Question about 1993 Buick Roadmaster

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Suddenly the ABS light came on. Fluid OK, sensors not broken. Is there a way to check the speed sensors?

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If you have an abs light, chances are the speed sensor on one of the wheels is not sensing movement, which means there is a bad sensor.

A wheel hub may have to be replaced.

Scan tool should indicate which wheel speed sensor is not working.

Posted on Jul 08, 2010

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  • Buick Master
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The abs light,has to do with the brakes,if the sensors have been checked then the brake liners most likely need attention,if the vehicle does not stop correctly the abs light will come on.

Posted on Apr 23, 2010

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1 Answer

Abs and brake lights on 2006 amanti


Ok if you have brake light on the dash and an abs light then you will need to check some things frist make sure the rear brake lights are all working then check the fluid in the master cylinder and fill it but only to full line check all fuses if all of theme are ok you will have to have it scanned to find out if it's a speed sensor or the pump.

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Abs light not turn off


THE LIGHT ONCE ON INDICATES THAT THERE IS A PROBLEM WITH THE SYSTEM, ARE ALL THE TYRES OF THE SAME SIZE? REMOVE ALL THE WHEELS AND INSPECT THE SENSORS AND THERE WIRE CONECTIONS A BROKEN SENSOR WIRE OR TRIGGER WHEEL WILL CAURSE THE LIGHT TO COME ON, ALSO IF DIRTH GET STOCK BETWEEN THE SENSOR AND WHEEL. AS THE WHEELS ARE OF CHECK FOR LEAKS ON THE SYSTEM LOW FLUID PREASURE WILL CAURSE THE LIGHT ON IF ALL THAT CHECKS OUT OK THEN CHECK THE ABS FUSE.

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abs sensor blinking is usually cause by a bad wheel speed sensor or vehicle speed sensor. not too sure what going up hill is doing. sometimes that can move brake fluid around if its low and will detect low brake fluid, but you brake like would also come on with the abs sensor. check and fill brake fluid to fix that. to fix a sensor you need to bring the sensor readings up on a vw scan tool to see which one is cutting out. should take to vw shop for scan tool. they might charge you .5-1 hour diag time but its better then the hassel and expense of parts replacing. finally if they find nothing wrong with the speed sensors going up hill, then its probably the abs unit. check those in that order and you'll find it.

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Abs light is on and brake light just come on. brake fluid is full and brakes seem ok


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If the brake light is on, check the fluid level immediately and add fluid if necessary.
After that, have the car's OBD-II computer scanned with a 'Brake Scan' tool for OBD-II. This will help to narrow down which wheel speed sensor is giving you trouble. It might be a broken wire, or a bad wheel speed sensor.

The wheel speed sensor sends information to the ABS side and the Traction Control side of the computer module for ABS and Traction Control.

The car will revert to standard braking and regular non braking transmission power distribution to the drive wheels when the ABS and Traction Control lights are both on.

Good luck on this repair.

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My brake and anti brake lights stay on all the time


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ABS light has come on. Will it be just the brake fluid needs filling?


most common item is a faulty speed sensor,or broken speed sensor wire.
get a scan done.the computer will tell exactly if it is the abs pump or a sensor.
the abs pumps are very expensive.

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2 Answers

ABS light on 2003 ford explorer stays on


It could be a wheel speed sensor. have your brakes inspected. good luck

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2 Answers

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Replace the rear abs speed sensor located top of the rear differential. 90% of the time this will resolve the problem as this is a very simple system not much to it. The sensors are cheap about $20.00

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