Transmittion noise 2017
 

My friends 2017 86 transmission noise happens at or above 3k rpm and gets louder as rpm increase. Vibration is felt in shifter and increases as rpms increase. Also at low speed 2-8mph a very geary sound comes from transmittion. Any suggestions on what it could be? He said when he took it in to toyota they could not find the cause and even looked at the bushings but did not find anything wrong. I did tell him to take it to another dealership. But figured I would reach out here first. I must admit I thought it was him until I drove it and felt and heard it my self. I’m stumped the car has 7k miles and is stock.

Please help thanks all!

I posted his vid below
https://m.youtube.com/watch?feature=...&v=gYXFZHBVCLM

Calling on @Ultramaroon ....... we have situation here ....... need help!

DANG, I just don't know. I don't think the shifter is supposed to move around that much.

You say the car is stock, but has it been fitted with a short shifter (maybe by the dealer) ..??

So, if you have an 86 and you drove it ...... that would eliminate pilot error.

I reckon someone has checked to make sure the transmission is full of oil..??

I'm guessing something in the linkage is lose ...... :iono:


humfrz

Yes it completely stock no short shifter no mods noda. I did notice that I could also feel almost an what felt like an rotating lopsided feeling from the shifter. It had to be coming some where my guess from flywheel to transmission. He drive my car and then we road in his and then I drove so it is not driver. Only people that have touched the car is dealer. I even took off the shift knob and it was still there. Clutch felt normal he said it started one day and has gotten progressively louder so much radio or window dose not even help being open. Dealer is saying nothing wrong he told me that they put felt in shifter because it was the knob but that was bs and I proved it by removing it lol. That’s why I’m really stumped. Has any one come in to this long term more than 50k miles.

Well I would have imagine that dealer would check the level of fluid but I don’t put it past them if they did not. With only 7 k miles there should be no reason not to have fluid no obvious signs of leak or what not. Car shifts fine gose fine in all gears just viberates like a forcefully rattles and is loud. I never saw anything like it before.

hmmm.......you might check to see if the transmission is bolted down tight.

@Ultramaroon will be along soon ...... he's our transmission aberration specialist .......:thumbsup:


humfrz

Sweet I’m sure he should know.

I'm sorry. Listened to the clip. No idea.

Does it correspond to engine speed, or vehicle speed? I know you said 3K but is that 3K in any gear?

If you take it up to the speed where it vibrates, push in the clutch and coast, what happens?

Can it be felt in the seat?

Clutch pedal?

NVM the low speed rumble for now. Probably nothing.

I'll summon up @Tcoat for you ....... there is an outside chance that even a relatively new TOB could be going bad and make the clutch/transmission unit wobble the shift lever, plus make noise .......:iono:


humfrz

Is the exhaust completely stock? Know it may seem weird but a leak or loose section could create vibration and noise though the tranny case and shifter. The symptoms all fit. Most certainly not a TOB issue.

It can not be felt in the seats and no problems with clutch. It can be felt and heard at any speed and any gear above the 3k. When you get higher in both engine and driving speed it gets louder and vibrates more. I did notice that even when the car is in neutral and you rev it it will vibrate and make noise but when it is in gear and moving it is much worse. The standard feed back in the shifter is more even when in neutral.

The geary noise is like rrrr when driving at low speed and if you have your finger resting on the shifter and put a little pressure forward on the shifter when driving at low speed not only do you hear the geary noise but you can actually feel a push back in the shifter while moving almost like some thing is off center when traveling around in a circle. It actually comes around like the flywheel has an added weight on a section of it this is the only way I can discribe it.

Car is 100% stock everything. I asked him when he took it in to the dealer to have them check the bushings and to make sure everything is tight even the hangers for the exhaust and by the transmission. Once again I have to take what they say. He has had it in like 5 different times. That is why I’m thinking change the dealer. I did check under the car my self and everything seems tight although it was on a ramp not lift.

It sounds like something happened to throw off the balance of the rotating assembly but that's a long shot.

Maybe a blown engine mount?

Vibration with clutch disengaged eliminates everything from the transmission input shaft and rearward.

On trip 4 I had him ask to check the engine mounts to make sure they are tight. I though it could be loose.

When I had in in Neutal and reved it it would make the noise but definitely not as loud, my foot was off the clutch. I then put my foot on the clutch and engaged it, in neutral vibrates and noise when reved but the same level. But when moving it really gets loud and feed back gets to the level in the video.

Yes, looong shots but maybe:

* the flywheel is out of balance

* the pressure plate is out of balance

* the clutch disk is out of balance

Question, when his engine is revved up (car standing still) does the engine in his car feel "rougher" than the engine in your car ..??

Has he ever "dropped the clutch hard" .. ??


Who else has a theory ...... :iono:


humfrz