac Trans Am GTA w/ 5.7 Vortec 700r4
mild vortec 350 with 4 speed auto. performance suspension. factory gold color. project car
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05-25-2010, 08:08 AM
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#4
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I drive a JEEP!
Join Date: Nov 2005
Location: Salisbury, Maryland
Posts: 6,388
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Is it Tensioner pulley, Tensioner pulley needs adjustment, belt slip, belt needs replacement, or AC compressor pulley? Dumb question...How long has it been doing it, and is the belt wet? Ok two dumb questions!
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05-25-2010, 09:10 AM
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#5
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GLS member
Join Date: Mar 2008
Location: Baltimore, MD USA
Posts: 5,530
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I have the same thing happening on my 1995 Escort, but the alternator only has about 30,000 miles on it, the serpentine belt is maybe only two years old, but the belt tensioner is original, and has over 193,000 miles on it. Still have no idea what's causing it.
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05-25-2010, 09:34 AM
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#6
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GX Member
Join Date: May 2009
Location: St Louis
Posts: 50
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Car runs fine, belt is in good shape and no electrical problems. Seems to do it more so when it's damp or raining. Eventually goes away as motor warms up. I'm thinking it's the tensioner. It's probably more annoying than anything. Thanks for the replys
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2k, GL, 3.4
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05-25-2010, 01:20 PM
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#7
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GLS member
Join Date: Mar 2008
Location: Baltimore, MD USA
Posts: 5,530
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If you find out for sure post the info back here.
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05-25-2010, 01:41 PM
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#8
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GL Member
Join Date: Jan 2009
Location: Fowlerville MI
Posts: 874
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i was getting a chirping also on cold/damp mornings. the mechanic took a wire brosh to the back (contact) side of the belt with the car running and its been almost a year and no chirping.
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[ion] C2 - I ran her hard, on nothing but the bare ground. After easing into it and progressively pushing down harder I could feel the pressure building and once it peaked I let off and she gave a loud cry from the blow off valve.
Ttop191 - ^ because your car is the only thing that will suck and blow that you can actually successfully get within 25 feet of
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05-25-2010, 06:21 PM
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#9
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GX Member
Join Date: Apr 2009
Location: Edinburg,Tx
Posts: 62
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Quote:
Originally Posted by alero_bmxer
i was getting a chirping also on cold/damp mornings. the mechanic took a wire brosh to the back (contact) side of the belt with the car running and its been almost a year and no chirping.
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yup your belt and pulleys get glazed. Best bet would be to get steel wool and rub down all the pulleys and get a new belt.
If still you have chirp there might be a pulley alignment problem, I know the bracket that holds the belt tensioner assy. there is a spacer in back of it, if its missing it will make the belt squeal like a mother.
This happened to me once the mechanic who changed my engine lost it, so I put a bunch of washers instead works great!
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1999 Alero 3400
Just hit 210,000 miles bisches 
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07-17-2010, 12:01 PM
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#10
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GX Member
Join Date: May 2009
Location: St Louis
Posts: 50
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Well, the power steering pump eventually went out. Grinding sound something fierce and with the chirping was making one heck of a racket. Replaced power steering pump..all is well.
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2k, GL, 3.4
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07-17-2010, 04:43 PM
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#11
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GLS member
Join Date: Dec 2003
Location: Midland, MI
Posts: 1,458
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mine does the same thing when I first start it up the goes away just replace belt and tensior shouldnt cost more than $50 all together
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