I bought a brand new Wrangler Sahara Unlimited. Vehicle has a vibration when acclerating up to 30 to 40 kph
Take it back to the dealer. Unless the demonstration vehicle had a vibration, something is wrong with yours. You bought the car with a warranty. It's their job to find the problem and fix it.
You my friend will be seeing the dealer alot!
When my 03 rubicon was shaking it was at 50-60. It started 2 weeks after I bought it. 2 days it shook real hard on the highway. So I was taking it after school to the shop and then my wheel fell off on the highway! Shredded the bolts right off. We couldn't figure out why it did it but we came to the conclusion it had to be these. check the bolts make sure they are tight, the balance, and alignment. To this day its still a mystery to me. Hope this helps a little.
make sure the lugs are tight then i would check out the steering components like the tie rod ends. also look at the bushings for the control arms. i lifted my grand and had the same problem until i replaced them. theres also the ball joints which can go bad as well. ha last thing i can think of is the hub bearing assembly. i would go through and just see if anything wiggles first.
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