Ok. Update - I replaced the steering rack bushings with the Energy Suspension bushing kit from Wheelers Off-road. They were great to deal with; answered all my questions.
So I battled with the steering rack and really had to try hard to get those old bushings out. It was quite a session. So I got the new ones in and went for a drive on the freeway ....And.... it still shakes. :cry2:
This is so frustrating. Any ideas on what else it could be? Should I try to balance the wheels a 3rd time ?
I'm no expert but pushing your 4Runner over 95mph isn't a brilliant idea...
Chasing vibrations on the 3rd generation is tough. My issue was solved by replacing out of round brake drums.
My shaking was from the double cardan joint in my driveshaft.
Have you rotated the tires to see if the vibration moves? Do that before you go chasing anything else. You're moving on to more expensive parts and you haven't completely ruled out the tires yet. Just tryin to save you some money and time bud.
fact! why in the hell are you doing 95?
i think your flux-capacitor is out of calibration, to reset it you will need to drive at 88.8mph for 1.21mi a precicley 10:06pm or at 1:20am
I had a similar issue with my front end. Did the Tundra brake upgrade with OEM rotors, pads & shims, Napa calipers. Problem solved.
If your steering rack isn't leaking, have you researched the steering rack guide replacement? I was very happy with the "less wandering" from my steering after doing so.I've owned my 4Runner for almost 3 yrs and I also had similar shakes and clunks to what you're describing. I've eliminated most of the uncomfortable control issues, but for me, its not a big deal, as I use my 4Runner for towing my trailers and going places the cars can't. It's my vehicle of choice to drive but not my daily driver, as I have a company truck. With this said, in the end, you have to make a decision as to what you're comfortable with. I have a 98' and I accept it is a 16yr old vehicle, and because of this, its a work in progress--- which I'm happy to accept. I paid $7500 and I've put $4000 into it over the nearly 3yrs of ownership, however, that's money I won't have to spend again.
Work I've done wrt to shaking/drivability:
- replaced rack bushing (Wheelers)
This improved the "wandering" significantly
-replaced OTRE's, lower ball joints (inners were ok) and stabilizer end links
This improved steering control and reduced vibration
-replaced tires with Yokohama Geolander HTS
This "smoothed" the ride as these tires have a less aggressive tread but better traction, as my old tires were worn down! This also reduced my high speed vibration somewhat
What I have yet to do:
- NUMBER 1: Tundra brake upgrade! From everyones experiences this is a must if your are offroading or towing. It provided more responsive braking at speed and/or heavy conditions. The rotors are significantly thicker and will not warp. Stock 4Runner rotors are known to warp (as well as most SUVs in this class, from this vintage)
-my shocks and springs seem to be ok at the moment, but I do want to install air bags eventually to help sag when I tow my sportboat
-control arm bushings(front and rear)---- when I had the front apart to do ball joints, the bushings appeared ok but many members have replaced these and noted improvements ie. overall tightness, clunking and ride.
-rack... the last item left which I believe will eliminate any wandering completely-- at the moment its not bad considering the work I've done above. Eventually I will get to it if the wandering becomes worse. (there's a steering column mod I may look into as well)
The bottom line is, even with the minor issues I notice from time to time, it still drives better then most trucks, is comfortable to drive, and also handles very well for a body on frame, compared to say a light SUV, like a Ford Escape, which is a uni-body platform.
I'm enjoying this truck! Its not a chore to work on, its fun to drive and does exactly what I want it to do reliably (unlike my last truck!!) AND it scratches my yen to wrench. This is generally an easy truck to work on! AND simple enough to understand. I've had other trucks but none of them were close to being as durable as a 4Runner.
Sorry if I sound overly harsh but, if I wasn't comfortable with these conditions, I could have gone out and borrowed/bought something for $40K+, to drive and forget, but it wouldn't have been this enjoyable!!
Good luck with your decision!
I've owned my 4Runner for almost 3 yrs and I also had similar shakes and clunks to what you're describing. I've eliminated most of the uncomfortable control issues, but for me, its not a big deal, as I use my 4Runner for towing my trailers and going places the cars can't. It's my vehicle of choice to drive but not my daily driver, as I have a company truck. With this said, in the end, you have to make a decision as to what you're comfortable with. I have a 98' and I accept it is a 16yr old vehicle, and because of this, its a work in progress--- which I'm happy to accept. I paid $7500 and I've put $4000 into it over the nearly 3yrs of ownership, however, that's money I won't have to spend again.
Work I've done wrt to shaking/drivability:
- replaced rack bushing (Wheelers)
This improved the "wandering" significantly
-replaced OTRE's, lower ball joints (inners were ok) and stabilizer end links
This improved steering control and reduced vibration
-replaced tires with Yokohama Geolander HTS
This "smoothed" the ride as these tires have a less aggressive tread but better traction, as my old tires were worn down! This also reduced my high speed vibration somewhat
What I have yet to do:
- NUMBER 1: Tundra brake upgrade! From everyones experiences this is a must if your are offroading or towing. It provided more responsive braking at speed and/or heavy conditions. The rotors are significantly thicker and will not warp. Stock 4Runner rotors are known to warp (as well as most SUVs in this class, from this vintage)
-my shocks and springs seem to be ok at the moment, but I do want to install air bags eventually to help sag when I tow my sportboat
-control arm bushings(front and rear)---- when I had the front apart to do ball joints, the bushings appeared ok but many members have replaced these and noted improvements ie. overall tightness, clunking and ride.
-rack... the last item left which I believe will eliminate any wandering completely-- at the moment its not bad considering the work I've done above. Eventually I will get to it if the wandering becomes worse. (there's a steering column mod I may look into as well)
The bottom line is, even with the minor issues I notice from time to time, it still drives better then most trucks, is comfortable to drive, and also handles very well for a body on frame, compared to say a light SUV, like a Ford Escape, which is a uni-body platform.
I'm enjoying this truck! Its not a chore to work on, its fun to drive and does exactly what I want it to do reliably (unlike my last truck!!) AND it scratches my yen to wrench. This is generally an easy truck to work on! AND simple enough to understand. I've had other trucks but none of them were close to being as durable as a 4Runner.
Sorry if I sound overly harsh but, if I wasn't comfortable with these conditions, I could have gone out and borrowed/bought something for $40K+, to drive and forget, but it wouldn't have been this enjoyable!!
Good luck with your decision!
Odds suggest this is might be warped front rotors, while braking. :dance: Good Luck!
If your steering rack isn't leaking, have you researched the steering rack guide replacement? I was very happy with the "less wandering" from my steering after doing so.
As for the other suggestions, they seem to be focusing on vibrations ONLY while braking. Nobody has yet mentioned an out of balance drive shaft.
As a way to check an out of balance driveshaft, drive at the speed you feel the vibrations. With a manual transmission shift down a gear maintaining the same speed and see if there are changes in vibration. With an automatic transmission just turn off overdrive. This is changing the speed of the driveshaft.
So did you end up doing the front brakes too now? I think earlier in the thread you mentioned you only did rears. You did the fronts now too and it still shakes?
Out of the box thinking here... are you road testing it on the same road everytime? Maybe that road just has bumps in it that show up at those speeds? hah. :doh: My old Silverado was great on highways in central CA, but then when I drove it to Los Angeles, the way they had built their highways had certain ridges in it that cause the length of the vehicle to fall right outside of the ridges and it created this crazy wobble. But it ONLY happened on the freeways down south. Weirdest thing. :tape: