What causes this sound wo wo wo? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*67Fleetsidedream* · 05-12-2002, 09:25 AM

The wo wo wo wo wo while going down the road?

thanks
Ben

------------------
67 Fleetside Custom C-10
SBC 350 .030 9:1 comp.
Comp Cams Extreme Energy XE256H-10
Carter AFB 600
Edlebrock performer intake
Screw in rocker studs
Oversize valves
Scat 350 crank
Everything balanced within one gram.
Marine grade plywood bed(looks awsome)

Andy4639 · 05-12-2002, 09:28 AM

A TRAIN near by. Had too!
Sorry couldn't pass that up.
It's not enough to go on what else is it doing?

------------------
Andy
71's Are for ever!!! or 67,68,69,70,72
71,factory tach,tilt for straight drive,gauges,ac,speed warning,clock,305 HO TPI with 700-R4, lowered 2" & 3" ,and 17" Chrome Stealth wheels, Pioneer reciever,100 watt amp, 6 disc changer, 2-10" subs (behind seat) 2-6x9 in doors, 2-3ways mounted under seat, and 2 tweaters on door panels

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Gordo · 05-12-2002, 09:42 AM

Yeah,,,need more info. A couple things come to mind anyway, scalloped/knobby tires or wheel bearings going bad, front or rear.

------------------
1971 C10 swb stepside 350/700R4/3.73posi
Killingworth, Connecticut

**68 Stepside** · 05-12-2002, 09:50 AM

Carrier Bearing?

*67Fleetsidedream* · 05-12-2002, 10:09 AM

It does it at around 1500-2500k rpm range in 3rd gear when moving down road.
Ben

tom hand · 05-12-2002, 10:40 AM

I would look at the tires first. They seem to be the most common thing to cause that problem. If you know someone that has a truck that has wheels that fit your truck maybe you can talk them into switching[one at a time] to help find the problem. BUT [and this is a big one] it could be most anything that rotates so you could be looking for a while. Transmission,[espesally if it is a manual]driveshaft,u-joints,carrier bearing,rearend, or wheel bearings could also be suspect. It is impossable for anyone to tell you without hearing it.

------------------
72 GMC Sierra SWB almost finished---- 84 Softail
Olive Branch MS

**68Custom** · 05-12-2002, 12:29 PM

I agree with 68 Stepside, CHECK THAT CARRIER BEARING!!! I had mine replaced and the new one gave out not even 1 week with it on, but before it did i was hearing an odd (at the time) sound from under my truck. I let it go (big mistake) and ended up having it towed back to shop because the new one broke completely, not fun! Good Luck

68Custom

1968 C10 Custom Long Wood Bed
New Crate 350/TH400, PS, PB
*50th Anniversary Pickup*

*Fast68Chevy* · 05-12-2002, 12:42 PM

if it does it at same rpm no matter what gear you are in then its not tires, if it only does it at certain speed the its tires or could be driveline, have to sit down and think about what things would make sounds at certain rpm or speed and such. if you think its tires then swap a couple spares on the front or rear and then go drive again at same speed when it was doing it and see if it is, if it still is then chekc out the bearing, see how much slop is in it and also in the rear U joint at the rear axle, shake the driveshaft all around, or try to and look for slop, especially if truck makes a clunk! when you put it in gear(if its auto trans)

i had a maybe similar kind of sound come from under the 79 G20 van when was cruising at around 75 or 80, like a hummmmmm......hummmmmm.....hummmmmm noise, thats when i knew i was really booking it down the freeway as the speedo was not connected up, it was either the little passenger tires not liking the rpm they were turnign or the driveline slip yoke with wear int he splines,. never did care to find out, it cruised liek a caddy so oh well. it was a neat sound actually, only someone like me would take a 79 G20 beater trashed van with door rotting off and loosing pieces of door skin and body side molding and other body panels onto freeway literally that fast and think nothing of it

hell yeah zoom zoom

good luck !
------------------
Randy- Lincoln, IL
randy@ccaonline.com 2177353230
*many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham

current fleet: -71 C-10 350/CH465/3.07- basketcase, #1
-90 Cavalier 2.2L sky blue, a driver
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-82 purple Trans Am, project #3
*Paint is overrated*
© RSS Enterprises 2000

[This message has been edited by Fast68Chevy (edited May 12, 2002).]

imaindianoutlaw · 05-12-2002, 01:37 PM

tires are cupped

------------------
Charles W. Hein
S. Williamsport PA

imaindianoutlaw@yahoo.com

REFRIGERATION TECH

1971 Rolling chassis

FOR SALE
1963 Pontiac Tempest
1965 Pontiac GTO
1956 Pontiac 2 dr

*67Fleetsidedream* · 05-12-2002, 03:05 PM

I will check the carrier bearing. I don't think it is the tires. I bought 4 new ones 4k miles ago. Could the drift shaft be out of balance? I just does it at a certain RPM range.
Ben

PanelDeland · 05-12-2002, 03:21 PM

Wasn't this question answered in the "How to shower like a woman/How to shower like a man" post?Woo Woo sound???

