user113 wrote:
That is totally bizarre.
Here is how they work:
Quote:
DESCRIPTION
Three wheel speed sensors are used. The front sensors are mounted to the steering knuckles. The rear sensor is mounted at the top of the rear axle differential carrier. Tone wheels are mounted to the outboard ends of the front axle shafts. The gear type tone wheel serves as the trigger mechanism for each sensor.
OPERATION
The sensors convert wheel speed into a small digital signal. The CAB sends 12 volts to the sensors. The sensor has an internal magneto resistance bridge that alters the voltage and amperage of the signal circuit. This voltage and amperage is changed by magnetic induction when the toothed tone wheel passes the wheel speed sensor. This digital signal is sent to the CAB. The CAB measures the voltage and amperage of the digital signal for each wheel.
(This is from the 2005 manual, if you have a 2006 it will have four sensors.)
As you see, the "gear type tone wheel serves as the trigger mechanism for each sensor." The sensor is just detecting the teeth on the gear as they move past it. The only way I can see this happening is if there are a different number of "teeth" on the one gear. I suggest you count the teeth on each of the front hubs to make sure they are the same. It seems like the new hub might have more teeth. Or possibly a burr or other defect that makes it look like it has more teeth.
I will take out both front wheels and compare both hubs tomorrow but in the meantime, when I purchased the SKF BR930224 Hub Unit on Amazon, it was saying it was for my 2005 Jeep Liberty 2.8 CRD and I also checked on other sites and they were all saying it was ok for my Liberty. Could this be wrong?
I tried checking on SKF but didnt find information about it...
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