[rootonic]

abs code 22? new wheel speed sensors not working...

Hello All!

I'm new to the community but have been enjoying the extensive knowledge base you all provide. Thank you! :thumbsup:

I have had my abs and brake lights coming on and off for a while, now they are on all the time. I had a shop check the abs and they said the right front wheel speed sensor was bad. When i replaced the sensor there was a thin metal shim/gasket that went between the sensor and the hub, but dodge did not give me a new one or even see one in their schematics. So i put the new one in w/o the shim. Still have it locking up on me and the lights are still on. My buddy borrowed his snap-on scanner from work and we watched the speeds. They stayed the same while coasting and accelerating but when braking, The new sensor would drop out at 10 mph while the old ones (drivers side and rear) would go down to 6 mph. So we took it apart and added the shim back in, now its worse drops out at 14 while the other goes to 6. the scanner showed code 22, which i think means bad reading from sensor.
We compared the new senor (oem) and the old...the old one has a longer shaft that goes into the hub/bearing. So I'm wondering if my old one is a aftermarket hub and i need to replace the whole hub/bearing assembly for it to read correctly or if its just because each wheel has different air gap? I'm thinking if i switch the drivers side then i will have two wheels locking up because the gap is too big... so therefore needing to swap the whole thing...am i on the right track?

 

[rootonic]

still trying to figure out how to fill in sig... 99' 2500 4wd 24v...

 

[rootonic]

any ideas? bump...

 

[Mopar1973Man]

Bad wheel bearings?

Oversize tires tend to enhance the failure of bad wheel bearings. As you apply the brakes you yanking the hub over on the bearings and the tone ring is moving away from the sensor and then ABS trips the light and problems start. Check your wheel bearings if any play change them also its best to replace front sensors as a pair.

 

[rootonic]

Bad wheel bearings?

Oversize tires tend to enhance the failure of bad wheel bearings. As you apply the brakes you yanking the hub over on the bearings and the tone ring is moving away from the sensor and then ABS trips the light and problems start. Check your wheel bearings if any play change them also its best to replace front sensors as a pair.

Running 285/75/16's dont think there so big... lifted the front end and tested the bearing and it didn't have any slop. Think it has an aftermarket hub in it and the new sensor is too short to make a good connection w the tone ring. There is a difference in the length of the sensor, and as the old one has a double o ring and the new oem only one...

Would only changing one make that one not read correctly? The new one wont read under 10 mph... which makes me think the tone ring is too far away...
If I switch out the whole bearing assembly on the passenger side will i need to do the drivers as well so the air gap is the same?:confused013:
Also do you know if timkin bearings are oem? I already bought the speed sensors from the dealership n cant return them, timkin sells the hub/bearing assembly w or w/o the abs sensor...but don't want to buy a hub my mopar sensor wont work in, already have that problem

 

[Mopar1973Man]

Running 285/75/16's dont think there so big...

Size isn't everything its leverage and weight.

lifted the front end and tested the bearing and it didn't have any slop. Think it has an aftermarket hub in it and the new sensor is too short to make a good connection w the tone ring. There is a difference in the length of the sensor, and as the old one has a double o ring and the new oem only one...

This is why I suggest replacing in pairs so you get a matched pair and you don't have a older sensor skewing the readings.

Would only changing one make that one not read correctly? The new one wont read under 10 mph... which makes me think the tone ring is too far away...

Yes. I seen this before where one sensor is replace and the old one is partially damage and not matched to the new one so still throwing codes.

If I switch out the whole bearing assembly on the passenger side will i need to do the drivers as well so the air gap is the same?:confused013:

If you going to change bearing do them as well in matched sets. Why have a fresh bearing on one side and wore out bearing on the other.

Also do you know if timkin bearings are oem? I already bought the speed sensors from the dealership n cant return them, timkin sells the hub/bearing assembly w or w/o the abs sensor...but don't want to buy a hub my mopar sensor wont work in, already have that problem

All hubs are basically design the same so all the ABS sensors should work the same.

 

[rootonic]

so i realize that not having both sensors replaced they may not be synced together, but is it normal for it to not read under 10mph on a snap-on reader? Would that indicate it's not connecting well w the tone ring or just because its not synced w the other side (which reads down to 6mph)? when slowing down at 10mph passenger side goes to 0, while driver side continues to 6mph before jumping to 0. other than that they read the same... does this sound like the hub/air gap not correct? i dont want to put the other new sensor in just to have it still not reading right and be out another $150.:confused013: thanks for the help not trying to just clarify. the mopar sensors' shaft that goes into the hub is about an 1/8 inch shorter than the one i took out...

 

[rootonic]

bump........