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Annoying Squealing noise 2500-infinite RPM's

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Old 04-29-2009, 04:33 PM
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Annoying Squealing noise 2500-infinite RPM's

Well I thought it was a ac compressor belt being loose but noooo. I replaced the pensioner pulley as the old one had a light click when you shook it. Well needless to say it is still whining like a $2 whooooa bicycle. I thought maybe vacuum hose but can't find a thing.

Aaron
Old 04-29-2009, 09:14 PM
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Did you replace the belts? The alternator bearings could also be bad.
Old 04-30-2009, 04:16 AM
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Belts had been replaced, dunno how to check the ALt. bearing short of just grab and wiggle it. Is it just the pulley bearings.... or the entire alternator? My dad keeps telling me it sounds like a whistle which would indicate a vacuum leak, I checked my vac. lines and noticed some were aged and other looked fine.

Aaron
Old 04-30-2009, 05:47 AM
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Does the whistle change with higher RPM?
Old 04-30-2009, 09:54 AM
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Why yes, yes it does. Starts lightly at about 2500 rpm's and then progressively gets louder.

Aaron
Old 04-30-2009, 12:48 PM
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I just checked mine last night. I took the alt. belt off and the noise stopped. So looks like I get to buy an alt.
Old 05-01-2009, 05:23 AM
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Originally Posted by bjslade0269
I just checked mine last night. I took the alt. belt off and the noise stopped. So looks like I get to buy an alt.
I don't know if mine will start w/o the alt in place, I Know some older ones will but not so sure. And if I have to replace it I'm going mean green.

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Old 05-01-2009, 05:51 AM
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Originally Posted by xcmountain80
I don't know if mine will start w/o the alt in place, I Know some older ones will but not so sure. And if I have to replace it I'm going mean green.

Aaron
Are you still selling it?
Old 05-01-2009, 06:50 AM
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Well, it sounds like its definitely a rotating part. I know you already knew that though.

If it were me, Id spray some silicone spray on the pulleys, to see if it helps at all...obviously try not got any on the belts themselves, or the contacting surface.

I hate little noises
Old 05-01-2009, 02:02 PM
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Originally Posted by Bighead
Are you still selling it?
Nope I decided to keep it because I love it sooo much! I think either a SC or Irbis rear are in the works one or the other.

Aaron
Old 05-02-2009, 05:31 AM
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Replaced my alt. with a $25 used one and my noise is gone! Now it's time to have my old one rebuilt. I hope you track down your noise soon.
Old 05-04-2009, 04:15 AM
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Originally Posted by bjslade0269
Replaced my alt. with a $25 used one and my noise is gone! Now it's time to have my old one rebuilt. I hope you track down your noise soon.
Which vehicle was this on?

Aaron
Old 05-04-2009, 04:54 AM
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the 99 tacoma 2.7
Old 05-04-2009, 05:44 AM
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Ok so it's at least somewhat applicable. Man I Hate to buy an ALT and have it not fix the problem. But I Had noticed my dual battery manger thats acting odd and a bad ALT might have something to do with it.

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Old 05-04-2009, 09:28 AM
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Lets see it's $128 for a ALT + a core, I called around to find out about seeing if I can get the old one rebuilt for a price and perhaps about 150 amps. Mean Green makes em but there $400. Youzer.


Aaron
Old 05-04-2009, 09:36 AM
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I was having the same noise problems and I've had a 150amp Alternator that I've been neglecting to install. Installed it a couple days ago and my noise problems went away.

I also did the big 3 wire upgrade while I was at it, upped everything to 4awg.

I paid somewhere around $200 for my 150amp alt but I don't remember where from. Just look around online.
Old 05-04-2009, 09:37 AM
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I hope my used one lasts a couple of months so I can get my old one rebuilt. I don't run anything more than stock electrical components on this truck so hopefully a rebuild will be cheap for my old one compared to buying a new one.
Old 05-04-2009, 10:00 AM
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Originally Posted by NicCantDecide
I was having the same noise problems and I've had a 150amp Alternator that I've been neglecting to install. Installed it a couple days ago and my noise problems went away.

I also did the big 3 wire upgrade while I was at it, upped everything to 4awg.

I paid somewhere around $200 for my 150amp alt but I don't remember where from. Just look around online.

Oh you tease! You can't remember where? WTF kidding kidding I'll search.

Aaron
Old 05-04-2009, 06:05 PM
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Well it isn't the alternator, as I swapped in a new one and same noise. I fear it may be a tranny bearing or perhaps a water pump. I forget what the WP sounds like when its going.

Aaron
Old 05-11-2009, 07:32 PM
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dude I had the same noise. louder when off of throttle and lounder as I sped up. Wheel bearing and right rear axel seal replacement fixed it all!


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