2007 Prerunner Hard Braking - Transmission Slams?

Hi all, I have a 2007 PreRunner, and I noticed recently that if I have to brake hard to come to a hard stop, a few seconds after stopping I feel a very hard impact coming from the drivetrain, such that it seriously feels like I got rear-ended. I never felt this in the first 9 years of owning it, I assume it's the transmission downshifting into 1st gear incorrectly. Any experience with this, recommendations, expected repair cost? Thanks...

 

axle wrap or you trans fluid could be low. mine used to do it till I got rid of the junk stock leaf springs

 

If transmission fluid is low, what other impacts would I notice? Seems to drive normally in all other ways, and I haven't noticed any leaks in the garage.

 

it's most likely just axle wrap from worn out leaf springs.if you have stock leaves then it's time to think about replacing them

 

check your trans fluid....

 

Thanks -- transmission fluid was flushed and replaced 1 year ago, but I'm having the leaf springs replaced (under recall) Monday, hope that's the fix ...

 

Leaf springs replaced, unfortunately the phenomenon persists. I actually don't need to come to a full stop to experience it, if I decelerate hard to a few mph and then immediate try to accelerate I can feel it, though not as severely.

 

I had a recall on my leaf springs. I used to feel a bump after I would hard brake. Felt like some hit your back bumper

 

Hey OP, I had bought a 2008 Prerunner and had a similar issue. Upon hard braking at times and coming to a stop my truck would jump forward, I'm not talking about light lurch it was pretty harsh, at times i felt like it would lurch into the back of someone. I knew that wasnt the axle wrap issue, took it to toyota and the guy tried to tell me it was a driveline which i knew was way off. I left and had the same issues, eventually it threw a code and i had it pulled. Code was for a shift solenoid issue. took it to toyota and told the same guy the problem and they verified it , under warranty i ended up getting a brand new transmission. I'm not saying its going to cost you a transmission but definitely be eyes open to more than just axle wrap!

 

Take your driveshaft apart and grease the slip yoke. They really need a grease zerk there.

 

2nd Gen Tacoma Slip Yoke Grease Fitting

 

Mine used to do the thud after a stop, greasing the slip yoke has taken care of it. One of these days I'm gonna either add a jerk or maybe do a tom woods 1 piece driveshaft.