Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Discussion > 1st Gen. Tacomas

Notices

Drive-line vibrations during acceleration

Reply
 
Thread Tools Search this Thread
Old 03-20-2011, 04:38 PM   #1
bmerr25 [OP] bmerr25 is offline
Junior Member
bmerr25 is on a distinguished road
Joined: Mar 2011, #53071
Location: Duluth, MN
Gender: Male
Posts: 5
bmerr25's Tacoma Gallery
Drive-line vibrations during acceleration

I have a 1997 Toyota Tacoma XtraCab 4x4 3.4L with a 5 speed manual transmission with 98K miles currently. I just bought this truck 3 weeks ago (I've already put on 3K miles)and fairly new to Tacoma's but am mechanically inclined and been working on cars for 15 years. I have a vibration that is mostly prominent in 2nd gear (initial shift into 2nd so RPM's are 1100-2100) during acceleration but vibration is in all gears/speeds during acceleration. Less vibration when I baby it and lightly apply throttle but can't seem to feel a difference if I press in clutch. No difference in 4WD or 2WD and feels like it's more from the middle of the truck to the front. No excess vibration in gear shift and seems to shift smoothly. I have had the propeller shaft completely rebuilt/balanced (u-joints in CV, rear most u-joint and carrier bearing had play), new OEM NGK spark plugs gapped to .044 and cleaned the throttle body (the ones I took out were very worn OEM plugs and t-body was dirty). I haven't checked the front drive shaft, fluid levels in the t-case, trans or diffs yet. I almost feel the engine is slightly under powered but it runs very smooth at idle and the oil after 3K miles is still clean with minimal consumption and no smoke out of tail pipe. I get 17.5mpg if all 55-60mph driving, 15.5 if all highway at 75mph and 15 average city/75mph highway driving. I don't know if the timing belt was done yet and would be willing to bet it hasn't. The clutch grab is at the top of the pedal but not slipping and the tires are BFG A/T's that have weather cracking in between the tread blocks but not on the side walls and approximately 50-75% tread. Brakes seem good and visual inspection underneath reveals no fluid leaks, anywhere.
The possibilities I have come up with:
1.Front drive shaft u-joints.
2.Clutch throwout bearing/pilot bushing
3.Engine timing is off
4.Transmission /T-case/Differential
5.Motor/Trans mounts
6.Fuel pressure/fuel filter issue
I know its a long post but its informative! I'd really appreciate someones help. As you can see, I put on a lot of miles and have minimal time for mechanical repairs so pinpointing this issue minimizes down time and just "throwing parts" at it. Thanks Everyone!!!
  Reply With Quote
Old 03-20-2011, 04:39 PM   #2
With sufficient thrust, pigs fly just fine.
chris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shed
 
chris4x4's Avatar
Name: FlimFlubberJAM
Joined: May 2008, #6497
Location: Tenoe, AZ
Gender: Male
Posts: 98,891
chris4x4's Tacoma Gallery
Maybe the carrier bearing.
  Reply With Quote
Old 03-20-2011, 04:47 PM   #3
bmerr25 [OP] bmerr25 is offline
Junior Member
bmerr25 is on a distinguished road
Joined: Mar 2011, #53071
Location: Duluth, MN
Gender: Male
Posts: 5
bmerr25's Tacoma Gallery
The carrier bearing was replaced when the rear propeller shaft was fully rebuilt.
  Reply With Quote
Old 03-20-2011, 04:49 PM   #4
With sufficient thrust, pigs fly just fine.
chris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shed
 
chris4x4's Avatar
Name: FlimFlubberJAM
Joined: May 2008, #6497
Location: Tenoe, AZ
Gender: Male
Posts: 98,891
chris4x4's Tacoma Gallery
Quote:
Originally Posted by bmerr25 View Post
The carrier bearing was replaced when the rear propeller shaft was fully rebuilt.
Yeah....I missed that.....still thinking..
  Reply With Quote
Old 03-20-2011, 07:44 PM   #5
Senior Member
skytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shedskytower is one of the sharper tools in the shed
 
