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11-11-2012, 01:32 AM
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#1 |
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Registered User
Join Date: Apr 2012
Location: greensboro,NC
Posts: 276
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brand new belt squealing
my 82 c10 250 4.1
has 3 belts just replaced with new belts and the alternator belt is sqealing when i press on the gass what can it be? Posted via Mobile Device |
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11-11-2012, 01:54 AM
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#2 |
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resident wrencher
Join Date: Dec 2006
Location: ramona california
Posts: 720
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Re: brand new belt squealing
Is the alt turning ? If not its seized. If that's not it is it flopping ? If so re tension it as tight as possible. If all else fails clean the belt groves in all pulleys. And then while its running thro some powdered borax soap on the belt. The grainuials will clean it out better. Or could be a cracked water pump pulley. My 350 had that high pitch chirp noise at high rpm
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11-11-2012, 01:56 AM
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#3 |
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Registered User
Join Date: Apr 2012
Location: greensboro,NC
Posts: 276
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Re: brand new belt squealing
the belts are tight as possible and yes its turning and i will try to clean it
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11-11-2012, 02:22 AM
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#4 |
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In the Forgotten far North.
 
Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: brand new belt squealing
Take the belts off and using a medium to fine grit sand paper, sand all the grooves of the pulleys then slightly scuff the sides of the belts to get a better "grip" on the pulley grooves. Replace,retighten belts and start it up. If squeeling persists, you've got bearings going out in the water pump or alternator or power steering pump. Maybe a.c compressor or A.I.R. pump if you have them.
__________________
1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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11-11-2012, 02:23 AM
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#5 |
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Registered User
Join Date: Apr 2012
Location: greensboro,NC
Posts: 276
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Re: brand new belt squealing
alright i will clean them tomorrow thanks for ur help
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11-11-2012, 02:46 AM
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#6 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: brand new belt squealing
Belt conditioner
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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11-11-2012, 02:47 AM
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#7 |
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Registered User
Join Date: Apr 2012
Location: greensboro,NC
Posts: 276
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Re: brand new belt squealing
what is that
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11-11-2012, 02:56 AM
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#8 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: brand new belt squealing
Exactly what it is. That being belt conditioner. While the engine is running you spray it on and under the belt and it makes the belt a little tacky. I use it on mine a few times every other month. Even with an underdrive my belts sqeel like hell if I Jump the throttle from idle at a light
Posted via Mobile Device It's also cool to use as a ghetto track bite for street racers but you didn't hear that from me https://www.google.com/search?q=crc+...&client=safari
__________________
377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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11-11-2012, 02:59 AM
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#9 |
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Registered User
Join Date: Apr 2012
Location: greensboro,NC
Posts: 276
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Re: brand new belt squealing
oh,,, already tried that and only stopped it for a few minutes then started again
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11-11-2012, 03:18 AM
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#10 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: brand new belt squealing
Ah then yes you Definitly have something dragging somewhere. Pull the belt and spin everything by hand and see if a pump or alternator are causing excessive drag. Everything should feel smooth
Posted via Mobile Device
__________________
377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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11-11-2012, 03:31 AM
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#11 |
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Registered User
Join Date: Jul 2009
Location: cleburne texas
Posts: 174
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Re: brand new belt squealing
what brand of belt ?..get a ribbed belt
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11-11-2012, 07:45 AM
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#12 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,514
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Re: brand new belt squealing
Pulley misalignment will cause belt squeal also. If you have already sprayed the belts and found it immediately stopped the squeal but it came back after a minute or two then it is definately not a bearing issue.
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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11-11-2012, 11:04 AM
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#13 |
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Registered User
Join Date: Apr 2012
Location: greensboro,NC
Posts: 276
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Re: brand new belt squealing
belt brand is duralast
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11-11-2012, 11:33 AM
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#14 |
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Registered User
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
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Re: brand new belt squealing
Mine did it when was cooler,went to a different belt and is gone,read somewhere the shape of the belt and different shape of the pullys would make noise
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11-11-2012, 03:21 PM
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#15 |
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Registered User
Join Date: Dec 2011
Location: Regina, SK, Canada
Posts: 622
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Re: brand new belt squealing
Belt probably just is not tight enough.
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1979 Chevy Dually Crew 4X4 454, D60 Tru-trac, D70 Detroit Locker, 3.73, 4L80E/NP205 1971 GMC 3/4 Ton 4X4 |
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11-11-2012, 04:51 PM
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#16 |
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Registered User
Join Date: Apr 2012
Location: Auburndale, FL
Posts: 716
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Re: brand new belt squealing
Mine does it every couple of months on my 6.2l. I just retention the alternator belt then it
Goes away for a long time. Best to have someone else tighten the belts while you pull the breaker bar on the alternator back with all your mite. Posted via Mobile Device
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Zaccaglin 1998 Chevrolet C1500 Ext. Cab 350 Former Rig: 1985 Chevrolet K20 Suburban 6.2L Detroit/TH400/NP208 |
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11-11-2012, 08:28 PM
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#17 |
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Registered User
Join Date: Apr 2012
Location: greensboro,NC
Posts: 276
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Re: brand new belt squealing
turned out to be the powersteering box, it had missing 2 bolts, i bough new bolts and installed them and now there is no noise, thanks guys!
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