Okay, so I've had my brake light and abs lights on. And my my speedometer was not kicking til 20mph or so. So I know its the speed sensor. So I went down to my favorite store at o'reilys and got me a rear speed sensor for $31.99. Took out the old and installed it last night. Was working fine from work to home today and then my lights came back on, so I thought I overtightened it. So I get back under loosen then snug it, and my lights went off again. But now the problem is my speedometer won't even register anything past 5-10mph and my lights will go on and off backand forth. I'm confused. Anyone know of a solution? Would be greatly appreciated.

Johnny

 

did you reset the computer after you changed the sensor? unplug the neg battery cable and turn the headlight switch on. if you do that and it still doesn't help, you may want to try testing the gauge cluster, which is a procedure that's in the factory service manual. I believe it involves holding in the trip/mileage button on the dash with the keys in the on position.

also, how do you know it was the rear speed sensor? if you can, get to a store that has an obdII reader that will read abs codes

 

Forgot to mention I'm riding a 1998 Dodge Ram 1500 4WD 5.9L

 

Csdavies, thanks for the quick reply. Never knew about reseting the CPU. I didn't even try a cluster test either. Let me try them real quick.

 

I'm almost certain it was the rear speed sensor too due to my lights going out, and also I noticed my shifting through gears was a whole lot smoother, if that would help it in any way.

 

Wouldn't be the first time a new part was bad, right out of the box....

 

+1... Take it back. What brand? And disconnect the negative battery cable before removing and replacing. Do that any time you clean or replace any sensor.

 

Took it back, got it replaced with another one. Picked up some dielectric lube too, and put it in her. It works great, speedometer is working from the jump and no more lights, with smoother gear shift.

Thanks to all who responded. It feels so good knowing your truck is in better shape than before.

 

Thanks for letting us know. What brand was it?

 

Brand named BWD. Rear Speed Sensor. Got a bad one right out the box the first time apparently. Second times a charm though.