Shakin in my Boots
#1
Shakin in my Boots
I searched about this for a while but didn't find 2 much. When I drive and get to about 68 mph my truck gets the shakes pretty bad. Always has since i've owned the truck. I'm pretty sure it's the drive shaft since when I changed gears from 3.73 to 4.10 the shake happens at a lower speed. It's so bad/annoying that I can't drive any fast, and most of the speed limits I drive are 70 mph. Also only a couple weeks ago I did change out both of the universals, and I don't think its the tranny b/c it has done it with two different ones. I've also turned the drive shaft 90* at the axle to all four positions to see if that might help, but only a little bit. So driveshaft or something else?
I've heard of having the driveshaft balanced, how much does that usually cost?
Is there a DIY method?
I've heard of having the driveshaft balanced, how much does that usually cost?
Is there a DIY method?
#2
Alright well I played with this a little more trying to get this truck smoother. I added some weight with a pipe clamp and got a little more vibration out. But the tranny lost OD so it's a moot point. It still vibrates good when I hit 65mph but if I get up to 85mph it smooths back out, ne one have a clue why it would do that?
My tranny is comin back from the shop in the next couple days so when I go to swap it in i'm going to have the tires and drive shaft balance. Is there anything else you guys would suggest to get the vibrations out??
My tranny is comin back from the shop in the next couple days so when I go to swap it in i'm going to have the tires and drive shaft balance. Is there anything else you guys would suggest to get the vibrations out??
#6
#7
ALright guys I really need some opinions please.... I just talked to the drive shaft shop that I had sent the drive shaft to in order to have them balance it. They said the drive shaft is 6 inchs longer than a 3 inch diameter drive shaft should be and that's whats causing the problems. They said they can't balance it since its too long and it would cost 250 to build a new one.... what do u guys think? ever heard of this before?
#8
#9
#16
#17
Yea as far as I know the truck would have originally come with a two piece drive shaft. The one on the truck now was custom made for the truck, knowing the swap had already been done.
I talked to the shop again and the new driveshaft would be made out of 3.5" steel compared to the 3" steel driveshaft that I have now.
I talked to the shop again and the new driveshaft would be made out of 3.5" steel compared to the 3" steel driveshaft that I have now.
#22
Originally Posted by Gearhead61
I get the same thing, but my truck doesn't have much in common with yours. I think it's the wheels needing balancing though... Just haven't had time to do it yet.
That was just a mild imbalance though. It sounds like his problem is a lot worse than mine was.
#23
Alright guys I still need some help please. I now have a new 3.5" inch thick walled steel drive shaft, balanced tires, new rear axle, and a newly rebuilt tranny all installed. I still get vibrations once I hit 70 mph and they get worse the fast I go. Also I got some vibration right aroun 40 mph. It's definately better than it was before, but not good enough. What else should I be checking or could cause this nusance?
Any and all comments are greatly appreciated, i've run out of ideas...
Any and all comments are greatly appreciated, i've run out of ideas...
#25