Is this what you call "axle wrap?"

Yeah I know. Sometimes sarcasm is hard to convey on a message board.

While we're on the topic, you say that an AAL will help or eliminate the problem. Would there be any advantage / disadvantage to getting an AAL versus waiting for the 09's to be included in the rear leaf spring tsb? If an AAL will fix my problem, and there is no advantage to the tsb, I'd rather just go ahead and spend the money and get it taken care of.

 

Axle wrap is not a well-defined term, but I mean a change in diff pinion angle when transmitting a lot of torque to a leaf spring rear end. It can cause vibes and whining noises. I guess it can make a clunk or a banging noise if severe enough.

But he is talking about a noise when coming to a dead stop in a new, unlifted truck. The spline binds a bit then slides free when the load is reversed. Like I said, well known. Even YOU say the spline yoke needs greasing in another thread.

Does your PreRunner do it? Mine doesn't and I flog the crap out of it.

 

I am confused. More than usual. Your profile says PreRunner and your sig says 4x4.

I have a PreRunner. No driveshaft spline = no clunks stopping or starting. Ever.

DC's don't come with manuals.

And then it BANGS back up when you start again? We would be eating differentials.

I might buy your scenario if we are talking about VERY hard stops, not tooling around. Think about it: we have deceleration assist. The torque on the driveshaft is reversed a couple of seconds after you let off the gas in a slow stop, the axle will definitely unwrap. But the truck can still clunk when you come to a stop.

Sorry, but researched the hell out of this when I bought the truck. Find a PreRunner reporting the problem. I searched for days and every complaint was 4WD and a lot of owners traced it to the spline yoke.

I agree there are overlapping complaints with the folks who lift and have pillow block and pinion angle problems, plus the term axle wrap is frequently used to describe just about any rear end problem.

But what the OP describes is not axle wrap (as defined above).

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so axle wrap isnt neccesarily a prob, and i should be getting the TSB done on my truck soon will this stop it from happening?

 

no, i have a deaver 10 leaf pack and it still does it, it is normal, i try to take it easy when comming to a stop as it bugs the hell out of me.

 

thanks for the info, as long as it wont hurt anything im pretty ok with it and i find myself coming to stops quickly alot, use to an integra with oversized brakes

 

I've noticed that clunk feeling/noise on my '09. It's nothing too bad though. I've wondered if this is the "Unintended Acceleration" problem that people were trying to sue Toyota over.

http://www.tacomaworld.com/forum/2nd-gen-tacomas/35868-tacoma-named-dangerous-truck.html

 

Nothing to do with unintended acceleration, as least not the problem I'm experiencing.

Also, as I mentioned previously, the frequency with which it occurs and the severity are not consistent at all. I can bring the truck to a stop as gently as possible, and I'll still experience it sometimes. Conversely, I can bring it to an abrupt stop, and it may not happen at all.

I'm no mechanic by any means, so what I'm about to say may not make sense technically, but it's as though there is slop / spacing in the gears. When the truck stops it feels like the transmission continues to turn just a bit until it strikes the gear in the differential, producing a clunk. Then it backs off, so when I press on the gas there is space in the gears again and they strike, producing another clunk. Sometimes I'll even feel it after releasing the brake, before pushing the gas pedal. Like I said, I'm sure this isn't technically correct, but it is the best way I can describe it.

Additionally, I've never heard any noise associated with it at all, if that matters.

 

I probably shouldn't be replying to threads when ought to be sleeping. Gotta love the graveyard shift I didn't mean to say that it is unintended acceleration, just that some drivers might mistake it for such.

 

make sure it doesnt happen again chris.

but for real great info

 

Sorry, been out of town the last couple of days...

I crawled under the truck tonight. There doesn't seem to be any play in the driveshaft. However, looking at the u joints, the rearmost one has thrown oil all over, while the other two have thrown grease. I assume these get serviced, either from the factory or from the 5,000 mile service my truck was in for last week, and throw the excess? Why do the front two have grease, while the rear one looks and feels more like oil? Would this be indicative of anything?

TacoTurd, you indicate you have done a fair share of research on the subject. Is this spline joint problem that you speak of just something that I will have to learn to live with, or is there a some kind of cure? You mentioned disassembling it and lubing it, though that may not fix it?

 

Great, I have this to. Im not sure about taking that apart. How much do you think a shop would charge to do this?

 

I have the "lurch" while stopped and an occassional "clunk" when tooling around. First thing I'm going to do is et under there and make sure everything's tight.
I gotta get that AAL. I have blocks with the weak factory springs and there's many points in this thread that makes perfect sense to me.....

Good info!

 

So I've complained about this problem twice now to the dealer, and both times they were unable to duplicate it. On the second time, I took a mechanic for a ride. It only did it twice, but since the mechanic didn't know exactly what to expect, he claimed he didn't notice.

I'm feeling it up to three times on nearly every stop that I make... once when the truck comes to a stop, sometimes when I release the brakes, and again when I push on the gas. I love this truck otherwise, but I have to admit that after plunking down nearly $30k, every time I stop I feel that it is junk. I'd really like to get it fixed so I can enjoy the truck, and not get pissed off every time I drive it.

Even though I listed the problem in detail for the dealer, and even provided the fix for them (thanks to this site), they say they cannot attempt to fix anything without personally experiencing it first. I am tempted to take it to a local shop and just pay for them to do it. Any idea as to what this might cost? Could this possibly open a can of worms if, say, the problem comes back (or wasn't fixed in the first place), and the dealer somehow finds out that the problem was addressed by an independent shop? Could they deny warranty coverage at that point, claiming the other shop messed something up?

 

I had TSB done & it still dose it. The dealer says its normal in tacomas, he said its axel rap & no way to fix it. Between that and surging when stoped, it seems to happen more when a/c on. Ive gotten use to it, I still love my taco.