Much Needed Help with this sound!!!

Hello all,

Name is Dylan and i hope someone can help me here, i will keep it as short as i can.

i have a 2005 tundra sr5 acces cab V8 4x4 , im the only owner i replaced driverside rear axel, after that was completed went to drive it and now when im coming to rolling stop (5mph or slower) i hear a mooing sound and the brake pedal flutters like the abs is kicking in, no abs light changed the wheel sensors still doing it i replaced master cylinder twice now. my next step is the brake booster. Any suggestions on what could be causing this issue

Thanks in advanvance for the help.

Dylan

 

Your ABS is acting up, common issue, I don't have ABS so I haven't personally dealt with it but you need to search around on here and you will find threads with the answers you need.

When you replaced the rear axle did you do new bearings and all or was it a used axle with parts already installed? It is very critical that the tone ring is installed in the exact correct position.

 

Do you have an ABS light on? Might also check if any ABS codes. I’ll take a stab at it. Did you replace the entire axle or just the bearing and seal. The bearing is pressed onto the axle along with a spacer and tone ring. The tone ring has notches around its circumference and that provides a speed signal to the ABS sensor. The tone ring must be exactly in the right position in relationship to the fixed sensor. A lot of shops aren’t familiar with Tundras and press them on too far. I would remove that abs sensor (single bolt) and look in the hole. The tone ring should be dry and clean and free of debris or oil. If the axle seal is damaged or fails it can leak oil destroying the bearing and interfering with the ABS signal. Post some pics and scan the codes and report back.

 

I recently had a similar issue and I've read where others in this forum have as well

when mine was below 5 miles an hour I would feel the brake pedal and a sound like the ABS was kicking in on my front passenger side. Coincidentally that's where the shop had recently done some work

in my case and in the other one it related to the O-ring for the ABS sensor Given the age of our trucks the O-rings just get stretched and worn out overtime.

it only did it below 5 miles an hour, which sounds like yours. In mine and the other case I found on this forum, simply replacing the O-ring on the ABS sensor resolved the issue.

I first tested it by simply removing the O-ring and that corrected the issue. O-ring was stretched and caused the ABS sensor not to be seated correctly

 

This has nothing to do with the master cylinder or booster. Put away the parts cannon ...

Stop and use your head. Tone ring is on the axle. Tone ring is monitored by the ABS sensor to detect slipping, using the magnetic tip on the sensor. You replaced the axle, thus the ABS tone ring and/or it position on the axle is new to the truck. You're now getting ABS engagement unexpectedly. Why would you go to something in the front of the truck versus looking at the ABS-related things you touched when replacing the axle? You either screwed up the axle install, used an axle that had the tone ring pressed on properly, or you munged up the sensor or its o-ring when you pulled/reinstalled.

In addition to what what @Weagle brought up, it's typically always been one of three things:

• Shit is built up on one of the 4 ABS sensors and/or on the tone ring
• Someone replaced the bearings and/or axle, but they failed to undertand how fucking sensitive a process this is, the tone ring must be pressed just to the right spot, if it's not, you'll get false ABS engagement
• During/after removing the ABS sensor for whatever reason, either the o-ring was lost, deteriorated, misaligned, or the sensor wasn't installed square in its hole

There's always a possibility the sensor is bad, or someone mangled one. But virtually every damn time, it's one of the above three things. The 1st and 3rd are easy to check. The middle one is suspicious because you just told us "replaced axle".

More info on tone ring in case you're not following: https://www.tundras.com/threads/nee...himmy-and-abs-kicking-in.146298/#post-3669245

More info on the o-ring case, found via Forum Search and linked in that reply I just linked: https://www.tundras.com/threads/slow-speed-abs-activation-fixed.131442/#post-3343273

 

PS - you'll see in Search this topic comes up often in relation to rear axles/seals/bearings, low-speed engagement of ABS after seals. The info is all over.

https://www.tundras.com/threads/rear-wheel-bearings.127982/ (<--- read reply #11 here)

https://www.tundras.com/threads/abs-problem-after-rear-axle-bearing-install.98615/

Info on how to do things the right way:

https://www.tundras.com/threads/rear-axle-bearing-replacement.88314/

 

Shifty, thanks for the tought love
I will post some pictures this weekend
As for the axel is brand new from Dorman
Everything is new from the weal seal to the bearings. New abs sensors.

Nice to meet you all.


Thank you all for the help, much appreciated

Dylan

 

Was it happening with the old ABS sensor? If not, can you try the old ABS sensor and see if it continues.

OR

Try unplugging the ABS sensors in rear totally and see if it persists. If not, you know it's either the tone rings or the sensors.

If it continues, consider unplugging the front sensors ALSO and see if it persists.

When you can't solve a problem, sometimes removing things from the equation can help you find a solution.

Note: You may pop codes due to no sensors, and your speedo won't be working correctly when you unplug (the fronts, I think), nor will the odometer. Just expect it may happen so it's not a shock. 2005-2006 use the WSS/ABS to gauge speed.

 

Ugh…Dorman axle. What was wrong with the original? Wrecking yard part would have been better IMHO.

 

Definitely had that thought too. I generally trust Dorman's parts, more than some other aftermarket brands (as much as I'm anti-aftermarket on most things), but I wouldn't expect Dorman to get the specs right on pressing the axle.

Wasn't it you who posted the nice little image once upon a time showing the spacing required on everything? I swear theres like a 1mm margin of error on a couple things.

 

Fan-Freaking-Tastic! Thank you!!