Lewis&Clark
New member
I bought my '08 T4R last year. I did buy it from Toyota, and I plunked down a couple grand to get the longest Toyota bumper to bumper warranty I could get. It's covered for about another 10k miles, until around 93k.
I brought it in recently because I've been experiencing something weird for the last few months. When the engine is hot and the car comes to a stop, there's a very noticeable "thunk" after a brief delay. Stops -- about 2 seconds -- and then this "thunk". I know that's a highly unscientific way of explaining it, but I don't know how else to describe it. It feels like something dropping/coming into place -- feels like, because it isn't a loud noise per se, though you can definitely hear it happen.
I thought for a while it might be a hard shift from 2nd to 1st as the car comes to a total stop, as the Toyota service advisor told me the transmission won't necessarily always go down into first until after the car stops. But the couple second delay I wasn't sure about.
They spent a couple hours driving it around trying to replicate it. I was able to get them to do that, though the "thunk" was far more mild than I usually experience. But at least they recognized it and it's on the warranty service record now in case this problem continues.
Their initial thought was the hard shift too, but they ruled against that because it seems to only happen when the engine is hot, and because well, it just felt like were looking for every reason they could find to not conclude it's an expensive warranty job. They may well be right -- I'm no mechanic and I have a moderate amount of trust for these guys.
The questions for me come up with what their conclusion actually was: that the driveshaft was nearly completely dry in that lacked any grease/lube. Now I'm not the least bit mechanically inclined--my long learning curve for mod'ing my car is starting out with simple LED bulbs, a few drilled holes, etc. Vehicle mechanics are not my thing.
So my question is -- does their conclusion sound reasonable to y'all? Any other potential causes of this "thunk" that you can think of?
I asked how the driveshaft could come to be dry and in need of greasing to begin with, and the service advisor simply said that "well, the grease chips away as the car drives over time and gets thrown off the driveshaft when on rough roads".
It was a pretty thin explanation and seemed like a half-hearted solution. To be fair, they greased it up, and the problem hasn't occurred since then -- about 3 days ago. I'm keeping an eye on it.
It was covered under warranty, as was the strut replacements I needed for the tailgate, so I have no complaints. Just don't want to have to keep going back if the problem persists. And I'd like to understand in more detail how/why the driveshaft might "run out" of grease/lube.
dt
I brought it in recently because I've been experiencing something weird for the last few months. When the engine is hot and the car comes to a stop, there's a very noticeable "thunk" after a brief delay. Stops -- about 2 seconds -- and then this "thunk". I know that's a highly unscientific way of explaining it, but I don't know how else to describe it. It feels like something dropping/coming into place -- feels like, because it isn't a loud noise per se, though you can definitely hear it happen.
I thought for a while it might be a hard shift from 2nd to 1st as the car comes to a total stop, as the Toyota service advisor told me the transmission won't necessarily always go down into first until after the car stops. But the couple second delay I wasn't sure about.
They spent a couple hours driving it around trying to replicate it. I was able to get them to do that, though the "thunk" was far more mild than I usually experience. But at least they recognized it and it's on the warranty service record now in case this problem continues.
Their initial thought was the hard shift too, but they ruled against that because it seems to only happen when the engine is hot, and because well, it just felt like were looking for every reason they could find to not conclude it's an expensive warranty job. They may well be right -- I'm no mechanic and I have a moderate amount of trust for these guys.
The questions for me come up with what their conclusion actually was: that the driveshaft was nearly completely dry in that lacked any grease/lube. Now I'm not the least bit mechanically inclined--my long learning curve for mod'ing my car is starting out with simple LED bulbs, a few drilled holes, etc. Vehicle mechanics are not my thing.
So my question is -- does their conclusion sound reasonable to y'all? Any other potential causes of this "thunk" that you can think of?
I asked how the driveshaft could come to be dry and in need of greasing to begin with, and the service advisor simply said that "well, the grease chips away as the car drives over time and gets thrown off the driveshaft when on rough roads".
It was a pretty thin explanation and seemed like a half-hearted solution. To be fair, they greased it up, and the problem hasn't occurred since then -- about 3 days ago. I'm keeping an eye on it.
It was covered under warranty, as was the strut replacements I needed for the tailgate, so I have no complaints. Just don't want to have to keep going back if the problem persists. And I'd like to understand in more detail how/why the driveshaft might "run out" of grease/lube.
dt
