Weird problem

[Stuntmanmike1977]

Hey everyone. I've had an ABS issue for about 2 months now trying to figure it out. The ABS kicks in with minimal to normal brake pressure mainly at low speed. Happens every other time I apply the brakes. Can't find anything obvious and no brake or ABS lights either. Any ideas what I can check for?

 

[Chickenhawk]

Time to change your wheel hubs.

 

[Mooseman]

Just need to find out which hub is doing it. You would need a scanner capable of showing live wheel speed data or a Bluetooth OBD adapter with the Torque app to watch which wheel speed drops off.

Sometimes cleaning the sensor and the hub surface to remove rust under the sensor (rust jacking) fixes it. However, if you notice that the hub is noisy, loose or dry, it likely needs to be replaced, which is the majority of the cases.

 

[mrrsm]

The PERFECT Visual Diagnostic using a DMM or a DVOM and Simple Steps for the Repair Video... If NOT performing an out and out Hub Replacement:

 

[Stuntmanmike1977]

Very informative video. Just hope my bolt doesn't snap off. Will reply with results. Thank you everyone.

 

[Stuntmanmike1977]

Forgot to ask, does the key have to be on for the voltage test and does it matter which wire from the meter goes to which pin?

 

[mrrsm]

No.... (KOEO) The ABS Sensor consists of having a VERY Fine Coil of Wire and a Magnet inside of the Black Plastic *Thingy* that generates a VERY Small A/C Sine Wave Current as the Tiny Teeth of the Steel Reluctor Wheel fitted around the Axle inside of the Front Wheel Hubs pass beneath it.

This *Toothy Action* WILL generate the VERY Mild Current of around 450 Millii-Volts via Electro-Magnetic Induction whenever the Front Wheels are spinning just a few Rotations Per Second...say...around 3-5 MPH. If the Alligator Clips are on backwards... it may just add a (-) Negative Sign on the DMM Screen when set to "A/C Voltage".

If the Brakes should LOCK UP on "Black Ice" or upon "Snow and Slush Slick Roads" or when "Hydro-Planing on Water at High Speeds"... it becomes -=impossible=- to Steer any Vehicle when JAMMIMG on the Brakes. In those instances... the Steering Wheel still manually works... but will NOT take effect as the Vehicle will continue to follow the LAST Path or Vector in a STRAIGHT LINE that it was on via its Momentum ...just before the Wheels LOCKED UP.

The passive ABS Sensors are supposed to signal the ABS Hydraulic Control Module to break these Lock-Ups with minute and frequent *Fluid Pressure Interruptions* to ensure that "Rolling Friction" with the Road Surfaces are maintained under such conditions ...passively working even if the Vehicle Stalls out when At Speed.