skytower's Avatar
Navy: Gunners Mate
Name: Dave
Joined: Jun 2010, #38505
Location: virginia
Gender: Male
Posts: 3,199
skytower's Tacoma Gallery
Speed related vibrations point to a wheel issue. Either bent rim, out of balance wheel, broken belt in tire, out of round tire.
  Reply With Quote
Old 03-20-2011, 08:21 PM   #6
bmerr25 [OP] bmerr25 is offline
Junior Member
bmerr25 is on a distinguished road
Joined: Mar 2011, #53071
Location: Duluth, MN
Gender: Male
Posts: 5
bmerr25's Tacoma Gallery
Thanks for the reply, skytower
I agree with you but the only argument is that the vibration comes from when throttle is applied...the more throttle the heavier the vibe. Tires would usually exude "typical" vibrations such as vibrations at a specific speed, on/off vibration depending how load is applied (ie: turning at highway speed) or tread patterns (ie: M/T, A/T etc.). Although I have seen some weird issues with tires I just wouldn't bet that that is the cause of this particular issue. Yes, tires do need replacing due to weather cracking and am experiencing a tire/wheel balance issue at approximately 62-68mph currently. These vibrations are too different to be one in the same...its more of a buzz. I will be under the truck next weekend installing new leaf springs, 1" lift shackles (this truck is mostly highway driven...for now!), Bilstein 5100's on all corners and ALL fluids changed so I will be looking for anything/everything that screams a possible problem and update this post if I find something. I know vibrations sometimes are hard to diagnose but strongly feel its engine/trans related. In the meantime...please keep your thinking caps on and replies comin'! Thanks!
  Reply With Quote
Old 03-21-2011, 09:05 AM   #7
Senior Member
ywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shedywen is one of the sharper tools in the shed
Joined: Nov 2009, #26636
Gender: Male
Posts: 1,058
ywen's Tacoma Gallery
Why do you suspect the front drive shaft U joints? Shouldn't they be free spinning?
  Reply With Quote
Old 03-21-2011, 07:03 PM   #9
Junior Member
JakeInGrayTacoma is on a distinguished road
Name: Jake
Joined: Feb 2011, #51390
Location: SoCal Mtns
Gender: Dude
Posts: 19
JakeInGrayTacoma's Tacoma Gallery
I've experienced this vibration during acceleration as well. What could it be?
  Reply With Quote
Old 03-22-2011, 06:31 PM   #10
bmerr25 [OP] bmerr25 is offline
Junior Member
bmerr25 is on a distinguished road
Joined: Mar 2011, #53071
Location: Duluth, MN
Gender: Male
Posts: 5
bmerr25's Tacoma Gallery
bowyer2002,
Allow Google to be your friend with finding part number for the carrier bearing. To many variables such as year, engine, 4WD, cab, etc. I don't have the part number...had my friend at his driveline specialty shop do all the work. Sorry...Good Luck!

JakeInGreyTacoma,
I think I may have figured it out. When I removed the driveshaft to have it rebuilt, upon reinstalling it I found my right rear leaf spring cracked. Springs sag over time and this aint no spring chicken being a '97 so moderate sag changes suspension/driveline geometry. Well, over the last week I lost one half of one leaf in the leaf pack...vibration got a little more noticeable. Drove it last night and lost the other half plus half of another leaf so it only has 2 out of four leafs...dangerous and now she sits waiting for the new parts to arrive. Anyway, after I heard a chunk of metal fly off while driving I noticed the vibration got worse. I can only come up with one conclusion so if anyone out there reading this correct me if I'm wrong. The damaged/missing/sagging spring(s) is allowing the axle to wrap changing the pinion angle and hence putting load on the driveshaft joints and slip causing vibration under load, up hill or moderate acceleration. The shocks are smoked too so there isn't anything really helping here but in two days I will install the new leaf springs, shackle kit, new bushings, and Bilstein 5100's at all four corners. I will update this post following replacement and let y'all know!
  Reply With Quote
Old 07-02-2013, 07:23 PM   #11
Junior Member
Born Again Taco is on a distinguished road
 
Born Again Taco's Avatar
Army: Iraq Vet NYNG & 1/3 Cav Active duty (8 yrs total)
Name: Andy
Joined: May 2013, #103937
Location: Ohio
Gender: Male
Posts: 10
Born Again Taco's Tacoma Gallery
same problem

I have a 96 taco with an automatic and in the last week, I started noticing this same vibration. It's only during acceleration and seems most active between 52 and 58 ish. I've recently changed fluids in the diff and transfer. Greased the driveshaft, topped off tranny fluid (was low) and changed to some NGK g-power plugs.

I've checked the trans mount, that's good. Shook the u-joints, they seem tight. There's gotta be a solution to this!

also, i put new leaf springs in back around Thanksgiving 2012.
  Reply With Quote
Old 07-04-2013, 06:46 AM   #12
Junior Member
Drcoffee is on a distinguished road
Joined: Aug 2012, #84720
Gender: Male
Posts: 20
Drcoffee's Tacoma Gallery
What about fuel injectors. An imbalance of flow could cause a rough acceleration. Check your plugs. 3 should look different from the other 3.
  Reply With Quote
Old 07-05-2013, 08:21 AM   #13
Junior Member
Born Again Taco is on a distinguished road
 
Born Again Taco's Avatar
Army: Iraq Vet NYNG & 1/3 Cav Active duty (8 yrs total)
Name: Andy
Joined: May 2013, #103937
Location: Ohio
Gender: Male
Posts: 10
Born Again Taco's Tacoma Gallery
Quote:
Originally Posted by Drcoffee View Post
What about fuel injectors. An imbalance of flow could cause a rough acceleration. Check your plugs. 3 should look different from the other 3.
wouldn't that throw a misfire code? I've got the 4 banger, but I recently put different plugs in it. Seems that the vibration stops (while still accelerating) if I hit a hard bump which momentarily pushes the rear axle up. Like maybe it's a driveline angle problem?
  Reply With Quote
Old 07-05-2013, 10:46 AM   #14
Senior Member
vtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to all
 
vtrguy's Avatar
Name: Jarrod
Joined: Dec 2012, #94030
Location: Bay Area
Gender: Male
Posts: 449
vtrguy's Tacoma Gallery
If you're lifted it could be the driveline angle.

