Stupid wheel speed sensor nonsense

Toyrundrive

New member
History: I broke the harnesses. Then I replaced all the harnesses and the speedometer was erratic randomly. It gave errors for both front speed sensors being bad. I pulled them out and one was pretty greasy. Is it normal to have grease on one wheel speed sensor? I'm not sure how the knuckle is setup on these. I then replaced the two fronts with chinesium from Amazon and it wouldn't read at 31mph or 62mph but otherwise worked fine. The abs and brake light went off, I just needed to recalibrate the zero point. I never did that because atrac is annoying.

Today: the Speedo quit working, and brake light are on and throwing code P0500.

I'll throw the old sensors on tomorrow after I run a diagnostic tool to see if both fronts are "bad"

The 31 and 62mph thing seems suspicious though. Does this sound familiar?

I read a post where someone was swapping speed sensors in their tranny? Is that legit?

Also: I ran it for a while with bad harnesses, would this damage a sensor? I don't see why the sensors failed immediately after damaging the harness, and then sorta worked with new harnesses.

I ran chinesium to see if the sensors were really the problem, and they're $17 instead of $300...
 
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History: I broke the harnesses. Then I replaced all the harnesses and the speedometer was erratic randomly. It gave errors for both front speed sensors being bad. I pulled them out and one was pretty greasy. Is it normal to have grease on one wheel speed sensor?

When I did wheel bearings, the one side had a bit of grease, etc. on it b/c the seal between the knuckle and the CV was shot. Cleaned it up and no issues, though no issues when it had grease on it either.

Sorry I don't have other info to help you out.
 
Yes, grease can come from halfshaft boots that have cracked.


Use OEM Toyota parts, eg sensors and harnesses. Shouldn’t have any problems. Your nearest dealer has an online parts catalog. Easy to use and free shipping if you pick up at the dealer.
 

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