Skip the auto shop - Our mechanics make house calls

Q: When stopping at slow speeds the abs feels like they are engaging.

asked by on

When stopping between 0-10 mph the brakes feel like the abs are engaging when I push lightly on the brake pedal. If I push hard on the brake pedal the issue doesn't happen. I'm thinking that either the abs sensors are dirty or out of place, or possibly the sensors or module needs to be replaced. Is there anyway to trouble shoot if a sensor or the abs module is faulty if I had already cleaned the sensors up with a brush and soapy water? Also when I clean up the abs sensors is a toothrush and soapy water alright, or should I use a stronger chemical like brake cleaner?

Thanks, Daniel H

My car has 187000 miles.
My car has an automatic transmission.

A: Hello. If you’ve already cleaned the sensor...

Hello. If you’ve already cleaned the sensors with soap and water then you probably won’t need to clean them again with stronger chemicals. The ABS sensors function as magnetic type sensors, and only need to be clean and free of excessive debris or metal shavings to function properly. You can test the wheel speed sensor signals with a multi meter or scan tool to see if they are giving a proper signal. If it is not then then there may be a wiring issue, or more likely one or more of the ABS wheel speed sensors may need to be replaced. A few other things that can cause those symptoms are a faulty ABS module, or more commonly, a bad hub assembly. The ABS sensors read their signal off a reluctor wheel that is built into the hub, and can experience problems if the wheel or hub wear out, or have some sort of issues.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Advice on buying a scan tool

No, I can't think of one that would go for under 500 dollars. If you are talking about the ones that are bi-directional and have a built-in scope, these things start at 1,500 up to 12,000 dollars. For the scopes,...

Q: Steering noise, brake failure, dash lights on - 2004 Cadillac XLR

GM issued several service bulletins which appear to deal with this scenario (TSB Service Bulletin Number: 10342498 &10574399 ). Check with your Cadillac dealer.

Q: Fuel consumption issues after crankshaft position sensor reset

Hello. If your lights are coming on and off then there may still be an issue somewhere with the vehicle. If there was a recent reset due to an issue with the crank position sensor it may be possible that...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...