100 series harsh ride small bumps.

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thank you MJK. put almost new shocks on the front. made a small difference but not huge. Is it possible the 2 puck shaped rubbers on top of the shocks that go either side of the chassis mount, are to soft and that they are creating some movement ? the original toyota ones were much harder and thinner.
Tires are 275/70 R16 114S 694 bridgestone duelers A/T. Not sure of the ply rating but they currently at 15psi pressure.
After cleaning the torsions i found the number 60010L and 60010R on them which point to them being stock bars, i may be wrong as they do feel a little stiff.
It may just boil down to interior being slightly loose. The dash feels all tight but may just have a bit of wear behind it on the mounting points.
 
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Rolocado said:
That's just what I've experienced in trying to get my cabin noise dialed in. I slowly went through my suspension and bushings, etc and found the biggest improvement in new shocks (like I mentioned, I got Icons). Maybe there's a Mud member close to you that has another set of shocks lying around to see if they help at all
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I've been through fox shocks,OME, and OEM.. Toyota OEM has been the best, I'll admit a lot of
bushcar69 said:
thank you MJK. put almost new shocks on the front. made a small difference but not huge. Is it possible the 2 puck shaped rubbers on top of the shocks that go either side of the chassis mount, are to soft and that they are creating some movement ? the original toyota ones were much harder and thinner.
Tires are 275/70 R16 114S 694 bridgestone duelers A/T. Not sure of the ply rating but they currently at 15psi pressure.
After cleaning the torsions i found the number 60010L and 60010R on them which point to them being stock bars, i may be wrong as they do feel a little stiff.
It may just boil down to interior being slightly loose. The dash feels all tight but may just have a bit of wear behind it on the mounting points.
Click to expand...


So after chasing down clunks and harsh rides in my rig for a while now I can add a few bits of advice as my ride is slowly improving.

> When you feel the clunk as you are coming to a stop light and it feels like someone rear ends you, the rear DS slip cures this
> When you get the P-R-N-D clunk when shifting, I found the front slip to be an issue. I wasn't able to pump enough grease into the slip so had to remove, clean,grease, and re-assemble ( this cured a lot of my driving clunks)

> Call me crazy, but my front end was sagging, about 18.5" from center hub to fender. Got the local mechanic to adjust me back to stock height and it feels like a much better ride around town over all the cracks. I ride the same road every day so can compare nicely. Maybe adding a bit of rigidity to ol' saggy torsion bars helps


Stock ride height, KO2, 8ply, D range tires @ 35psi all around. Front and rear armor. OME medium spring in rear. Fox shocks in rear. Toyota OEM up front.
 
l3n0x said:
Have you figured this out?
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In my situation, which will differ from others, a lot of the rough ride is just from the k02s and interior noise.


When I install my snow tires the ride gets alot smoother, just feels like the bumps are dampened more. When I removed all the crap out of my glove box, doors, etc. it also quiets down.

Rear sway bar links in my case were worn, causing some clanking, but not much of a difference when replacing expect for the clanking went away. Front sway bar links and bushings are new, shocks all around are new as well. lower ball joints also replaced.

Just a twenty year old truck making old truck noises
 
usedname said:
I have this. Rear DS slip? What is that?
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That would be my suggestion. This vehicle can produce lots of clunks but in my experience when rolling up to a light and you get the rear end clunk it is fixed when I pump into the rear slip . The driveshaft has several grease fittings , I'm responding from my cell an can't really post the diagram . Crawl under the truck , find driveshaft and located the grease fittings .

My front seems to have a tougher time getting grease to the seal but in the rear I can hit it with 5-10 pumps and a little grease comes out around the seal.

No promises but that's a good easy place to start.
 
Mike NXP said:
I've been through fox shocks,OME, and OEM.. Toyota OEM has been the best, I'll admit a lot of
Click to expand...
Feeling like my hundy is riding really rough. Figured my stock shocks were shot but checked the rear and they are not blown and take a lot of force to compress. Wondering if they could still be bad or this is just the 33's I'm running at the 41/44 psi fr/rr.
 
Have you determined if your tires are are E rated? THAT alone will make a light truck (yes, a 100 is still a light truck) feel rough - on the little stuff.

I have a 2006 with E-rated 275/70/18 BFGs and a 2020 4Runner with C-rated 265/70/17 BFGs and the ride is night and day. The 4Runner is butter smooth. The 100 is rough by comparison... very rough.

Full disclosure, the 100 has 190,000 miles, but the suspension (IronMan springs, shocks, TBs) has about 90k, and the 4Runner is stock with 40,000 miles. But I'm comparing the ride on good to moderate pavement - just hitting expansion joints, , etc.
 
I'm running 285/70R17 Load Range C BFG KO2 tires.
 
Manhattan said:
Have you determined if your tires are are E rated? THAT alone will make a light truck (yes, a 100 is still a light truck) feel rough - on the little stuff.

I have a 2006 with E-rated 275/70/18 BFGs and a 2020 4Runner with C-rated 265/70/17 BFGs and the ride is night and day. The 4Runner is butter smooth. The 100 is rough by comparison... very rough.

Full disclosure, the 100 has 190,000 miles, but the suspension (IronMan springs, shocks, TBs) has about 90k, and the 4Runner is stock with 40,000 miles. But I'm comparing the ride on good to moderate pavement - just hitting expansion joints, , etc.
Click to expand...
 
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After mounting stock size Michelin LTX SL rated on my 100 and getting rid of rock hard Bridgestones that were there, the ride improved but not great, still really sensitive to small bumps. Many bushings later it’s better but again, not great.

It does improve dramatically when loaded with my weekly Costco run full of beers though.
My theory? It likes beers just as it likes fuel, very much like it’s owner;)

My technical theory? My front torsion bars need a couple turns up every few years.
 
Interestingly, I just added air bags to the rear stock suspension for towing and unloaded at about 20psi the rear rides better.
 
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