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Register Log In 4x4Wire TrailTalk Forums Early Toyota Trucks '86 vibrations while coasting down hill. Forums User List Calendar Active Threads Search Forum Help

Previous Thread Next Thread Print Thread Rate Thread Page 1 of 2 1 2 '86 vibrations while coasting down hill. #889352 06/06/08 10:28 PM Joined: Aug 2007 Posts: 66 Phoenix AZ A AZcoma OP Getting the Wheeling Fever Took a couple of trips up to northern AZ the past month and I have this pretty significant vibration in the drivetrain when coasting down hills (letting off the throttle). Once I apply the throttle, it goes away. U joints have never been replaced but lubed religiously. 150k miles with 4" springs and 2" shackles. I have shims between the springs and the perch. Easy way to tell if it's the U-joints or the pinion bearing going south? '86 4x4 SR5 22re 5" lift 35" BFG's and 5:29 gears. '05 4x4 DC Tacoma TRD Sport Re: '86 vibrations while coasting down hill. [Re: AZcoma] #889353 06/06/08 10:42 PM Joined: Jan 2000 Posts: 12,153 N. California. USA 4Crawler Web Wheeler Check the u-joints, pinion flange and slip yoke for play. How? Grab ahold of the drive shaft and give it a tug. Also, check the pinion angle, could be it is a little too low: - http://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtml#Measurements r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad - 4x4Wire discount code Re: '86 vibrations while coasting down hill. [Re: 4Crawler] #889354 06/06/08 11:18 PM Joined: Aug 2007 Posts: 66 Phoenix AZ A AZcoma OP Getting the Wheeling Fever Quote Check the u-joints, pinion flange and slip yoke for play. How? Grab ahold of the drive shaft and give it a tug. Also, check the pinion angle, could be it is a little too low: - http://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtml#Measurements I'll be giving it the once over this wkend. I also have a digital angle finder that should help with the pinion angle verification. '86 4x4 SR5 22re 5" lift 35" BFG's and 5:29 gears. '05 4x4 DC Tacoma TRD Sport Re: '86 vibrations while coasting down hill. [Re: AZcoma] #889355 06/07/08 01:17 AM Joined: Jul 2005 Posts: 95 Cape cod P philly Getting the Wheeling Fever is it a vibration or a grinding vibration sound? mine does the same ***** i think its more of a grinding vibration in the tranny or tcase, no clue about it tho. gota figure that out so i can drive on the highway again, only does it past 50 mph <img src="/forums/images/graemlins/zombie.gif" alt="" /> Re: '86 vibrations while coasting down hill. [Re: philly] #889356 06/07/08 02:55 PM Joined: May 2008 Posts: 27 E Ezrider_92356 Getting the Wheeling Fever when you do the shake test on the u joints chock the tires and put it in newtral a load on the shafts can give the false indication of a good tight u joint, any play and they should be replaced. Re: '86 vibrations while coasting down hill. [Re: Ezrider_92356] #889357 06/09/08 05:13 PM Joined: Aug 2007 Posts: 66 Phoenix AZ A AZcoma OP Getting the Wheeling Fever maybe my shims are in backwards?? I checked the U-joints and they are tight. Checked the angle and it appears that the diff is pointed up at the Transfer case. The shims in place have the wedge section in the rear which tips the diff up. Is this wrong? '86 4x4 SR5 22re 5" lift 35" BFG's and 5:29 gears. '05 4x4 DC Tacoma TRD Sport Re: '86 vibrations while coasting down hill. [Re: AZcoma] #889358 06/09/08 05:19 PM Joined: Jan 2000 Posts: 12,153 N. California. USA 4Crawler Web Wheeler Depends on what type of driveshaft you have: - http://www.4crawler.com/4x4/ForSale/Shims.shtml#FAQ6 - http://www.4crawler.com/4x4/ForSale/Shims.shtml#FAQ1 r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad - 4x4Wire discount code Re: '86 vibrations while coasting down hill. [Re: 4Crawler] #889359 06/09/08 05:26 PM Joined: Aug 2007 Posts: 66 Phoenix AZ A AZcoma OP Getting the Wheeling Fever stock driveshaft of 86 Toy extra cab. It's a single. '86 4x4 SR5 22re 5" lift 35" BFG's and 5:29 gears. '05 4x4 DC Tacoma TRD Sport Re: '86 vibrations while coasting down hill. [Re: AZcoma] #889360 06/09/08 09:14 PM Joined: Jan 2000 Posts: 12,153 N. California. USA 4Crawler Web Wheeler Quote stock driveshaft of 86 Toy extra cab. It's a single. With u-joints on both ends, you want the t-case and pinion flanges to end up nearly parallel: - http://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtml#Single-Cardan-Measurements r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad - 4x4Wire discount code Re: '86 vibrations while coasting down hill. [Re: 4Crawler] #889361 06/09/08 10:50 PM Joined: Aug 2007 Posts: 66 Phoenix AZ A AZcoma OP Getting the Wheeling Fever bummer! Just finished taking the shims out and the angles are closer but I'm still 6 degrees off between the two. I'll drive it for a bit and see if there is a reduction in the vibration. If not, I guess I'll be looking into some new shims. '86 4x4 SR5 22re 5" lift 35" BFG's and 5:29 gears. 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