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Serpentine Belt noise #4673890
02/21/18 10:31 PM
02/21/18 10:31 PM
Joined: Aug 2009
Posts: 3,270
Ohio
Tdbo Online content OP
Tdbo  Online Content OP
Joined: Aug 2009
Posts: 3,270
Ohio
This concerns the Ranger in my signature.
Bought the truck used 5 years old and 56K miles.
Noticed shortly after I got it, that after a heavy rainstorm or after a snow, that there was a squealing sound that appeared to come from the serpentine belt.
Took it to the mechanic that I used at the time. Said it needed a new belt. He installed a new NAPA belt. No help.
Put up with it for awhile, and when I changed mechanics, had him take a look at it. He said that it was belt noise. While it was squealing, he gave the belt a hit of WD-40, and it quieted down. He recommended and installed a new Goodyear Gatorback. No help that time either.
I have put up with it for quite a while. Getting somewhat sick of the noise, as it is so bad at times, that when driving it down the road pedestrians turn around and look. After about 20 minutes running, the noise stops.
I have owned 4 Rangers, and this is the only one that has done this. Checked belt and it looks good. I hate to keep replacing belts when doing so does not solve the issue. Any ideas?


2012 Honda Accord LX-P 93K
2008 Ford Mustang Pony Package Convertible 17K
2006 Honda Odyssey EX-L 76K
2003 Ford Ranger 3.0 Supercab 110K
Re: Serpentine Belt noise [Re: Tdbo] #4673912
02/21/18 11:06 PM
02/21/18 11:06 PM
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
It sounds like a weak tensioner to me, replace the tensioner, idler and belt all at the same time.
The squealing belt is probably glazed now so its prudent to change it.

Edit: Give every remaining pulley a scuff with and a red scotch bright pad and a quick spray with brake cleaner before installing the new belt.

Last edited by Trav; 02/21/18 11:09 PM.

ASE L1, Master. Deutsch Meisterbrief.
Re: Serpentine Belt noise [Re: Tdbo] #4673917
02/21/18 11:15 PM
02/21/18 11:15 PM
Joined: Jun 2005
Posts: 11,330
Santa Barbara, CA
bdcardinal Offline
bdcardinal  Offline
Joined: Jun 2005
Posts: 11,330
Santa Barbara, CA
Could it possible be the cam synchronizer? Try taking the belt off and seeing if the noise is still there. I sell a TON of synchronizers on the 3.0L Vulcans.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Serpentine Belt noise [Re: bdcardinal] #4673919
02/21/18 11:19 PM
02/21/18 11:19 PM
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
shrug I just went by this, its a pretty good indicator, but who knows.

Quote:
he gave the belt a hit of WD-40, and it quieted down


ASE L1, Master. Deutsch Meisterbrief.
Re: Serpentine Belt noise [Re: Tdbo] #4673925
02/21/18 11:26 PM
02/21/18 11:26 PM
Joined: Jun 2005
Posts: 11,330
Santa Barbara, CA
bdcardinal Offline
bdcardinal  Offline
Joined: Jun 2005
Posts: 11,330
Santa Barbara, CA
I missed that. Taking the belt off and running the engine for a bit won't hurt anything. You have to do it anyway to do any real diag anyway.

It is kinda fun when a shop not used to Fords orders a belt for a Vulcan and then a few hours later calls and asks for a synchronizer and are surprised we have it in stock. It isn't my job to suggest parts, but I can run sales history.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Serpentine Belt noise [Re: bdcardinal] #4673948
02/21/18 11:51 PM
02/21/18 11:51 PM
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
Nothing wrong with running it without the belt to test it. I just read up on this and you are 100% spot on, it seems to be a real issue. It sure helps to have a pro parts guy on the forum.


ASE L1, Master. Deutsch Meisterbrief.
Re: Serpentine Belt noise [Re: Tdbo] #4673949
02/21/18 11:52 PM
02/21/18 11:52 PM
Joined: Dec 2016
Posts: 6,241
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,241
Waco, TX
Make sure all idler and accessory bearings are in good shape.

WD-40 just masked the problem temporarily.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Serpentine Belt noise [Re: Trav] #4673952
02/21/18 11:58 PM
02/21/18 11:58 PM
Joined: Jun 2005
Posts: 11,330
Santa Barbara, CA
bdcardinal Offline
bdcardinal  Offline
Joined: Jun 2005
Posts: 11,330
Santa Barbara, CA
Originally Posted By: Trav
Nothing wrong with running it without the belt to test it. I just read up on this and you are 100% spot on, it seems to be a real issue. It sure helps to have a pro parts guy on the forum.


Dorman makes a replacement but its Dorman.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Serpentine Belt noise [Re: bdcardinal] #4674007
02/22/18 03:16 AM
02/22/18 03:16 AM
Joined: Aug 2004
Posts: 19,989
CA
The Critic Offline
The Critic  Offline
Joined: Aug 2004
Posts: 19,989
CA
Originally Posted By: bdcardinal
Originally Posted By: Trav
Nothing wrong with running it without the belt to test it. I just read up on this and you are 100% spot on, it seems to be a real issue. It sure helps to have a pro parts guy on the forum.


