Vibration pain in butt

Need help. 2007 prerunner. 4.0. Automatic. I have a vibration when under load at highway speeds. When you let off gas it goes away. I had tires balanced, new ujoints,new carrier bearing good drivelineshop rebalanced shaft. No change. More I think about it after I changed plugs is when I noticed vibration. Has anyone run across something like this. Has around 130,000 miles, it had about 116,000 miles on what I think was original plugs because one side had ngk other denso. I bought it with 87,000 miles and I'm second owner. Thanks for your help. I'm puzzled. PS motor mounts and trans mount all good.

 

What is with people creating titles these days...

 

Besides that, I've had tons of different vibrations from my 07 as well. Are you using iridium plugs?

 

Just asking for help not criticism.

 

Wasn't criticizing, its just these titles keep getting worse. I hope you saw my second post.

 

Do you have any kind of lift or are you at stock ride height?

 

Not using iridium.

 

Factory stock all the way

 

Have you had an injector cleaning recently? Or transmission flush, sometimes I have the same vibration due to my aging torque converter.

 

Had trans fluid changed after a shudder appeared, doing that made shudder go away. Might need it again, changed it around 112,000

 

Have not had injector cleaning.

 

Hmm.. are you sure you're putting the vibrator in the right hole?

 

What an odd picture to have accessed so quickly

 

I would hold off on the fluid flush for maybe another 20k miles, usually you do one at 100K and then every 50k from there so 150k, 200k etc. I would though look into having injectors cleaned or maybe just run a bottle of seafoam through the truck. I'm about to do a seafoam test to see if some of the harshness I experience while accelerating goes away. Might be worth a try before you go in for something big.

 

Damn I have had replaced a certain bearing on my Tacoma twice but I don't remember what it's called

It's shaped like a cross or + and has sphere shaped bearings on each of the tips. Can't find pics but maybe this is your problem? My truck would vibrate like crazy when I pressed the gas and then stop vibrating when I let go of the gas. Replaced the part and the vibrating went away.

 

Try cleaning your Mass Air Flow Sensor and also remove and clean your throttle body. Pick up a can of MAF cleaner and give it a good spray down. Do not touch the tiny wires up in the sensor. Just spray with cleaner and let air dry. Also clean your throttle body real good. Surprising how dirty they get on the engine side. You have to remove throttle body somewhat to clean the engine side. A tooth brush and a throttle body spray cleaner work great to clean off all that crud. After you reassemble everything and start up the truck, the RPMs might be a bit higher then normal. It takes about 15-20 mins of driving for the RPMs to adjust and go back to normal. 40 or so miles for the ecu to reset.

On another note, how's your front wheel bearings? Mine are starting to hum and vibrate highway speeds but when I let off the gas and put on the brakes a little the hum/vibration goes away.

 

^^^ u joint

 

does it change or vary with Rpm? I have something similar that seems worse at 2k rpms that I haven't figured anything out about. Driving me nuts

 

Vibration is there all the way up to cruising speed goes away when you let off gas pedal.

 

If there is no change or variance in the way it feels or sounds in relation to engine rpms... and doesn't change when it shifts gears.. I would look more at the driveline and U joints and such. Also, try putting it in 4H and see if its still there.