Strong vibrations/rumble at 1600 rpm

H

h&t

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My 2011 4Runner (120K km) is vibrating during acceleration at around 1600 rpm at around 40 km/h (25/ mph) speed, also at around the same 1600 rpm at around 60 km/h (40 mph), but may be less.

I think the vibrations are stronger going uphill.

The vibrations are strong, it feels like driving over a washboard gravel road.

There's nothing at idle, nothing revving the engine in neutral, nothing at higher speeds or higher rpms.

It's present both in rear wheel drive and in 4x4, perhaps a bit less in the latter.


Any ideas?

thanks
 
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You don't mention what transmission you have (auto/manual) but I had a torque converter on a ZF 6HP26 Transmission (auto box) and it behaved like you described. It literally felt like I was driving over a washboard road.

From a Google search:

If the lockup clutch inside the torque converter is starting to malfunction, you may experience shuddering at around 30-45 mph. The sensation is very noticeable and typically feels like you’re driving over a rough road with many small bumps.
 
Thanks guys for the input so far.
It's an auto tranny, I don't think they make this gen 4runner with manuals,
they don't sell them in Canada for sure.
 
From what you described, sounds like the transmission or the drive line. I would start by checking all your u-joints. Then it is on to the trans which is always spooky in terms of cost...
 
I read that thread, all 17 pages, sounds like it's
torque converter trying to lock (whatever it means)
the problem can be temporarily eliminated by using "4" position of the shifter, instead of D, because the TC is not trying to lock in 4.
Driving in city should be OK in 4, on highway I can switch to D (to save gas in 5-th gear)

The problem was solved in a lot of cases by draining or flushing ATF and adding
Shudder Fixx additive. Perhaps just the additive would fix it....

Some got TC or transmission replaced.

I will have my mechanic inspect the drivetrain and look into flushing.

I guess I'd have someone add the Fixx with a hose and pump under the car, as they don't have the dipstick and filler on top anymore.

I'll update the thread with the resolution.
I miss my 96 3-d gen :( that thing was a ROCK.
 
I am having the exact same issue with my 2011 4Runner. Going to a different dealership tomorrow for a 2nd opinion. Wasn’t impressed with the first dealership. 1st visit they told me nothing was wrong and to bring it back if the truck does it again. 2 days later took the truck back and they tell me it’s the transmission and will be $4-5,000. From everything I’ve researched I think it’s the torque converter and so does my dad that’s worked on everything all his life. He wants me to ask them to change the transmission fluid (not flush), take off the pan and inspect the magnetic strips on the bottom of the pan for debris and clean them and when refilling the fluid to add an additive. There’s a couple of guys that work with him that have the exact same issues with their Toyotas and as long as they change the fluid every 20-30,000 miles they’ve had no more issues. Fingers crossed!!!! I will update tomorrow.
 
It was 60+ where I live yesterday. So in the past week we’ve had temps ranging from 19-60F. My truck does it no matter the temp, but now that you mention that, it did seem worse and it was worse when the temp was super low.
 
Toyota dealership this morning said it definitely is the torque converter. Gave me an estimate of $2000. $1053.91 for t.c. 56.70 for fluid and $890 for labor. Charged me $115 to drive and diagnose. I’ll be getting my uncle to replace it for less than half of the estimate.
 
TC in Canada is CAD$600
and 8 hours of labour at $130!!!
and they said alignment will be needed.

I saw aftermarket TC for around 150.

but I'd try Shudder Fixx first.
 
Tyranixisbell said:
It was 60+ where I live yesterday. So in the past week we’ve had temps ranging from 19-60F. My truck does it no matter the temp, but now that you mention that, it did seem worse and it was worse when the temp was super low.
Click to expand...

You really should ‘t have to change the trans fluid in these trucks thus the closed system. Perhaps my issue is different and it hasn’t happened the past two days given the temps went way above 40deg. It will surely start again this week but I’m happy to not consider it a problem but just something I have to live with. But when it happens when temps are in the teens, it’s EXTREMELY obvious and loud for at least 30 minutes until whatever is underneath is warmed up. My wife won’t even drive it because of it no matter how I explain it, but honestly no modern vehicle should be doing it. It’s very loud and the vibration can be felt by everyone in the vehicle so I clearly feels like something is very wrong.




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Last edited:
I'm still having the same issue but it's gotten worst. I had the dealership replace my torque converter for free under warranty this past Friday . I have 2015 4runner with 52,000 miles. I'm giving them a call Monday to do another diagnostic test. It's a shudder for sure from 1st to 2nd and my truck jerks forward when it engages . I'm having the same issues like when I had a nissan rogue with a cvt transmission issue. They gave me a new tacoma to use and that doesnt drive smoothly either .
 
hikenbike said:
Yes. Completely.


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Click to expand...

If it's still under warranty, show them the TSB. They'll replace a drivers side carrier bearing and potentially the whole front diff. Another option is replacing the carrier bearing with one from ECGS if no longer under warranty.

The problem itself won't cause any catastrophic failure but will be annoying and eventually chew up your cv axle way down the line.
 
Gt4r said:
If it's still under warranty, show them the TSB. They'll replace a drivers side carrier bearing and potentially the whole front diff. Another option is replacing the carrier bearing with one from ECGS if no longer under warranty.

The problem itself won't cause any catastrophic failure but will be annoying and eventually chew up your cv axle way down the line.
Click to expand...

This in new info for me, could you elaborate?
What TSB?
What do you mean "chew up your cv axle way down the line"?
 
h&t said:
This in new info for me, could you elaborate?
What TSB?
What do you mean "chew up your cv axle way down the line"?
Click to expand...

T-SB-0026-15

The differential is designed with fairly loose tolerances resulting in excessive play in the driver's side carrier bearing. This is where the cv axle meets the differential. There is a needle bearing that isn't sized properly for the amount of play in the differential. The bearing wears out fairly quickly and can cause wear on the cv axle over time. The rumbling and vibration usually comes up after lifting when the load on the cv axle changes.
 
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