Have you developed VIBES or Humm/Buzz Since Lifting?

Unistrut washers work great for shims. If you dont have a workplace that has them laying around everywhere they are available at homedepot in the electrical department usually.

http://www.talleycom.com/store/images/products/big/LDRPS619-38_big.jpg

 

Glad that's fixed.

Looked pretty ugly.

Not fixed!? Good luck finding the problem. Hopefully it's a little better than the vid, anyway.

 

First, I had the 40-50 mph vibration (hum) from the floorboard which goes away in 4 wheel drive after I did my lift. Read here it most likely is the diff bearing.

So I tried a 1" diff drop, and OMG it made it 10x worse! Vibration from 10-60 mph and a whah whah whah feeling around 50 mph. So I yanked off the diff drop and it went back to the 40-50 mph hum.

Today, just taking a shot in the dark, I installed Toytec 3 deg shims on the rear. ....... and it worked! No vibrations at any speed. Doesn't make since to me but I am not going to complain.

Reg Cab 4x4 2.7 4 banger
2.5" Billie lift, DSM UCA's, with 1.5" AAL

 

In the poll, I selected, "Had the vibrations but fixed them (please post to explain)."

This is my explanation.

I have a 2WD DC Prerunner. After I installed a 4" Camburg spindle lift in the front and a 3", 11-leaf spring pack from All Pro Offroad in the rear, I had a drive line vibration from 0-45 mph. I installed 4-degree axle shims to correct the pinion angle and the vibrations disappeared. No carrier bearing drop was needed.

 

Only noise i have is from my tires

 

Thanks, subbed

 

Yup, soon as I test drove after putting the lift on the front got a vvvvvvvvvvvibration, and after hoping it was alignment, it turns out it is going to be front differential bearing. My truck is still under warranty and I am hoping they'll fix me up for free, well prob a few days w/o a truck. I'll post with any solutions that have occurred.

 

I think a good question is.... Are the long boxes or short boxes more susceptible to vibes?

 

Lifted ones , yes

 

I had bad vibes after LT. I added 4 degree shims and now i only have slight vibe at 12mph. I use 1/4 inch washers on my cb bracket

 

Vibes at 20 and 40 mph. Toyota completed the 20 mph TSB. Still had vibes. Just yesterday driveline company diagnosed it as the spider gear near the driver side tire. They do not believe that my 3 inch lift would have caused this. My truck is out of warranty but Toyota is still going to fix it because I had it documented with their dealership. I will tryand update for everyone. Driveline shop has seen a few lately. The best part is toyota has inspected my truck 3 times. Driveline shop inspected it for one hour and found the problem AND it was free.

(so far I have fixed the 1000 rpm cold vibe, ticking blower, squeaky seat, and my cold/hot air switch...keep em coming)

 

Appointment with Toyota today went great. 4th time at their dealership. Today they stated it was the front differential. Going back next week to have it replaced with 1000 miles left until my warranty expires. Frustrating it took so long, 4 inspections, countless hours of reading online, and finally having to go to a driveline shop.

Looking forward to next week. I may start another post with my results in anyone is interested.

 

Somewhat weirdly - my vibes are worse since regearing from 4.10 to 4.88.

I suppose it makes since since the driveshaft is spinning 20% faster at any given speed. Still annoying, though.

 

I recently lifted my doublecab Prerunner and have some slight vibes from 15-25 mph. I lifted it 4.85 up front by way of Camburg spindles and .85 on my 5100s. 4 inches was lifted in the rear by way of All-Pro Expo springs. I decided to take some measurements prior to diving in and buying shims or a carrier bearing drop.



I've come to the conclusion that I can put a 3 degree shim in the rear that will bring the angle to a more optimal 3.9 degrees (6.9 - 3). This should cure my small vibes. A few other things to note:

- My trans output to my 1st shaft is at 3.5 degrees as shown in the picture above. This angle could not change with my lift as both the transmission and carrier bearing are on fixed mounts...so this angle would stay the same post lift.

- I could also throw in a small carrier bearing drop (washers) in a addition to the shims; however, bringing the carrier bearing down will also cause my trans to first driveshaft angle to increase while decreasing my 1st to 2nd shaft angle....by my calculations. Not sure if I want this as my factory trans to 1st shaft angle at 3.5 degrees already seems a bit high. We'll see

All in all I'm ordering the 3 degree ToyTec shims this weekend and I'll take new measurements once installed. Thoughts?

 

Bump...what do you experts think? Am I on the right track?

 

I believe this original post was about front end vibration on 4WD trucks.

 

I believe you are wrong - the original post says nothing about vibes just for 4 wheel drive trucks. Mine is lifted w/vibes so I posted

 

Sorry kid. Good luck.

 

I have some pretty bad vibes after my non-TSB 2"AAL install. They're anywhere around 20mph. I didn't have any vibs after lifting the front. The AAL did it.

I didn't follow the instructions very well however. I dropped the entire rear axle and worked on both AALs at the same time...

 

Lifted the front with 5100's last week at 1.75 to level the front of non tsb rear.... leveled it but it had a pretty noticeable front diff whine and vibrations from 20 till about 45 mph .... Just dropped it down to .85 and it netted just about an inch ... whine went away and vibrations are very very light and I think those are from the new tires honestly. Front now sits 1 in lower than rear