2020 TRD PRO 6MT Nose Dive while braking, e-brake issue, clutch

Hi Everyone,

This is weird to me but maybe it is normal for Tacos? I still LOVE my Tacoma, btw.

When I brake, the truck nose dives a little. It is hard to modulate my brake pedal (you know how you let off the brake to make a smooth stop?) and I am driving like it is my first day lol. It seems that only the front brakes are working (isn't there a force distribution unit that takes care of which line to put what pressure in? Is there any kind of active leveling system for the rear that may be faulting?).

Another thing is the e-brake. It simply locks the rear wheels. If I were traveling real slow, like 1-2mph, and SLOWLY lift up on the parking brake lever, the wheels just suddenly lock. There is no in-between state, only binary operation it seems.

Additionally, does anyone else's clutch pedal feel, I don't know, mushy? And it doesn't return too well in the cold? It feels weird to me.


any thoughts are appreciated

 

i think all you need here is the ADM, for certain: https://www.tacomaworld.com/threads/mt-accumulator-delete-mod-adm-and-bs-thread.568303/. and yeah it's typically slow for the pedal to return to the top when cold, but it will warm up readily as you drive.

the brake balance will smooth out some as the brakes age, not sure if that will be enough for you. rear drums on a light truck with nothing in the rear will do as you described. consider putting some weight in the rear, but really just use the e-brake when stopped.

 

All sounds normal to me, lol.

Nose dive -- it's a relatively "long travel" suspension system...it would be weird if it didn't dip under heavy braking.
E-brake -- mine is the same way. I never use it while moving. It's a parking brake first and foremost and then a literal emergency brake otherwise. As in, I would only ever use it moving in a true emergency.
Clutch sluggish when cold -- yeah, sounds about right. It loosens up after it gets warm.

I'm not necessarily saying these things should be acceptable. There fine by me but to each their own. I'm just suggesting the things you mention are common to all MT 3rd gen Tacoma's and not specific to your truck.

 

As was said:

The ORs and Pros are going to nose dive when braking. Just a truck thing.

The parking brake is snappy. That's a good thing in my mind.

While I highly approve of the ADM, I took a 2020 MT for a quick drive. The clutch pedal was significantly lighter than mine. I think what you have is normal. The ADM will make it feel less weird though.

 

I agree on the ADM. I did it and the feel of the pedal was improved noticeably. The clutch is still relatively light compared to my other car, but the feel improved a lot with the ADM and, consequently, the shifts got smoother.

 

One reason why I lifted mine, nose dive on OR suspension is defiantly noticeable

 

I agree. There's a reasonable amount of nose dive on braking, but I think that's pretty normal with the suspension set up.

 

Inexpensive way to improve nose dive with braking: Throw two 60 lb sand tubes in the bed. One on each side over the axle. Don't believe me? Try it. It costs about $12.
.

 

I will also say that after the ADM mod you will be able to control reverse much better.

 

They got them. The Pro has a 30mm or 32mm, same as the Sport. The OR has a 28mm or 30mm. Can't remember the exact sizes. For me, the Sport without the SB feels like an OR.

 

There should be zero change in clutch pressure or disengagement feel with the ADM. The circuit only works on clutch engagement, slowing and dampening it.

 

How does the 2020 MT feel in general compared to the older ones?

 

It was my first time in a Pro. The Fox shocks felt nice. The 04B91 tune felt the same as 04B14 Stock that I put two tanks on.

Other than the lighter clutch pedal and small difference with the brake booster, it felt just a good and tight as mine.

 

The nose diving you’re feeling is normal with our manual Tacoma’s (OR and Pro packages). They actually nose dive more than autos. Why? Because of the ATRAC brake boosters. See, us manual guys don’t get crawl control and instead get ATRAC for the fronts. It’s basically a mimicked locker that uses the brakes to put traction to the tire that’s spinning. Therefore, our manual OR’s and Pros will dive a bit more. The Pro’s front shocks are a bit “softer” as well and will enhance this feeling a bit.

Everyone else mentioned the accumulated delete mod for your clutch feel (again, normal).

 

Crawl Control is just basically an automatic version of ATRAC, we share the same Brake Booster as the Automatic OR and Pro.

 

I heard differently. Can’t back up my claims as it was word of mouth but my manual definitely dives more than my dads auto. Something is definitely different between the autos and manuals regarding the brakes.

 

It's the same brake booster, but the pedal is smaller on the manual haha.

 

Its the same, what you heard is all the Tacoma models outside of the Off Road and Pro have the traditional Vacuum Style Boosters while we get the Electric version.

 

Is your Dad's Truck also an Off Road or Pro?

 

Not a pro. His is a sport. I have a friend who has an OR auto. I’ve asked him and he doesn’t complain about diving under braking.

Still, there are plenty of threads out there claiming the booster/vacuum with ATRAC is different. And for the record, there is no ATRAC with Crawl Control. From my understanding, two different systems that do similar things. ATRAC is a bit simpler for the fact that it basically brakes the spinning wheel to force power to the wheel needing the traction.

I can do more research and provide links here when I find it. However, to the OP, the diving is completely normal and other Pro M/T owners have mentioned the same behavior.