Question about 1996 Pontiac Sunfire

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96 Toyota Cavellier ,ABS engage at very low speed

The master cilinder of this car has been serviced yet the ABS become active, suddenly and intermitendly, after braking at low speed with minimum presure on the brake pedal without locking up the brakes (on tar road) or slipping. Is this a sensor or is it the management system?ABS light is still on.

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Pull the fuse for the ABS system. problem fixed.

Posted on Mar 05, 2009

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Abs clicks between 8klph and 3klph pedal pulses


When an abs system starts pulsing at low speeds when braking it is usually because the signal from one or more wheel speed sensors has become so low or disappeared altogether the system thinks the wheel has locked.

Loss of signal at low speed is often caused by corroded abs reluctor rings where they have lost tooth definition and reduced in diameter so the air gap has become too wide to produce an output at low speed.

Apr 12, 2016 | Cars & Trucks

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ABS creaking


Have you changed the wheel speed sensors? For the most pard the abs will engage at low speed due to a cracked tone wheel in the hub or cv.shaft

Dec 28, 2013 | 2004 GMC Sierra 1500 Crew Cab

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96 ford 4.9 5 speed hydrolich clutch wont shift all of a sudden new master cylinder


You have a leak and you have air in the system. More than likely the slave cylinder is leaking, the slave is a direct acting one and as with all direct acting slave cylinder it is located inside the transmission bell housing on the transmission input shaft collar. The transmission must be removed to replace it.

Jun 23, 2012 | Ford F150 Cars & Trucks

1 Answer

Low traction light sometimes comes on.Weeks go by and it doesnot come on .Then all of a sudden low traction appears again


I have three 1997 Olds Cutlass's. They do it to! Nothing to worry about. They will do that in response to a bump, or washboard road driven over at a certain speed. The wheel speed sensor on each wheel tells the computer how fast each wheel is turning. If one wheel speed is faster than the other three, as when you hit a bump, the computer thinks it is loosing traction and flashes the light, and may or may not engage the ABS system to even up the speed on all four wheels.

Now if that light comes on, and STAYS on, that is another matter. It will only do that if a wheel speed sensor becomes faulty, and then the ABS light will override the traction light.

Drive on!!!

Aug 29, 2011 | 1996 Chevrolet Cavalier

1 Answer

I have a 2000 GMC Yukon XL 1500. The antilock braked engage when slow to about 5 to 8 mph.


Here is a copy of a GM bulletin that applies to you concerns of low speed ABS activation.

Antilock Brake (ABS) Activation At Low Speeds (Clean Wheel Speed Sensor Mounting Surface) #03-05-25-007 - (09/29/2003)
Antilock Brake (ABS) Activation At Low Speeds (Clean Wheel Speed Sensor Mounting Surface)

1999-2004 GMC Yukon XL

Condition:
Some customers may comment on ABS activation at low speeds, usually below 8 km/h (5 mph). Upon investigation, the technician will find no DTCs set.

Cause
The cause of this condition may be an increased air gap between the wheel speed sensor and the hub reluctor ring due to rust and debris built up on the sensor mounting surface.

Correction
Measure AC voltage and clean the wheel speed sensor mounting surfaces.

Raise and support the vehicle.
Disconnect both the front wheel speed sensor (WSS) connectors at the frame and harness.
Place a Digital Volt Meter (DVM) across the terminals of each WSS connector.
Rotate the wheel clockwise approximately one revolution per second. The minimum reading should be at least 350 ACmV's. If the reading is less than 350 ACmV's, remove the wheel speed sensor. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual. Plug the WSS bore in order to prevent debris from falling into the hub during service.
Clean the WSS mounting surface on the hub to remove any rust or corrosion using a wire brush, or equivalent.

Important
Make sure that the sensor sits flat on the hub. Check the sensor flange against a straight edge to ensure flatness. If the sensor flange is distorted, replace the sensor.

Apply a thin layer of bearing grease to the hub surface and sensor O-ring prior to sensor installation. Use ONLY Wheel Bearing Lubricant, P/N 01051344.
Install either the original sensor or a new one in the hub. Ensure that the sensor is seated flush against the hub. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual.
Place the DVM across the sensor terminals and recheck the voltage while rotating the wheel. The voltage should now read at least 350 ACmV's.

Good luck and thank you for using Fixya.

Mar 09, 2010 | 2000 GMC Yukon XL

1 Answer

Abs problem with chevy dually


check the abs sencer on the front wheels, some time they get hot and melt, that make them short out.

Feb 18, 2010 | 2003 Chevrolet Silverado 3500

1 Answer

ABS engage Intermitendly


abs light on tells you that theres a problem code,you can have it scanned to find what problem is and fix,usually its a bad wheel sen.or you can unplug,thats up to you!

Mar 05, 2009 | 1996 Chevrolet Cavalier

1 Answer

Abs engagement at low speed


Sounds like need new Calipers for front too. Maybe a new master cylinder may be need too. Sound like to Calipers or master cylinder are now letting to brake fluid go back to the master cylinder.

Jan 31, 2009 | 2000 Chevrolet Blazer

1 Answer

2004 Toyota 4Runner Sport Brake Problem


This is a problem with the ABS applying itself prematurely. From my personal experience with this vehicle this could happen for a few reasons.
  1. One of the wheel ABS speed sensors are Bad and providing a false reading that the car is about to skid before a complete stop and therefore actives the ABS. ( that's the pushing back of the pedal that you feel at slow speeds just before a FULL STOP).
  2. Its can be also cause by the gear that the sensor is reading or getting its signal from, (this gear is on the Axles and its goes in to the Hubs).
This can also because by the ABS unit itself that's malfunctioning and in my opinion should be under warranty from TOYOTA.
In my experience in my shop it was the ABS unit once and the ABS sensor about 3 times.
Here is mu suggestion have this vehicle hooked up to a SNAP-ON scanner with ABS program and drive ON LIVE DATA while driving look at wheel speeds coming from ABS/speed sensors on wheels. They should all be the same. Try to duplicate problem(hitting bumps on brakes etc) At this time if there is a problem with the sensor it should show a different speed and it will activate ABS. If then works out then you have found the source of the problem and you can make necessary repairs. Good Luck and contact if you need more help, Thanks for using FIX YA

Jan 14, 2009 | 2003 Toyota 4Runner

1 Answer

ABS locking up front brakes at low speed


actually your system maybe fine,older ABS systems tend to lock up in low traction conditions

Jan 12, 2009 | 1996 Chevrolet Suburban

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