User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-17-2024, 10:58 PM #1
KelOfTheRockies KelOfTheRockies is offline
Member
 
Join Date: Jan 2016
Location: Denver
Posts: 49
KelOfTheRockies is on a distinguished road
KelOfTheRockies KelOfTheRockies is offline
Member
 
Join Date: Jan 2016
Location: Denver
Posts: 49
KelOfTheRockies is on a distinguished road
Brake seizing after heavy traffic.

2000 Limited 240,000 miles

Still having brake troubles after replacing a lot of stuff. I don't feel bad about the parts, because they were old and it's better having new on something critical as brakes. Here's what's new

Tundra rotor/caliper upgrade (5,000mi ago)

Recent stuff:
  • New rear brake shoes and drums
  • New front pads
  • New rubber hoses on front
  • New Master Cylinder
  • New Booster
  • Flush & bleed - two quarts DOT3 through the system
My work commute is 25mi each way. Morning traffic is mostly a breeze and I get only two to seven of the 31 traffic lights are red, so I cruise.

Home commute is a nuclear nightmare. Million cars and stop-go-stop-go-slow down-go-stop-speedup-slow down-stop-go etc etc etc (channeling Yul Brenner) for twice as long as the drive out.

Today, about 2/3 of the way in, my brake pedal has about half-an-inch of press before I have solid braking. Just shy of panic brake. Another few miles and I can't go more than 50mph with WOT, and when coasting, it feels like the brakes are engaged

A few more miles, and the truck is noticeably slowing down while I have throttle wide open. I parked for about twenty minutes and then the brakes were back to normal.

Have had this happen three times in the last couple of weeks.

Any thoughts where this is coming from?

Your input is appreciated!

—K
KelOfTheRockies is offline   Reply With QuoteReply With Quote
Old 06-18-2024, 01:37 AM #2
2TH4IST's Avatar
2TH4IST 2TH4IST is offline
Member
 
Join Date: Jul 2019
Location: Silent Hill
Posts: 515
2TH4IST is just really nice 2TH4IST is just really nice 2TH4IST is just really nice 2TH4IST is just really nice 2TH4IST is just really nice
2TH4IST 2TH4IST is offline
Member
2TH4IST's Avatar
 
Join Date: Jul 2019
Location: Silent Hill
Posts: 515
2TH4IST is just really nice 2TH4IST is just really nice 2TH4IST is just really nice 2TH4IST is just really nice 2TH4IST is just really nice
When this happened did you notice any excessively hot brakes or a burning smell from a specific wheel? Are your tundra caliper pistons all moving (all 8 of them) known issue on poor rebuilt calipers? How about the rear cylinders? Did you lube the rub points on the shoes backing plates?

Next place to look could possibly be a bad booster. Some type of internal failure. When the issue happens is the brake pedal lower then when it doesn't happen?

Lastly it could be a sticking master, harder to test/diagnose.

I don't think it could be the 3 rubber hoses having a internal tear preventing the pressurized fluid to return to the master. Well maybe it could be the rear one having an internal tear.
__________________
There's danger lurking around every corner, that's why I propose we make all of our buildings round.

I don't remember the time I was human that's why I don't understand anybody.
2TH4IST is offline   Reply With QuoteReply With Quote
Old 06-18-2024, 09:31 AM #3
Ibrad Ibrad is offline
Junior Member
 
Join Date: Feb 2024
Location: Kingsport tn
Posts: 15
Ibrad is on a distinguished road
Ibrad Ibrad is offline
Junior Member
 
