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Brakes engage while driving


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Lord_Driz
User

Aug 9, 2016, 3:16 PM

Post #1 of 18 (2040 views)
Brakes engage while driving Sign In

I have 2006 explorer 4x4 xlt 4.6. While im driving my brakes engage but only while im turning or coming out of a turn and the brake pedal becomes difficult to press. There are no lights on on the dash, allthough the advance trac light will come on for a few seconds. When i disable the the advance trac, by holding the button down, the problem will go away but i can hear and feel grinding. I have replaced the front driverside wheel hub assembly because i was told that i had a bad wheel bearing and it was causing the ABS to engage. The tone rings seem to be intact and i recently replaced the front brake pads.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 9, 2016, 3:43 PM

Post #2 of 18 (2024 views)
Re: Brakes engage while driving Sign In

Is it possible that you twisted the flex brake hose when putting the caliper back on.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Lord_Driz
User

Aug 9, 2016, 3:50 PM

Post #3 of 18 (2019 views)
Re: Brakes engage while driving Sign In

I replaced the brakes to try to fix this problem.


Lord_Driz
User

Aug 9, 2016, 3:51 PM

Post #4 of 18 (2016 views)
Re: Brakes engage while driving Sign In

I will check. Thank you.


Hammer Time
Ultimate Carjunky / Moderator
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Aug 9, 2016, 3:52 PM

Post #5 of 18 (2014 views)
Re: Brakes engage while driving Sign In

Could what's happening here possibly be the ABS activating?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
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Discretesignals profile image

Aug 9, 2016, 4:01 PM

Post #6 of 18 (2009 views)
Re: Brakes engage while driving Sign In

Are all the wheels the same size? Was there any work done prior to this problem?





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 9, 2016, 4:02 PM)


Lord_Driz
User

Aug 9, 2016, 4:02 PM

Post #7 of 18 (2008 views)
Re: Brakes engage while driving Sign In

Ive test drove it a few times only once the ABS light came on temporarily


Lord_Driz
User

Aug 9, 2016, 4:05 PM

Post #8 of 18 (2006 views)
Re: Brakes engage while driving Sign In

All wheels are the same size. No work previously


Discretesignals
Ultimate Carjunky / Moderator
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Aug 9, 2016, 4:16 PM

Post #9 of 18 (1995 views)
Re: Brakes engage while driving Sign In

You should have a shop scan it to see if there are any ABS codes stored. You'll need to take it to a shop or someone that has the scan tool that can access the ABS control module.

Are the pedals adjusted all the way back. There is a harness back there that can get pinched and cause issues.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 9, 2016, 4:16 PM)


Lord_Driz
User

Aug 9, 2016, 4:32 PM

Post #10 of 18 (1991 views)
Re: Brakes engage while driving Sign In

I took it to autozone, no codes. Pedals not sll the way back but i will check. Thank you.


Discretesignals
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Aug 9, 2016, 4:37 PM

Post #11 of 18 (1989 views)
Re: Brakes engage while driving Sign In

Autozone can only scan the engine controller on the global side. You need an enhanced scan tool to be able to scan the other modules in the vehicle.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


Lord_Driz
User

Aug 9, 2016, 4:41 PM

Post #12 of 18 (1987 views)
Re: Brakes engage while driving Sign In

Oh alrighty then.. that will have to wait until tomorrow. Thank you.


Discretesignals
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Aug 9, 2016, 4:49 PM

Post #13 of 18 (1981 views)
Re: Brakes engage while driving Sign In

You need to gather as much information as possible, so you can try figure out which direction to go for troubleshooting your issue. If there are codes stored in the other modules that are related to your issue, it might help point you in the right direction. A high end scan tool might also be able to monitor the ABS/TRAC controller data to see what the inputs and outputs are doing during the event. If a stability/abs/or trac event is happening it should show up on one of the data parameter identifiers. The grinding noise should be investigated also. Maybe you can roll into a shop and have them do an inspection and try to isolate the source of the grinding. Maybe the grinding and the event are related somehow.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 9, 2016, 4:51 PM)


Lord_Driz
User

Aug 9, 2016, 5:22 PM

Post #14 of 18 (1976 views)
Re: Brakes engage while driving Sign In

Ok so i jacked up the oposite side of the hub assembly i replaced and shook the tire. I can wiggle it. How much give, if any, should there be?


Discretesignals
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Aug 9, 2016, 7:37 PM

Post #15 of 18 (1958 views)
Re: Brakes engage while driving Sign In

There shouldn't be any play in the hub bearing. If you spin the wheel, can you hear the bearing grinding? You can remove the wheel speed sensor from the bearing hub. Pull it out and see if there is metal chips on the end or the end is chewed off. Either way if there is play, you'll need to replace that one too. Sensors can also get rust jacked. Rust forms underneath where the sensor mounts, raises it up, and cause a wider gap between the end of the sensor and tone ring. That will make the sensor produce a weaker signal which will cause the ABS controller to interpret a slower wheel speed than the other wheels.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 9, 2016, 7:45 PM)


Lord_Driz
User

Aug 9, 2016, 8:13 PM

Post #16 of 18 (1950 views)
Re: Brakes engage while driving Sign In

Discretesignals you sir.. are a god! I ordered a new hub assembly. I will let you know the results after i install. Thanks


Hammer Time
Ultimate Carjunky / Moderator
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Aug 10, 2016, 3:58 AM

Post #17 of 18 (1941 views)
Re: Brakes engage while driving Sign In


Quote
Discretesignals you sir.. are a god!


WOW........ Is that the church of the beer can?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Aug 10, 2016, 3:58 AM)


Lord_Driz
User

Aug 12, 2016, 12:51 PM

Post #18 of 18 (1911 views)
Re: Brakes engage while driving Sign In

Ok so i replaced the wheel hub assembly and everything seems to be working perfect. No more problems . No grinding or braking.






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