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07-09-2009, 06:06 PM
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#1 |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Weird vibrations...
yesterday i installed new sway bar bushings and when i was finished i took her out for a test drive and it handled great. but then this morning i took the truck out again to go a couple places in town and i noticed some abnormal vibrations when i accelerated from a stop. then it sorta went away around 35-40. when i got home i looked over everything and couldn't find anything out of the ordinary.
 i know there is some smart guys on this site, so anyone have any ideas?
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Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
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07-09-2009, 11:31 PM
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#2 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,313
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Re: Weird vibrations...
do you have a one or two piece driveshaft? the carrier bearing on a two piece is always good for a vibration...
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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07-10-2009, 12:12 AM
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#3 |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Weird vibrations...
nah it's a one piece. it doesn't happen when idling or in reverse, just drive
__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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07-10-2009, 09:27 AM
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#4 |
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Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,313
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Re: Weird vibrations...
motor mount?
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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07-10-2009, 10:44 AM
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#5 | |
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Registered User
Join Date: Jun 2008
Location: lake worth fla.
Posts: 125
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Re: Weird vibrations...
Quote:
it is difficult to diagnose with out driving it but the fact that you don't feel it as much between 35-40. i suspect 1 or more of your tires is out of balance. installing new sway bar bushing is not going to cause a vibration, technichly sway bars only affect your suspension dynamics in a turn or uneven road surface. this post got my thinking about some of the pranks we would play on coworkers when i was at the dealer. when no body was looking we put a bunch of stick on weights on one of the other guys wheel or drive shaft and it would make a crazy vibration  
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07-10-2009, 11:40 AM
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#6 |
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Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,684
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Re: Weird vibrations...
U-joints tight?
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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07-10-2009, 12:29 PM
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#7 |
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Gen III Power
Join Date: Sep 2007
Location: Hesperia CA
Posts: 318
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Re: Weird vibrations...
I was chasing a vibration for awhile and it ended up being a bent rim. I could have the tire/wheel re-balanced and it would be better for about 500 miles then it would come back ?? I have had them balanced 3 times now within 3,000 miles since I cant get ahold of decent rims yet.
I went as far as 4 brand new tires, wheel bearings, new u-joints and balance and motor/trans mounts. All those things where not the issue, but it didnt hurt to do 
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---Bob--- '81 Long Box. 2005 5.3l Vortec and 2005 4L80e coming soon... |
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07-10-2009, 12:35 PM
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#8 |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Weird vibrations...
thank you guys for the suggestions, i will check it out again today
__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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