------------------
Deland does Chevys 68Chevy panel(LIZ)
"A man and his truck,it's a beautiful thing"
"I have the body of a god,unfortunately it's Budda"

Longhorn Man · 05-12-2002, 03:24 PM

I have had worn rear bearings do this too.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
E-mail longhornmail@yahoo.com
My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough?
Columbus Ohio

67lwbfleet · 05-13-2002, 04:50 AM

Could it be the pinion gear in the rear?or low diff. fluid.

[This message has been edited by 67lwbfleet (edited May 13, 2002).]

Mudder · 05-13-2002, 05:38 AM

my swampers sound like that at about 75 mph, and yes the old ones were cupped.

------------------
67 stepside 4x4 Owensville MO mudder67@hotmail.com

kurts72 · 05-13-2002, 06:24 AM

Tires is my vote.

imaindianoutlaw · 05-13-2002, 07:23 AM

if its 4x4 its tires my bet

------------------
Charles W. Hein
S. Williamsport PA

imaindianoutlaw@yahoo.com

REFRIGERATION TECH

1971 Rolling chassis

FOR SALE
1963 Pontiac Tempest
1965 Pontiac GTO
1956 Pontiac 2 dr

Joachim · 05-13-2002, 09:03 AM

Have a similar sound in mine, believe it to be the speed-O cable. Tried lithium grease. Some relief but not totally gone away.
Joe

68 Suburban · 05-13-2002, 09:05 AM

Arsinial Hall?

------------------
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O'l Buck · 05-13-2002, 11:24 AM

is it comming from outside the cab, or inside, mine makes that sound too, but it is definitely the spedo cable, and it only does it in cold weather. I did have a big truck that made that sound one time, accompanied by a vibration, this was about 50 miles before the ring gear in the rear drive axle snapped in 3 pieces, i hope that is not your problem.

------------------
"In the words of Motley Crue, This will always be my home sweet home"

Ol' Buck: '72 Chevy 1/2T 4x4 shortbox stepside 350/350auto on '84
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**COBALT** · 05-13-2002, 04:42 PM

What happens when you speed up and/or slow down in this RPM range?

What about going around corners (1500-2000 RPM isn't all that much)?

If you're sitting still, and your tranny is in N and you rev the engine do you hear the sound?

Find a long hill, and start at the top. Put your truck in N and coast down. When you reach that familiar RPM range do you hear the noise?

With that same hill start at the bottom, and drive up until you reach that RPM range (I assume you'll hear the sound). Does the noise sound worse than usual? Does it sound worse then when you coasted down hill?

Is the sound coming out of a particular side of the truck?-front, rear, driver's side, passenger's side? Have someone ride in the back on a flat straight road with no other cars and listen...

With what you're telling us it could be anything engine, trany, driveline, or differential related! Narrow it down.

05-12-2002, 09:50 AM	#4
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	Carrier Bearing? __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

05-12-2002, 10:40 AM	#6
tom hand CCRider Join Date: Feb 2000 Location: Olive Branch,MS,USA Posts: 2,232	I would look at the tires first. They seem to be the most common thing to cause that problem. If you know someone that has a truck that has wheels that fit your truck maybe you can talk them into switching[one at a time] to help find the problem. BUT [and this is a big one] it could be most anything that rotates so you could be looking for a while. Transmission,[espesally if it is a manual]driveshaft,u-joints,carrier bearing,rearend, or wheel bearings could also be suspect. It is impossable for anyone to tell you without hearing it. ------------------ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS __________________ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS

05-12-2002, 12:29 PM	#7
68Custom Hammer On! Join Date: Jul 2001 Location: Olathe, KS Posts: 473	I agree with 68 Stepside, CHECK THAT CARRIER BEARING!!! I had mine replaced and the new one gave out not even 1 week with it on, but before it did i was hearing an odd (at the time) sound from under my truck. I let it go (big mistake) and ended up having it towed back to shop because the new one broke completely, not fun! Good Luck 68Custom 1968 C10 Custom Long Wood Bed New Crate 350/TH400, PS, PB 50th Anniversary Pickup __________________ 1968 C20 Inline 6 250 SM465 4 speed 1968 K10 Inline 6 250 SM465 4 speed

05-12-2002, 01:37 PM	#9
imaindianoutlaw GMC SHORT FLEET F/S Join Date: Jun 2000 Location: SOUTH WILLIAMSPORT PENNSYLVANNIA Posts: 2,117	tires are cupped ------------------ Charles W. Hein S. Williamsport PA imaindianoutlaw@yahoo.com REFRIGERATION TECH 1971 Rolling chassis FOR SALE 1963 Pontiac Tempest 1965 Pontiac GTO 1956 Pontiac 2 dr __________________ CHARLES WADE HEIN HVACR FOREMAN. LEWISBURG U.S.P.

