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2004 SD F250 4X4 119K miles The speedometer fluxuates as the ABS brake light comes on. This happens several times in a 40 mile trip. I can find no problems with the ABS.

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  • Anonymous Oct 09, 2008

    speedo dose not work

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  • Ford Master
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You may have a faulty electronic speedo unit.

Posted on Aug 01, 2008

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My service traction light is one and my abs light is on


The abs makes the traction control work so fix the ABS first. The most common thing thea haqppens are the wheel speed sensers fail. In the front wheels the speed senser is incorperated into the front wheel bearing. these bearings are well known to fail at about 100 thousand miles and can fail aqs early as 80 thousand miles and most all of them fail before 140. You might notice a roaring sound ( like noisiy treaded tires) You can jack up one front wheel at a time and get in the car as your driving it and put the car in gear and run the car ( not moving but thwe trie is turing and listen for noise. I fht e wheel makes a roaring sound that gets worse as you go faster that wheel bearing is bad. Don't go over about 50 as with one tire on the groung the other that is turning, is going twice that fast or 100 MPH at 50 on the speedometer. Do the same test on the other wheel and if it's quiter or quite just change the noisy one. Once changed you just drive the car and the new wheel speed senmser will be reconized and the ABS light will go out as will the trac off light. If your ready to change both wheel bearings do so as they both have the same miles on them just not nessarily the same potholes and other rough pavement that makes them wear out faster. If thebearings are quite then you need to inspect the wires coming outr of the back of the wheel bearing.. Thjese wires get into troble and get unplugged or break the wire. If you havwe asscess to a scasnner that will address ABS systems it'll point out the ABS problem. Things that happen other than the wheel speed sensers are fuses blown for other reasons. The accumulater motor failure or extreamly cold weather the accumulate motor locks up in cold and blows the fuse. Thwe motors seldom fail but they can and do. Some veicals are nerer serviced and the brake fluild accumulates moisture ( as it's supossed to) and peaple never get the brakeing system seviced and the old brake fluild can freeze in cold weather and start croduing things. The Traction control sysem uses the brakes to control wheel spin by puting on the brake on the spinning wheel. If the system notices a wheel spinning. (Using the wheel speed sensers) So until the ABS is fixed don't try to fix the traction control system as it truly is part of the ABS systyem.

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my radio turn off then my brake light start to blink and chime ringing also my a/c light blinks i have 110,000 miles 2006 ram 1500 2wd 1 ton what can this be?

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replace the throttle position sensor when this sensor fails the idle speed fluxuates may cause the trans to shift oddly also

Aug 22, 2010 | 2004 Dodge Durango

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The Change Oil (not oil light) in my 2002 Camaro came on less than 10 miles after it left the shop for new brakes and less than 300 miles since its last oil change. What would cause the change oil light to...


There is a trip botton next to your speedometer, where it it shows how many miles are on the car and how many miles you have traveled since the trip was last set. Push it in for about 15 seconds with your ignition on and then release it. It should turn off during this time. It means wherever you had your oil changed the mechanic was not very experienced or did not know what he was doing and he did not reset the trip. I would not take a car that nice to a mechanic like that again!

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I changed the vss and the 4wabs sensers and the wires are good but my speedometer is still jumpy and my abs does not work on my 95 ford bronco but i dont have any codes that i am aware of is it possiable a...


on my 94 i didnt have codes either,but the electric motor failed on the abs due to moisture.the speedometer on mine jumps too,but mine with 220,000 miles it was the gauge cluster,couldnt tell if i was driving 5 miles per hour too slow or too fast.the cruise may be the clock spring behind the steering wheel,but most of the time the horn wouldnt work or the air bag light would be on and beeping

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Saab '02 9-3 "electrical"problem


Most likely it is the ABS module is going bad and needs to be replaced or rebuilt at www.bba-reman.com, hope this helps.

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Dead and Alive Speedometer and Odometer - 1998 Honda Civic


if both go then its the sensor ,but if car is a 98 then it could be a cable or a speedo cable crive worn out

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1 Answer

Air Bag Light, Brake Light, & ABS Light came on in the dashboard.


Check and see if your alternator is charging
Low voltage will cause those lights to come on, as the computer is shutting down.

To check your alternator you will need a volt meter... WITH the engine running you should have about 14 volts coming out. IF NOT you need to replace the Alternator!

Apr 19, 2009 | 2003 Ford Windstar

1 Answer

Took 800 mile trip


The ABS and traction control are ususally one in the same and will require a mechanic with special tools to diagnose. You can check to make sure the brake pads are not worn out (it is about time to replace them on this year car) that the wheel sensor wires are in one piece and amke sure the brake fluid is changed (This needs to be done every 24,000 miles on any car). As for the Check Engine light, you'll need a scanner to pull the code, but check the gas cap as this is the most usual culprit. We have a 2004 Grand Am (very similar to the Alero, but without the traction or ABS) and the only time the Engine light came on was when the cap was loose.

Dec 28, 2008 | 2004 Oldsmobile Alero

1 Answer

Service Brake system flashed three seperate times over 24 hours


2 suggestions:

(1) I would suggest someone scan the ABS system for codes. I Have an '03 silverado 2500HD Crew cab, and it needs an EBCM (Electronic Brake Control Module) "ABS module". "Service Brake System" message on dash, ABS and Brake warning lamps lit as well. May be the R/F ABS wheel speed sensor, but what you described happen, shouldn't have caused damage to it.
(2) If the aftermarket rim and tire combo are larger than stock (larger overall diameter), then this may affect the way your PCM functions. You can reprogram the PCM to recognize larger diameter running gear so trans shift points and the speedometer and such can function properly.
I hope this helps.

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