User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 07-14-2021, 07:29 AM #1
lemii lemii is offline
Junior Member
 
Join Date: Aug 2010
Location: NE TN
Posts: 15
lemii is on a distinguished road
lemii lemii is offline
Junior Member
 
Join Date: Aug 2010
Location: NE TN
Posts: 15
lemii is on a distinguished road
'08 T4R V8 AWD Brake Vibes

So I installed Powerstop slotted/drilled rotors on the front and rear back in 2018. Noticed some shimmying of the steering wheel and pulsing of the brake pedal about 6 months ago. This past weekend I had the rotors turned at O'Reilly's - the guy doing the work said one of the front rotors was ever so slightly warped and the other was running true; also one of the rear rotors was warped on the inside the other rotor was perfect. So I told him to take a skim cut on all four.

I installed the rotors and followed the break-in procedure and all was good. I drove the vehicle a couple of times to work with no issues. However this morning when I applied the brakes at 60 mph I felt the shimmy in the steering wheel again! No pulsing in the brake pedal though. I tried it a few times and anytime I applied the brakes when travelling over 40-ish mph I'd get a slight, but noticeable steering wheel shimmy.

So what's going on?

Thanks.
lemii is offline   Reply With QuoteReply With Quote
Old 07-14-2021, 08:19 AM #2
rdruss's Avatar
rdruss rdruss is offline
Member
 
Join Date: Oct 2013
Location: illinois
Posts: 839
Real Name: Ron
rdruss is a jewel in the rough rdruss is a jewel in the rough rdruss is a jewel in the rough rdruss is a jewel in the rough
rdruss rdruss is offline
Member
rdruss's Avatar
 
Join Date: Oct 2013
Location: illinois
Posts: 839
Real Name: Ron
rdruss is a jewel in the rough rdruss is a jewel in the rough rdruss is a jewel in the rough rdruss is a jewel in the rough
How did your pads look? Any chance you have seized calipers? I have PS rotors too since 2018 and no problems.
rdruss is offline   Reply With QuoteReply With Quote
Old 07-14-2021, 08:23 AM #3
lemii lemii is offline
Junior Member
 
Join Date: Aug 2010
Location: NE TN
Posts: 15
lemii is on a distinguished road
lemii lemii is offline
Junior Member
 
Join Date: Aug 2010
Location: NE TN
Posts: 15
lemii is on a distinguished road
Quote:
Originally Posted by rdruss View Post
How did your pads look? Any chance you have seized calipers? I have PS rotors too since 2018 and no problems.
Pads looked okay, though I didn't examine closely. How do I check for a seized caliper?

Any possibility that the tie rods could cause such behavior?
lemii is offline   Reply With QuoteReply With Quote
Old 07-14-2021, 08:44 AM #4
rdruss's Avatar
rdruss rdruss is offline
Member
 
Join Date: Oct 2013
Location: illinois
Posts: 839
Real Name: Ron
rdruss is a jewel in the rough rdruss is a jewel in the rough rdruss is a jewel in the rough rdruss is a jewel in the rough
rdruss rdruss is offline
Member
rdruss's Avatar
 
Join Date: Oct 2013
Location: illinois
Posts: 839
Real Name: Ron
rdruss is a jewel in the rough rdruss is a jewel in the rough rdruss is a jewel in the rough rdruss is a jewel in the rough
Seized caliper normally one pad from caliper will be significantly more worn down than the other because it is being held against rotor when it should be fully retracted, which causes heat/warping. Could be in the early stages.
Can't see relationship between tie rods and brakes.
rdruss is offline   Reply With QuoteReply With Quote
Old 07-14-2021, 09:47 AM #5
lemii lemii is offline
Junior Member
 
Join Date: Aug 2010
Location: NE TN
Posts: 15
lemii is on a distinguished road
lemii lemii is offline
Junior Member
 
Join Date: Aug 2010
Location: NE TN
Posts: 15
lemii is on a distinguished road
Quote:
Originally Posted by rdruss View Post
Can't see relationship between tie rods and brakes.
I'm wondering why I only experience the shimmy at high speeds. My boss suggested some slop in the tie rods - it's possible as they have 114k+ miles on them.

I'm going to check for any rotor runout tonight with a dial indicator setup and will look more closely at the brake pads. I'll also try to check for any looseness in the tie rods.

Thanks.
lemii is offline   Reply With QuoteReply With Quote
Old 07-14-2021, 11:58 AM #6
triethylborane triethylborane is offline
Member
 
Join Date: Oct 2020
Location: Denver, CO
Posts: 89
triethylborane will become famous soon enough
triethylborane triethylborane is offline
Member
 
Join Date: Oct 2020
Location: Denver, CO
Posts: 89
triethylborane will become famous soon enough
Quote:
Originally Posted by lemii View Post
I'm wondering why I only experience the shimmy at high speeds. My boss suggested some slop in the tie rods - it's possible as they have 114k+ miles on them.

I'm going to check for any rotor runout tonight with a dial indicator setup and will look more closely at the brake pads. I'll also try to check for any looseness in the tie rods.

Thanks.
Ball joint would be an item to inspect but with the issue disappearing then reappearing after a short period of time leads to an issue with the calipers.
triethylborane is offline   Reply With QuoteReply With Quote
Old 07-15-2021, 06:09 AM #7
lemii lemii is offline
Junior Member
 
Join Date: Aug 2010
Location: NE TN
Posts: 15
lemii is on a distinguished road
lemii lemii is offline
Junior Member
 
Join Date: Aug 2010
Location: NE TN
Posts: 15
lemii is on a distinguished road
Quote:
Originally Posted by triethylborane View Post
Ball joint would be an item to inspect but with the issue disappearing then reappearing after a short period of time leads to an issue with the calipers.
Yep! The front calipers were partially frozen; I didn't bother to check the rear as I ordered rebuild kits for both sets. I also ordered a whole new set of front and rear rotors and brake pads...might as well do a full brake restoration. Now the waiting begins as items start to ship!

I'll likely rebuild the calipers and use the vehicle as-is until I receive the new rotors and pads...any reason not to?

Thanks.
lemii is offline   Reply With QuoteReply With Quote
Old 07-15-2021, 08:53 AM #8
triethylborane triethylborane is offline
Member
 
Join Date: Oct 2020
Location: Denver, CO
Posts: 89
triethylborane will become famous soon enough
triethylborane triethylborane is offline
Member
 
Join Date: Oct 2020
Location: Denver, CO
Posts: 89
triethylborane will become famous soon enough
Quote:
Originally Posted by lemii View Post

I'll likely rebuild the calipers and use the vehicle as-is until I receive the new rotors and pads...any reason not to?

Thanks.
Its fine, if there was an issue with your ability to control the vehicle ala the ford shimmy of death then it would be a different matter.
triethylborane is offline   Reply With QuoteReply With Quote
Reply

Tags
brake , pulsing , rotors , steering , wheel

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
Bad vibes after lift install - Solved? Solved! thezentree 3rd gen T4Rs 186 07-18-2021 06:54 PM
Periodic humming/vibes m0ist 3rd gen T4Rs 27 08-01-2018 04:57 PM
Trying to narrow down front driveline vibes Tatonka 3rd gen T4Rs 5 03-19-2018 10:04 PM
Bad vibes WRfarmer 3rd gen T4Rs 7 04-11-2017 05:57 PM
Vibes SactoT4R 4th Gen T4Rs 1 04-28-2010 11:13 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 05:52 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2021 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