Join Date: Feb 2024
Location: Kingsport tn
Posts: 15
Ibrad is on a distinguished road
Your upgrade has clearly not helped your rig. You said it's happened 3 other times and you've had to use wide open throttle to keep going. After the first time this happened the rig should be parked till fixed. It clearly is a reoccurring thing and it's obviously in your brake system. Your caliper/ calipers are hanging. If it was just one side you'd notice more steering Input to keep the rig straight. It could be pinched brake lines after the first initial brake activation not letting the fluid bleed back. Booster could be bad. Master cylinder could be bad to. If you have the old parts I'd swap out your brake lines and try that first. With wide open throttle your brakes have to be toast and your calipers aren't fairing well either. Smoke should be pouring out of the wheels wells also. I wouldn't chance driving it again till this is fixed and certainly don't keep going down the road when you know you have a bad problem again unless you don't mind the chance of your rig catching fire and bring the stop and go traffic to a halt for miles while you get toasty from a 4Runner inferno.
Ibrad is offline   Reply With QuoteReply With Quote
Old 06-18-2024, 10:51 PM #4
spartacus's Avatar
spartacus spartacus is offline
Senior Member
 
Join Date: Mar 2010
Location: denver
Posts: 3,058
spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of
spartacus spartacus is offline
Senior Member
spartacus's Avatar
 
Join Date: Mar 2010
Location: denver
Posts: 3,058
spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of spartacus has much to be proud of
Pump the brakes 5 times then keeping the foot on the brake pad start the motor the pedal should drop a little. Check the fluid. Brake pads floating on the pins. e brake good. Check valve on the booster. If you replace it also replace the grommet. I could hear a hissing air sound in the cab when parked in the garage when my brake booster went bad. Also check for diff fluid in the rear drums(rear wheel bearing leaking swelling up the shoes. Vacuum lines all good. You might stumble across the problem while doing the diagnostics. Good luck.
spartacus is offline   Reply With QuoteReply With Quote
Old 06-19-2024, 11:38 AM #5
3bears 3bears is offline
Senior Member
 
Join Date: May 2015
Location: north east of Fairbank out there in the frontiers Alaska
Posts: 3,310
Real Name: 3 Bears
3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold
3bears 3bears is offline
Senior Member
 
Join Date: May 2015
Location: north east of Fairbank out there in the frontiers Alaska
Posts: 3,310
Real Name: 3 Bears
3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold 3bears is a splendid one to behold
so with all you listed...you stopped at rear cylinders and rear hose ? I dont think it is either of those, but I have seen old hoses go bad, and swell to the inside, not be visible and blocking correct fluid flow.
When you replaced the booster , did you replace the check valve.? With those I have had them fail, but making brakes very hard to push and function, but I guess they could fail other direction too.
__________________
2000 SR-5 Highlander version 4:30's, factory locker , green, bought 6/21
2001 SR-5... bought 11/20..sold 6/21....
2000 SR-5 moded, lifted, e locker, other cool stuff, totaled 10/20
2002 tundra ac v8 4wd
1969 kharmann ghia
3bears is offline   Reply With QuoteReply With Quote
Old 07-26-2024, 01:39 PM #6
jhams jhams is offline
Junior Member
 
Join Date: Jul 2024
Location: Indiana
Posts: 7
Real Name: jakobi
jhams is on a distinguished road
jhams jhams is offline
Junior Member
 
Join Date: Jul 2024
Location: Indiana
Posts: 7
Real Name: jakobi
jhams is on a distinguished road
maybe your pressure line?
jhams is offline   Reply With QuoteReply With Quote
Reply

Tags
brake , brakes , commute , miles , traffic

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
I think a brake caliper is seizing Friday88 3rd gen T4Rs 19 01-11-2023 12:27 AM
Rear Brake Seizing - Temporarily Disable? denvermaxd 3rd gen T4Rs 20 01-03-2021 01:38 PM
brake pedal require a heavy foot lj4r 4th Gen T4Rs 4 10-22-2019 03:12 PM
Heavy Brake Fluid Leak juliwi Classic T4Rs 4 08-13-2014 01:12 PM
Brake Caliper Seizing IanV 3rd gen T4Rs 4 04-23-2012 07:35 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 01:41 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020