Dorman makes a replacement but its Dorman.

Just say no to Dorman...


2011 Toyota Prius - 173k - Various 0W-20 (Brew)
2007 Honda Accord 2.4 - 131K - Mobil 1 EP HM 5W-30
Re: Serpentine Belt noise [Re: Tdbo] #4674038
02/22/18 06:24 AM
02/22/18 06:24 AM
Joined: Oct 2005
Posts: 4,404
Atlanta
DuckRyder Offline
DuckRyder  Offline
Joined: Oct 2005
Posts: 4,404
Atlanta
Synchronizer sounds just like a belt, but comes from the back of the engine.


Robert
  • 2007 Toyota Prius Touring
  • 2005 Honda Civic Sedan
  • 1972 Ford F100
Re: Serpentine Belt noise [Re: Tdbo] #4674040
02/22/18 06:33 AM
02/22/18 06:33 AM
Joined: Mar 2013
Posts: 775
NY
joegreen Offline
joegreen  Offline
Joined: Mar 2013
Posts: 775
NY
I'm currently battling the same problem as op. If the sound stops when spraying the belt it's probably not the syncronizer. Make sure the tensioner is not broken as they have been known to break and cause the pulley to be off kilter and cause a belt squeak.


1978 Chevrolet k20
Engine: Delo 10w30xle
Transmission: Castrol transmax dex/merc

1984 Mercedes-Benz 300 turbo diesel
Engine: Delo 400 15w40le
Re: Serpentine Belt noise [Re: bdcardinal] #4674090
02/22/18 08:30 AM
02/22/18 08:30 AM
Joined: Aug 2009
Posts: 3,270
Ohio
Tdbo Online content OP
Tdbo  Online Content OP
Joined: Aug 2009
Posts: 3,270
Ohio
Originally Posted By: bdcardinal
Could it possible be the cam synchronizer? Try taking the belt off and seeing if the noise is still there. I sell a TON of synchronizers on the 3.0L Vulcans.


Pretty sure that is is not the cam synchronizer. I had it replaced since owning the truck with a Motorcraft cs. Same behavior before and after replacement.


2012 Honda Accord LX-P 93K
2008 Ford Mustang Pony Package Convertible 17K
2006 Honda Odyssey EX-L 76K
2003 Ford Ranger 3.0 Supercab 110K
Re: Serpentine Belt noise [Re: Trav] #4674098
02/22/18 08:45 AM
02/22/18 08:45 AM
Joined: Aug 2009
Posts: 3,270
Ohio
Tdbo Online content OP
Tdbo  Online Content OP
Joined: Aug 2009
Posts: 3,270
Ohio
Originally Posted By: Trav
It sounds like a weak tensioner to me, replace the tensioner, idler and belt all at the same time.
The squealing belt is probably glazed now so its prudent to change it.

Edit: Give every remaining pulley a scuff with and a red scotch bright pad and a quick spray with brake cleaner before installing the new belt.



Thanks, Trav.
I'll probably have my mechanic do the work because it is cold here, and no garage.
I know the guy pretty well and he generally listens. Will give him the procedure and insure that he follow it.


2012 Honda Accord LX-P 93K
2008 Ford Mustang Pony Package Convertible 17K
2006 Honda Odyssey EX-L 76K
2003 Ford Ranger 3.0 Supercab 110K
Re: Serpentine Belt noise [Re: The Critic] #4674101
02/22/18 08:47 AM
02/22/18 08:47 AM
Joined: Aug 2009
Posts: 3,270
Ohio
Tdbo Online content OP
Tdbo  Online Content OP
Joined: Aug 2009
Posts: 3,270
Ohio
Originally Posted By: The Critic
Originally Posted By: bdcardinal
Originally Posted By: Trav
Nothing wrong with running it without the belt to test it. I just read up on this and you are 100% spot on, it seems to be a real issue. It sure helps to have a pro parts guy on the forum.


Dorman makes a replacement but its Dorman.

Just say no to Dorman...


For a cam synchronizer, never anything but OEM. Motorcraft.


2012 Honda Accord LX-P 93K
2008 Ford Mustang Pony Package Convertible 17K
2006 Honda Odyssey EX-L 76K
2003 Ford Ranger 3.0 Supercab 110K
Re: Serpentine Belt noise [Re: Linctex] #4674109
02/22/18 08:58 AM
02/22/18 08:58 AM
Joined: Aug 2009
Posts: 3,270
Ohio
Tdbo Online content OP
Tdbo  Online Content OP
Joined: Aug 2009
Posts: 3,270
Ohio
Originally Posted By: Linctex
Make sure all idler and accessory bearings are in good shape.

WD-40 just masked the problem temporarily.



That is all that or belt dressing will do.
Based on history, I know that a new belt is not the cure by itself.
Replacing the belt 2x by itself has done nothing.
Like medical care, sometimes one has to be assertive.


2012 Honda Accord LX-P 93K
2008 Ford Mustang Pony Package Convertible 17K
2006 Honda Odyssey EX-L 76K
2003 Ford Ranger 3.0 Supercab 110K
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