Wheel speed sensor? Advise needed please

BumpyZ4 · Post by **BumpyZ4** » Tue Feb 23, 2021 10:09 pm

With the sensor installed unplug the harness and put an Ohm meter on it and spin the wheel. If the ohm meter readings don't move while the wheel is spinning the sensor is bad.

enuff_zed · Post by **enuff_zed** » Wed Feb 24, 2021 9:09 am

BumpyZ4 wrote: ↑Tue Feb 23, 2021 10:09 pm With the sensor installed unplug the harness and put an Ohm meter on it and spin the wheel. If the ohm meter readings don't move while the wheel is spinning the sensor is bad.

Thanks, I'll try that too. All good ideas for furthering my knowledge of fault finding electrickery, if nothing else.

enuff_zed · Post by **enuff_zed** » Thu Feb 25, 2021 6:03 pm

Well BumpyZ4, I'm afraid I failed to follow your advice as the new sensor arrived and I thought, sod it, just fit it.
I did, and it worked!
The original was marked up 'BMW' on one side and 'ATE' on the other. My guess is that it's the original, 17-y-o, 100k miles on it. Hammering the old disc to unstick it from the hub was probably enough to kill it, just though the transmitted shock. Maybe the wiring was getting brittle and that was the final straw?
So now all I have to do is wash the car and hand the keys back to 'management'. Weather is supposed to be good here over the weekend, so she'll no doubt be in full Thelma and Louise mode.......................well, socially distanced Thelma anyway

I shall rest on my laurels and watch the rugby.

-Tom- · Post by **-Tom-** » Thu Feb 25, 2021 10:16 pm

Good work!

enuff_zed · Post by **enuff_zed** » Fri Feb 26, 2021 10:48 am

Woke up in a cold sweat at 3am, convinced I didn't remember taking the locking wheel nut adaptor back off the wheel.
Sure enough, at 7am this morning I found it 300 yards up the road, still intact!

Off to buy a lottery ticket now!

BumpyZ4 · Post by **BumpyZ4** » Fri Feb 26, 2021 3:52 pm

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