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Re: ABS light is always on
Many times ABS problems can be attributed to a faulty WSS (Wheel Speed Sensor). These sensors are typically located at each hub, behind the wheel. They can give incorrect readings due to corrosion or brake dust build up on the sensor ring or, being an electrical component, just go bad. Some repair shops will have a dedicated scan tool to check each sensor. To check for these conditions yourself, you can trace the wiring that goes to each hub, noting any damage. On the front two hubs the sensor ring ,which resembles a gear, is located on the end of each drive shaft (CV shaft). On the rear they are typically incorporated into the hub assembly. You can use a DVOM (Digital Voltage Meter) to check each sensor as well, however this can be a little involved if your doing it alone on a floor jack on the ground. If the problem is discovered through whatever means to be in the rear, expect to have to replace the hub assembly, as most of the time the ABS components are part of the assembly itself. The other way to look at it is, if you've been driving for two years with this condition, as long as the base braking system is ok it probably isn't going to be that much of an issue to continue as you were. I'd still get it checked out though. Hope this helps.
MY 92 Accord has the same issue and the dealer diagnosed it as a bac accumulator in the ABS system. The repair was $1000 and I opted not to get it fixed. As a result, I do not have ABS. If I lived where there was a lot of ice or snow, I might get it repaired but fortunately, I live in the South where we have moderate weather. The dealer did mention that this was a common problem on the early 90's Hondas.
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I don't think hard brakeing is affected by the ABS system. ABS only kicks in during a panic stop. Hard brakeing could be caused by many things, but the system is really pretty simple. I would check the pads (or shoes) first to make sure there is adequate material for the brakes to work properly and there is no contamination of the rotors or drums. If those look good, it is probably a problem with the master cylinder. Brake jobs are not fun, but well within the scope of a weekend mechanic. A master cylinder is on the border of what you should tackle. Remember, these things stop your 2 ton car for you, you need for them to work properly. Try your library for a repair manual on your Pacifica, and look into the brake section for more info & troubleshooting ideas. Libraries used to have a large section of auto repair manuals, they were in great demand at one time. If you come up short at the library, try the internet. You could always try to buy a manual from Amazon too.
Your abs and traction control lights should only come on when you start to slide while breaking(ABS), and when your wheels spin in place when excelerating(TC). If those 2 things don't happen, which with some people they never do, you should never see the lights come on. Only when those mechanisms are in use do the lights come on. And they will always flicker as that is what abs and tc are, intermitant surges to break up the constant. ABS does this for obvious reasons...anti lock break, so when you slide, the abs "taps" the breaks in short bursts so they don't lock up. TC "taps" the exclelrator when it slips. Those "taps" are what trigger the lights on your dash, which is why they flicker and don't stay on.
The ABS dashlight is to inform you that
your automatic breaking systems need maintenance. Because this is your
breaking system you don't want to wait, take it to the mechanic and have
it checked. or you can get a code reader to clear the fault codes.
Could be .. Low break fluid, worn brake pads, ABS malfuntion,Power Break Booster Failure.Does brake system work? ABS ? Try giong in Reverse and apply break ( make sure breaks work first in drive).Other that checking fluid and the step outlined don't risk driving take it in.Good Luck.
TAKE CAR TO A GARAGE OR DEALERSHIP HAVE THE ABS BRAKES AND TRACTION CONTROL CODE SCAN.YOUR ABS BRAKE SYSTEM WILL COME ON ADJUSTING BRAKE PRESSURE TO AVOID A SKID.THAT WHY LOW TRAC LIGHT COMES ON. MOST OF THE TIME WHEN YOU SEE LOW TRAC LIGHT DRIVING ON DRY ROADS PROBLEM IS IN THE ABS BRAKE UNIT OR BAD WHEEL SPEED SENSOR.
The ABS system is an Automatic brake system control! There could be a bad ABS sensor at one of the wheels, or a broken wire to the sensor! The system is computer operated, to sense when the brake pedal is depressed, and causes the brakes to surge, rather than lock up! It is a good idea to have an ASE mechanic check this out! When there is a problem with the brake system, it can cause the car to die when the pedal is depressed to hard or fast!
Most likely you have a check engine light on also. And if you have codes pulled it will be 0500, speed sensor. Replace the one on the rear axle and all should be good. Oh and don,t forget to have code cleared.