05-12-2002, 03:21 PM	#11
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Wasn't this question answered in the "How to shower like a woman/How to shower like a man" post?Woo Woo sound??? ------------------ Deland does Chevys 68Chevy panel(LIZ) "A man and his truck,it's a beautiful thing" "I have the body of a god,unfortunately it's Budda" __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

05-12-2002, 09:25 AM	#1
67Fleetsidedream Wiseass secured himself a BAN Join Date: Nov 2000 Location: MOON!!! Posts: 2,282	What causes this sound wo wo wo? The wo wo wo wo wo while going down the road? thanks Ben ------------------ 67 Fleetside Custom C-10 SBC 350 .030 9:1 comp. Comp Cams Extreme Energy XE256H-10 Carter AFB 600 Edlebrock performer intake Screw in rocker studs Oversize valves Scat 350 crank Everything balanced within one gram. Marine grade plywood bed(looks awsome)

05-12-2002, 09:28 AM	#2
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	A TRAIN near by. Had too! Sorry couldn't pass that up. It's not enough to go on what else is it doing? ------------------ Andy 71's Are for ever!!! or 67,68,69,70,72 71,factory tach,tilt for straight drive,gauges,ac,speed warning,clock,305 HO TPI with 700-R4, lowered 2" & 3" ,and 17" Chrome Stealth wheels, Pioneer reciever,100 watt amp, 6 disc changer, 2-10" subs (behind seat) 2-6x9 in doors, 2-3ways mounted under seat, and 2 tweaters on door panels www.geocities.com/chevy71tpi/main.html www.picturetrail.com/Andy4639 __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

05-12-2002, 09:42 AM	#3
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	Yeah,,,need more info. A couple things come to mind anyway, scalloped/knobby tires or wheel bearings going bad, front or rear. ------------------ 1971 C10 swb stepside 350/700R4/3.73posi Killingworth, Connecticut __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.

05-12-2002, 10:09 AM	#5
67Fleetsidedream Wiseass secured himself a BAN Join Date: Nov 2000 Location: MOON!!! Posts: 2,282	It does it at around 1500-2500k rpm range in 3rd gear when moving down road. Ben

05-12-2002, 12:42 PM	#8
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	if it does it at same rpm no matter what gear you are in then its not tires, if it only does it at certain speed the its tires or could be driveline, have to sit down and think about what things would make sounds at certain rpm or speed and such. if you think its tires then swap a couple spares on the front or rear and then go drive again at same speed when it was doing it and see if it is, if it still is then chekc out the bearing, see how much slop is in it and also in the rear U joint at the rear axle, shake the driveshaft all around, or try to and look for slop, especially if truck makes a clunk! when you put it in gear(if its auto trans) i had a maybe similar kind of sound come from under the 79 G20 van when was cruising at around 75 or 80, like a hummmmmm......hummmmmm.....hummmmmm noise, thats when i knew i was really booking it down the freeway as the speedo was not connected up, it was either the little passenger tires not liking the rpm they were turnign or the driveline slip yoke with wear int he splines,. never did care to find out, it cruised liek a caddy so oh well. it was a neat sound actually, only someone like me would take a 79 G20 beater trashed van with door rotting off and loosing pieces of door skin and body side molding and other body panels onto freeway literally that fast and think nothing of it hell yeah zoom zoom good luck ! ------------------ Randy- Lincoln, IL randy@ccaonline.com 2177353230 many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham current fleet: -71 C-10 350/CH465/3.07- basketcase, #1 -90 Cavalier 2.2L sky blue, a driver -84 Z28 5.0L/700R4/3.73 daily driver -84 Firebird/SE 2.8L/T-5/3.73/engine bad, project #2 -82 purple Trans Am, project #3 Paint is overrated* © RSS Enterprises 2000 [This message has been edited by Fast68Chevy (edited May 12, 2002).]

