Light Pounding & Jerking When Applying Brakes

[Muscleford]

I feel a light jerking /pounding when applying the brakes. My original thinking was a warped rear brake rotor, but now I am thinking maybe the anti- lock is kicking in. These are not hard panic stops. I am a light pedal pressure type driver that starts stopping early.

Is there an adjustment on when the anti-lock begins to kick in? I had anti-lock brakes on my 2008 and 2011 Ranger and have them on my 2014 Fusion and never had this.

Thoughts, ideas??

I have a appointment next Tuesday at the dealer's service department.

Sponsored

 

[airline tech]

No adjustments:
Where do you feel the sensation? and does the brake pedal pulse or is it a vibration / buzzing in the pedal?

You may try checking for codes (ABS) and also get into a open parking lot and get up to 30 MPH or so and give a a few hard brake applications.
You may have a (High Spot) on one of the rotors that has a area of brake pad material left on the rotor - visually the rotor will have a dark spot in one area then the rest of the rotor clean.

As far as ABS kicking in when its not needed (if on a single wheel) only would be a wheel speed sensor that is not reporting correctly if this is happening, I would describe the brake pedal feel and sound as more of a - BUZZING on your foot.

 

[RangerBill]

To isolate if it is front or rear brakes causing the issue, you could press and hold the emergency brake button in while using the emergency brakes only to slow the truck. If the pulsing is still present, then it is probably the rear brakes causing the issue. If not, then it is likely the front brakes.

(Emergency Brake a.k.a. Parking Brake, for those who are name sensitive)

Usually if the ABS system has activated, it will light a light on the dash for a short time.

 

[Muscleford]

No light on dash. I feel it in seat/body. It feels like truck is intermittently not decelerating at the same rate is was seconds ago.

 

[Deleted User 38384]

feel a light jerking /pounding when applying the brakes.

Sounds like the opening sentence on my exGF's resume...

 

[SDXLT]

Sounds more like slip yolk needing grease than a brake issue

 

[Muscleford]

Sounds more like slip yolk needing grease than a brake issue

Interesting thought, I will raise that when I take it in on Tuesday

 

[Rp930]

Sounds like junk rear rotors to me.

 

[dannyboy12]

To isolate if it is front or rear brakes causing the issue, you could press and hold the emergency brake button in while using the emergency brakes only to slow the truck. If the pulsing is still present, then it is probably the rear brakes causing the issue. If not, then it is likely the front brakes.

(Emergency Brake a.k.a. Parking Brake, for those who are name sensitive)

Usually if the ABS system has activated, it will light a light on the dash for a short time.

Maybe just a note here: the emergency/parking brakes use a separate drum brake system than the normal disc brakes. RangerBill's suggestion would help sort out if the parking brake is causing an issue.

 

[Rp930]

Maybe just a note here: the emergency/parking brakes use a separate drum brake system than the normal disc brakes. RangerBill's suggestion would help sort out if the parking brake is causing an issue.

No it doesn’t.

 

[RangerBill]

Maybe just a note here: the emergency/parking brakes use a separate drum brake system than the normal disc brakes. RangerBill's suggestion would help sort out if the parking brake is causing an issue.

The Ranger uses the same pads for the emergency brake system.

 

[dannyboy12]

The Ranger uses the same pads for the emergency brake system.

Sorry for the misinformation!

 

[QuickSilver]

Mine is doing something similar, a shudder when light to normal braking, I doubt mine has anything to do with abs, feels more like a rotor issue. Will check it next time it goes in.

 

[Muscleford]

Mine is doing something similar, a shudder when light to normal braking, I doubt mine has anything to do with abs, feels more like a rotor issue. Will check it next time it goes in.

QuickSilver's description of his issue describes my issue better thanI did. I wll post an update after my service appointment next Tuesday.

 

[My12SecRanger]

I see this issue quite a bit, make sure the rear caliper slides are lubed and able to slide easily

Sponsored