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bad vibration at about 70mph

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Old 08-14-2006, 09:58 PM
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Default bad vibration at about 70mph

Starting about a month and a half ago,whenever I start to approach 40mph and up my pickup begins to vibrate. Nothing terrible until I hit about 70mph, when it really begins to shake. Its not the tires; discount gave me four brand spanking new tires today, and the problem still exists. I am running 3.90 gears, and I read the driveshaft thread, but I don't think it has anything to do with the driveshaft. Does anyone have any suggestions or ideas?

thanks guys!
Old 08-14-2006, 10:30 PM
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drive shaft
Old 08-14-2006, 10:32 PM
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Did you lower?
Old 08-14-2006, 10:37 PM
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Driveshaft
Old 08-14-2006, 11:06 PM
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take your driveshaft to a shop and have it balanced I bet that wull fix it
Old 08-15-2006, 02:54 AM
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No, my pickup hasn't been lowered.

As for the driveshaft, why do y'all say its that....? I mean, lots of people get their gear ratio changed; this is the first time I've heard of that?
Old 08-15-2006, 08:17 AM
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you could have dinged the shaft with an object from the road or hit it aganst somthing. If there was a factory weight you could have thrown it off. I would first visually inspect it to look for dents of dings or spots where a weight used to be. While I was doing this I would swap u-joints too

Last edited by Dock Rocker; 08-15-2006 at 09:01 AM.
Old 08-15-2006, 08:18 AM
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Originally Posted by Dock Rocker
you could have dinged the shaft with an object from the road or hit it aganst somthing. If there was a factory weight you could have thrown it off. I would first visually inspect it to look for dents of dings or sopts where a weifht uded to be. While I was doins thee I would swap ujoints too
I take it I wasnt the only person inebriated...

but thanks y'all!
Old 08-15-2006, 09:02 AM
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Originally Posted by 4.8 Liter Of Cola
I take it I wasnt the only person inebriated...

but thanks y'all!
Trying to work and type is a challenge sometimes
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