Tacoma pro rough ride around 40mph

[TacoFreak]

Yeah @Ray T It really could be a new problem with the transmission. I am in the transmission TSB VIN range and my truck does not do that, but it sounds like more than a few do.

It seems like another first year issue that Toyota needs to figure out. I am also a long time Toyota owner and I trust them to sort this out eventually.

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[radbrad]

So glad it's not just me. I know exactly what you're experiencing. I don't think it's really about speed. But it won't shift into a high enough gear below that sleed I guess. The truck will be in a high gear at around 1250 rpm and while giving it gas it will try to hold that gear as much as possible and you can notice the truck will use all battery and turbo to give enough power and hold that gear. I think it was designed like this because people hated the gear hunting in the 3rd gen.

But definitely a certain range in the gearing where is shakes/ stumbles. Pretty darn noticeable and annoying.

 

[TacoFreak]

@radbrad I was also thinking it might be shift related rather than vehicle speed. My transmission sometimes makes a rumble noise/vibration when downshifting, particularly in lower gears. This could be a similar thing when it shifts into higher gears in your truck. Mine does not do it all the time, but other trucks have bad shifts almost every time they shift in/out of 1st and 2nd gears. Mine mostly shifts into reverse just fine, but sometimes it shifts so hard it feels like you ran over something.

I think all these symptoms are caused by damaged shift solenoids, which have not failed, but don't work correctly.

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