[TundraCDN]

Alright, I'll do my best to explain the problem. I have been reading the forums like crazy and really only read one post that described my problem almost exactly but it wasn't the original topic of that thread so no one really commented on it. I read all of the slip yoke / driveshaft threads and it sounded like that at first but I'm just not exactly sure. So here goes:

2007 Tundra Crewmax 5.7L 4x4 Limited w/ 56,000 Miles

The problem is intermittent and usually happens more often when the weather is warm, or the truck has been running for a while. I've owned the truck for about 8 months and only started noticing this issue in the last month.

When I am coming to a complete stop (soft or hard), at the very end of the stop there is a feeling that something either engages or disengages. Almost as if the breaks are slightly grabbing at the very last second.

When I am moving from a complete stop, I can roll all I want, but the second I put the gas on there is a slight delay. The delay is a half a second at most. It feels as if something there could me some "play" in something. Or something is taking a little bit longer to engage. I feel this mostly in the gas pedal. A passenger can also feel this but it's quite subtle. I wouldn't equate it to a bump as there is no lurching motion.

So some of the things that are different than what I've read in the driveshaft problems are as follows;
-The sound isn't audible. I can't hear a clunk or any noise. Its more a feeling and quite subtle, some may not notice it unless I pointed it out.
-The problem happens exactly as I come to a complete stop and exactly when I put the gas on. As in there is no delay.
-It never feels strong enough like I've been tapped in the back by another car but could feel like there is something sliding in the bed.
-I haven't noticed any issues with respect to downshifting from 5th to 4th as others have mentioned.

Well peeps... love to hear your ideas. Thanks in advance.

 

[TacoBlack]

is the truck stock?if not what was added?

 

[TundraCDN]

The Tundra was stock except for the 20" Fuel Rims and oversized Toyo tires 275/65/20 when I got it. I added the 2.4" Readylift to the front to level the truck out. I didn't put any spacers in the back.

 

[alalmcgrath]

The Tundra was stock except for the 20" Fuel Rims and oversized Toyo tires 275/65/20 when I got it. I added the 2.4" Readylift to the front to level the truck out. I didn't put any spacers in the back.

Sounds to me exactly like the infamous driveline "CLUNK". Try searching for driveline clunk or driveshaft clunk. There are plenty of threads on this.

 

[TundraCDN]

Yeah it could very well be that. I have looked through all of the threads regarding the driveline clunk. Some symptoms match, some don't. Perhaps mine is JUST starting out and it's really minimal right now which is why it isn't very noticeable. I'll monitor it for a little bit and see what happens. If it persists I'll grease the slip yoke and see if that takes care of the issue. The problem is so minor right now that I was thinking it could be something else. Anyone else have input?

 

[15whtrd]

Get under there and wiggle the driveshaft around. You may have to let your wife get in the truck while you peek underneath and she gives it a little gas. Or mount a GoPro underneath if you have one. If you don't trust your wife LOL

 

[OldGuy43]

My brand new 2017 SR5 DC does that...no clunk, just a delay in power being applied to the driveline resulting in a slight sudden increase in engine RPM that's quickly knocked back down to normal when some drive line component suddenly engages and the truck gently lurches forward. I think it's the automatic transmission being lazy, and delays the shift to 1st gear until you seem to be fully determined to start forward again. Either that, or as someone suggested on an earlier related thread, it's the torque converter being unclear about when to be locked versus unlocked.

 

[TundraCDN]

OldGuy43 - I also thought this. It does make sense as far as the disengaged/engaged feeling that I'm getting just at the truck comes to a complete stop and again when I press the gas slightly. Do you notice yours doing that intermittently or does it happen to you all the time?

15whtrd - I went under the truck the other day and took a look. There wasn't any apparent issues. The truck is really clean for an 07 with only 56k miles on it. What exactly is it that I should be looking for when under there and my wife on the gas? Basically lay under there to see if she can move forward a bit to isolate the feeling that I'm getting?

 

[15whtrd]

15whtrd - I went under the truck the other day and took a look. There wasn't any apparent issues. The truck is really clean for an 07 with only 56k miles on it. What exactly is it that I should be looking for when under there and my wife on the gas? Basically lay under there to see if she can move forward a bit to isolate the feeling that I'm getting?[/QUOTE]

What I'm saying is grab the driveshaft and twisted side to side to see if there's any play. And do not get underneath it when someone is moving it forward and backward for you just look at it from the side. Watch the driveline and see what the hell it's doing. See if it does it when your foot is on the brake when you give it gas.

 

[OldGuy43]

Yes, intermittently, or more accurately, I would actually say infrequently. Now that I know that it can happen, I am no longer surprised when it does happen. Try easing into the throttle a little more gently and see if that helps. That seemed to pretty much eliminate it for me.

It's annoying, but I anticipate that taking it to the dealer under warranty would yield no good results. It's probably a minor transmission control issue, and we know the Toyota solution to transmission problems.

 

[Jarvis243]

My brand new 2017 SR5 DC does that...no clunk, just a delay in power being applied to the driveline resulting in a slight sudden increase in engine RPM that's quickly knocked back down to normal when some drive line component suddenly engages and the truck gently lurches forward. I think it's the automatic transmission being lazy, and delays the shift to 1st gear until you seem to be fully determined to start forward again. Either that, or as someone suggested on an earlier related thread, it's the torque converter being unclear about when to be locked versus unlocked.

My 2011 DC does this. Almost like you were getting a little crazy with skinny peddle for a moment. I have had this happen with other vehicles and just chalked it up to being the tranny trying to catch up to the rest of the drive train.

Sent from my VS986 using Tapatalk

 

[jchilds91]

I have an 07 TRD and am having basically the exact same issue as yourself. To me the best way to describe the feeling is as if the wheels stop turning but the whole truck shifts forward. Like yourself I can't hear the clunk, but i can defiantely feel it. It seems as if mine is getting progressively worse. It doesn't happen at every stop and start but it is getting more frequent. If I'm stopped at a red light and take my foot off the brake, it will sometimes even do the "clunk" then.

I am the second owner of this truck so I do not know the full history of the truck, but I believe the rear driveshaft had been replaced at some point. The front driveshaft is clearly a steel one as it is coated in light rust. The one in the rear going to the rear diff appears to be aluminum or some similar alloy.

When I take my truck out of park and put it into reverse or drive, or drive to reverse, lots of times it shifts with a clunk and a shudder that you can hear and feel as it lurches the truck against the brakes. I'm wondering if bad u-joints would cause all of our symptoms? From my understanding, hard shifts betweens gears(park to drive or reverse in whatever order) is a symptom of a bad u-joint. Anybody else think this could also cause the "clunk" symptom we are all experiencing?