Question about thump when at a stop and let off the brakes.

Yep, normal. Both my previous 3rd gen and my current 4th gen do it. I don't recall my 2nd gen doing it but that was a manual. All 4WD's.
 
Wiggle under the Runner with the hose end of your grease gun. Have your SO (or someone else) operate the gun as you lube each of the six zerks on the U-joints and the Slip-Yolk. Did mine over a year ago and have NOT had the thump again.

Good Luck
 
03 4WD V8 Limited I get the thump every once in awhile but really never thought much about it till reading this post.

Thanks to all for talking about anything and everything 4Runner.
:smashputer:
 
My friend has an older Tacoma (99?), and it does the same thing. I'm pretty sure this is just something Toyota trucks do. Hell, my friend's '06 Tundra does it too. Maybe lubing the zerk points will help, but it doesn't bother me near enough to go buy a grease gun and spend the time doing that.
 
I have the same problem too... 07 V8 4x4. The difference i see in mine is it will even do it if i stop slow. Ive accepted it as the nature of the beast. There was a thread where someone said after a lift the problem went away but i dont remember what the topic was.

With that said im otherwise happy with the suv so i guess its a small price to pay so longas it doesnt cause any real issues.
 
I have experienced this in my 05 sport since I purchased it!! I have taken it to the dealer to "fix" this problem and they have told me multiple times that the computer does not register a problem... About 2 weeks ago I had a 3" OME lift installed and so far I have not experienced this problem. I am hoping that this fixed it.. I'll report back in a few weeks and let everyone know if this worked for me ...
 
I am the original owner of a 03 4WD V6 Sports Edition. I get the thump every time I brake hard only. If I brake normally, no thump. I really never thought much about it till reading this post, but it did not cause any problems so far.
 
i was under the impression that this could be due to our 4runner having the roll back control, the one that doesn't let our trucks roll back on an incline. even though it is on a level surface i thought our brakes would also catch the truck and we would feel the thump when we start to roll. have you noticed you only get the thump once when you stop and start to roll.
my first post so be nice.
 
Roll back has been a big issue for me. In my 98 explorer i could sit there and not even touch the brake but in the 4runner i have to keep one foot on the brake and the other on the gas to start moving. Otherwise ill start rolling back on a incline. Oh and the 4runner doesnt like it if you hit the gas once you start rolling.
 
As most people here knows this thump is particular to 4Runners… but I just want to share that after installing customized DS lift “thump” in my case was 99% eliminate. Now I can only feel it after very hard braking: almost an emergency stop.
I just want to share.
 
Thump/Clunk still there after installing new drive shaft

bought a used 2008 V8 4Runner 2 years ago and experienced the thumping/clunking issue around 1 month after purchase. The thumping would occur when coming to a stop, when accelerating from stop and when accelerating moderately or hard from ~20 mph.

My mechanic would grease the driveshaft during every oil change which would address the issue for ~500 miles. After reading many posts in this forum, I was confident that replacing the drive shaft would resolve the issue. My mechanic is very knowledgeable about Toyotas but even he was not certain that replacing the drive shaft would solve the problem.

One week after installing the new Toyota drive shaft, (not the Lexus part), I was happy to report that the thumping had gone away, or at least I thought so. While driving to work one morning, I accelerated moderately hard from ~20 mph and felt the thump/clunk again. I went reported the issue to my mechanic and went back to have him tighten the U joint bolts. I also learned that he replaced only the rear drive shaft. I asked if he should have replaced the front drive shaft as well and he responded by saying that he did not think that the front drive shaft had anything to do with the thump/clunk issue.

It has been more than 2 months since I replaced the rear drive shaft but given my state implemented stay at home orders in mid-March, I have driven my car ~300 miles with the new drive shaft. There is no issue when coming to a stop or accelerating from a stop but the issue did present itself again 3 days ago when I accelerated moderately hard from ~20mph.

My mechanic believes that there is some other issue with my transmission, perhaps with the differential. He has found a significant amount of rust (also know issue with this generation 4Runner) which we have covered with 3M rubber coating twice since I bought the vehicle.

I wanted to reach out to this forum and ask if anyone might know what is causing the thump/clunk when accelerating from ~20 mph. Is this a front drive shaft issue, differential or something else in the transmission?

I use my 4Runner as my daily driver and to trailer my race car to the track. I have installed an auxiliary transmission cooler, replaced the timing belt and done a full tune up since purchase. The truck runs beautifully, except for this one annoying issue. I want to address this issue given that I tow a heavy load (race car plus equipment and tools = ~6,000 pounds) 7-10 times per year, sometimes several hundred miles and over significant grades.

Any advice/suggestions would be greatly appreciated.
 

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