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Car Forum / Dodge / Dodge Trucks / June 2005UPDATE 1999' RAM "Speed Sensor Malfunction"
I replaced the speed sensor today, using an identical one that I bought at AutoZone. Unfortunately, replacing it had no effect and the speed dial still acts erratically. It shows zero at low speeds, and starts showing speed at high speeds (40+ MPH). Any clues? i When my speed sensor went bad, all the symptoms showed up at the same time. The speedometer read zero and the ABS and BRAKE lights came on. Everything was OK before that moment. BTW, I have a 99 Ram diesel 2500. Did the new part fix the ABS & BRAKE lights? Perhaps the eratic speedometer is a different problem.  Signature-------------------------------------------------------- Ed J edj22 at attglobal dot net Do not reply to default 'reply' address. Change to above address minus the blanks. -------------------------------------------------------- >I replaced the speed sensor today, using an identical one that I > bought at AutoZone. Unfortunately, replacing it had no effect and the > speed dial still acts erratically. It shows zero at low speeds, and > starts showing speed at high speeds (40+ MPH). Any clues? > > i > When my speed sensor went bad, all the symptoms showed up > at the same time. The speedometer read zero and the ABS and > BRAKE lights came on. Everything was OK before that moment. > BTW, I have a 99 Ram diesel 2500. Exactly my problem! > Did the new part fix the ABS & BRAKE lights? Perhaps the > eratic speedometer is a different problem. No, I do not think so. Thanks for sharing. i Did you check to make sure that you don't have a second one on the transmission? SignatureIf at first you don't succeed, you're not cut out for skydiving > I replaced the speed sensor today, using an identical one that I > bought at AutoZone. Unfortunately, replacing it had no effect and the > speed dial still acts erratically. It shows zero at low speeds, and > starts showing speed at high speeds (40+ MPH). Any clues? > > i > Did you check to make sure that you don't have a second one on the > transmission? Um, that's the one that I replaced! Is there a second one somewhere else? i rear wheel speed sensor is in the rear axle on top of the axle housing > > Did you check to make sure that you don't have a second one on the > > transmission? [quoted text clipped - 5 lines] > i > -- > rear wheel speed sensor is in the rear axle on top of the axle housing Oh, I see. I was looking at it today and wondering what it was for. How is it removed? There is no obvious threading there. i >> > Did you check to make sure that you don't have a second one on the >> > transmission? [quoted text clipped - 4 lines] >> >> i It is held down by a single bolt and clamp. SignatureIf at first you don't succeed, you're not cut out for skydiving > > rear wheel speed sensor is in the rear axle on top of the axle housing > [quoted text clipped - 13 lines] > > -- > It is held down by a single bolt and clamp. Thanks. What's the name of that item? Is it also called "vehicle speed sensor"? i It is sometimes referred to as the RWAL speed sensor. SignatureIf at first you don't succeed, you're not cut out for skydiving > > It is held down by a single bolt and clamp. > [quoted text clipped - 3 lines] > i > -- >> Did you check to make sure that you don't have a second one on the >> transmission? The output speed sensor in the trans wouldn't make the ABS/Brake lights illuminate, nor make the speedo fluctuate. It may set a code, but that's it. > Um, that's the one that I replaced! > > Is there a second one somewhere else? You replaced the wrong one... in the previous thread, at least two of us told you it was the one in the rear diff. Hopefully the people at Autozone are friendly, and will take the incorrect sensor back. Most auto parts store will not take back electrical items, at least not the ones that I worked at. SignatureIf at first you don't succeed, you're not cut out for skydiving > >> Did you check to make sure that you don't have a second one on the > >> transmission? [quoted text clipped - 10 lines] > told you it was the one in the rear diff. Hopefully the people at Autozone > are friendly, and will take the incorrect sensor back. > You replaced the wrong one... in the previous thread, at least two > of us told you it was the one in the rear diff. Hopefully the people > at Autozone are friendly, and will take the incorrect sensor back. Or just keep the old one as a spare. I ordered the RWAL speed sensor from dodgeparts.com. The sensor promptly arrived today. Replacing it was easy, but a little uncomfortable. Could have been much worse with a different vehicle. This FULLY TOOK CARE OF MY TRUCK PROBLEMS. No idiot lights are lit up. ABS, check engine lights etc are all gone and my speedometer is functioning perfectly. Thanks to everyone for your help and guidance. i Just curious, how much would it cost me to fix this problem at a dealer, especially if I was not a well informed customer. thanks i > I ordered the RWAL speed sensor from dodgeparts.com. The sensor > promptly arrived today. Replacing it was easy, but a little [quoted text clipped - 7 lines] > > i Probably about $50.00 for the part and an hours labor. SignatureIf at first you don't succeed, you're not cut out for skydiving > Just curious, how much would it cost me to fix this problem at a > dealer, especially if I was not a well informed customer. [quoted text clipped - 14 lines] > > > > i |
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