There are degree shims available online that are fairly easy to install.

Did you check your carrier bearing? That's where it seems most of the problems come from and it's where mine are coming from right now but it doesn't bother me that much.

Yay for a 2 year old thread bump too
  Reply With Quote
Old 07-05-2013, 11:35 AM   #15
EASY WIND
Dirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shedDirty Pool is one of the sharper tools in the shed
 
Dirty Pool's Avatar
Joined: Mar 2013, #100471
Location: 59.4 Miles, 56.67*NE Of Moab
Gender: Male
Posts: 548
Dirty Pool's Tacoma Gallery
Quote:
Originally Posted by vtrguy View Post
If you're lifted it could be the driveline angle.

There are degree shims available online that are fairly easy to install.
Yay for a 2 year old thread bump too
X2, even with no lift, the crappy "progressive" TRD springs were known for this issue from day one. As load is put on the drive line the rear diff tends to rotate the pinion up. So, no load, pinion angle near OK = smooth, under load, pinion to far "up" = vibration.
In theory the differential pinion should point at the carrier bearing flange. In the real world a slight amount of down bubble ends up being ideal. Not enough to cause vibes in itself but enough to put the pinion angle closer to ideal under load.
I run about 1-2 degrees of down but my springs are very resistant to axle wrap.
  Reply With Quote
Old 07-06-2013, 05:46 AM   #16
Junior Member
Born Again Taco is on a distinguished road
 
Born Again Taco's Avatar
Army: Iraq Vet NYNG & 1/3 Cav Active duty (8 yrs total)
Name: Andy
Joined: May 2013, #103937
Location: Ohio
Gender: Male
Posts: 10
Born Again Taco's Tacoma Gallery
I pulled my driveline last night and my carrier bearing seems to be ok. I have 1 u-joint that I'll replace and another that was a little stiff cause it woudn't take grease. After I get these issues dealt with, maybe angles are my next problem. Will see... then update

Yes, I know I bumped a 2 year old thread, but I need answers dangit!
  Reply With Quote
Old 07-06-2013, 08:51 AM   #17
Senior Member
vtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to all
 
vtrguy's Avatar
Name: Jarrod
Joined: Dec 2012, #94030
Location: Bay Area
Gender: Male
Posts: 449
vtrguy's Tacoma Gallery
And we're all here to help

did you center and true your driveline?

If it's clocked correctly it can still be rotating out of round
  Reply With Quote
Old 07-07-2013, 06:59 AM   #18
Junior Member
Born Again Taco is on a distinguished road
 
Born Again Taco's Avatar
Army: Iraq Vet NYNG & 1/3 Cav Active duty (8 yrs total)
Name: Andy
Joined: May 2013, #103937
Location: Ohio
Gender: Male
Posts: 10
Born Again Taco's Tacoma Gallery
I FIXT IT!

I took my driveshaft out and tore it all down. I replaced a bad grease fitting and put grease in a u-joint that wouldn't previously take grease. Then I replaced the u-joint closest to the rear diff.

But here's what I believe was the culprit.... I put TOO MUCH GREASE in the slip yoke!! I haven't greased a slip yoke in a long time, so I just packed it full of grease. I believe I pushed it out too far and stiffened it up, which affected the angle of the driveline THUS causing my vibration.

So, I also ran all that grease out of the slip yoke and NOW, there's zero vibration. And DUH, I put a reasonable amount of grease back in. Now, I'm just glidin' down the highway.
  Reply With Quote
Old 07-07-2013, 08:52 AM   #19
Senior Member
vtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to allvtrguy is a name known to all
 
vtrguy's Avatar
Name: Jarrod
Joined: Dec 2012, #94030
Location: Bay Area
Gender: Male
Posts: 449
vtrguy's Tacoma Gallery


  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
is there a solid drive line/ drive shaft. TROKITA 1st Gen. Tacomas 18 10-23-2011 06:30 AM
Vibrations while acceleration siltoyo Technical Chat 3 05-28-2011 02:38 PM
Bad vibrations (need new drive shaft) ImthePrez 2nd Gen. Tacomas 7 05-17-2011 01:17 PM
Vibrations and Sluggish Acceleration from Idle newtac 2nd Gen. Tacomas 4 02-02-2011 06:29 PM
Need Advice! Drive Line Vibrations ruppmeister 2nd Gen. Tacomas 2 10-10-2009 10:03 AM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.