05-12-2002, 03:05 PM	#10
67Fleetsidedream Wiseass secured himself a BAN Join Date: Nov 2000 Location: MOON!!! Posts: 2,282	I will check the carrier bearing. I don't think it is the tires. I bought 4 new ones 4k miles ago. Could the drift shaft be out of balance? I just does it at a certain RPM range. Ben

05-12-2002, 03:24 PM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	I have had worn rear bearings do this too. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. E-mail longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio

05-13-2002, 04:50 AM	#13
67lwbfleet Registered User Join Date: May 2000 Location: Brooklyn,,md. Posts: 68	Could it be the pinion gear in the rear?or low diff. fluid. [This message has been edited by 67lwbfleet (edited May 13, 2002).] __________________ 67 fleet 327cu.small window hope to grow up 1 day and be a big block im still in red primer.my owner lives in raven territory. BALTMORE,MD

05-13-2002, 05:38 AM	#14
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	my swampers sound like that at about 75 mph, and yes the old ones were cupped. ------------------ 67 stepside 4x4 Owensville MO mudder67@hotmail.com

05-13-2002, 06:24 AM	#15
kurts72 Registered User Join Date: Dec 2001 Location: Durand, IL Posts: 98	Tires is my vote. __________________ Kurt in Durand, IL



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05-13-2002, 07:23 AM	#16
imaindianoutlaw GMC SHORT FLEET F/S Join Date: Jun 2000 Location: SOUTH WILLIAMSPORT PENNSYLVANNIA Posts: 2,117	if its 4x4 its tires my bet ------------------ Charles W. Hein S. Williamsport PA imaindianoutlaw@yahoo.com REFRIGERATION TECH 1971 Rolling chassis FOR SALE 1963 Pontiac Tempest 1965 Pontiac GTO 1956 Pontiac 2 dr __________________ CHARLES WADE HEIN HVACR FOREMAN. LEWISBURG U.S.P.

05-13-2002, 09:03 AM	#17
Joachim Carolina Cajun Join Date: Mar 2002 Location: Concord, NC/Ponchatoula, LA Posts: 65	Have a similar sound in mine, believe it to be the speed-O cable. Tried lithium grease. Some relief but not totally gone away. Joe __________________ The Carolina Cajun, almost famous in North Carolina since 1989! Driving a 68 & Restoring a 66. Lookin' for Rochester Manual 1bbl & 2bbl carbs!! Concord, NC & Ponchatoula, LA

05-13-2002, 09:05 AM	#18
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Arsinial Hall? ------------------ Check out other members trucks 1968 50th Anniversary C-10 Suburban (Tows all these cars all over the place) 1968 50th Anniversary C-20 Pickup CST, Sold to Fine69 1969 SS Camaro Conv't 1960 Lakewood Travel Trailer 1963 Ford Falcon Wagon, Still For Sale Phoenix, AZ. Click Here for Parts and Venicles I have Available THINGS I AM LOOKING FOR: 67-68 SUBURBAN TRIM. $$$$ Reward for finding the 3rd door trim piece and the small piece that goes on the 1/4 panel right behind the 3rd door.Click Here to see the two pieces I need. __________________ Just sitting here contemplating contemplation.

05-13-2002, 11:24 AM	#19
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	is it comming from outside the cab, or inside, mine makes that sound too, but it is definitely the spedo cable, and it only does it in cold weather. I did have a big truck that made that sound one time, accompanied by a vibration, this was about 50 miles before the ring gear in the rear drive axle snapped in 3 pieces, i hope that is not your problem. ------------------ "In the words of Motley Crue, This will always be my home sweet home" Ol' Buck: '72 Chevy 1/2T 4x4 shortbox stepside 350/350auto on '84 ralleys and 31/10.5s Angel girl: 67 Cutlass convertible 330, 3spd stick Greener: 90 GMC Jimmy 350/auto Chad Stephens Orleans,NE no name yet: 72 442 under serious construction my site: http://communities.msn.com/Beastonabudget/homepage __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

05-13-2002, 04:42 PM	#20
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	What happens when you speed up and/or slow down in this RPM range? What about going around corners (1500-2000 RPM isn't all that much)? If you're sitting still, and your tranny is in N and you rev the engine do you hear the sound? Find a long hill, and start at the top. Put your truck in N and coast down. When you reach that familiar RPM range do you hear the noise? With that same hill start at the bottom, and drive up until you reach that RPM range (I assume you'll hear the sound). Does the noise sound worse than usual? Does it sound worse then when you coasted down hill? Is the sound coming out of a particular side of the truck?-front, rear, driver's side, passenger's side? Have someone ride in the back on a flat straight road with no other cars and listen... With what you're telling us it could be anything engine, trany, driveline, or differential related! Narrow it down. __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

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