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3rd Gen - ABS Sensor + Ring / CV Joint

Forum Technical Chassis / Brakes / Steering / Wheels


Chassis/Brakes/Steering/Wheels discussion
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 Postby dwallis92 »Thu Oct 12, 2017 4:01 pm

I've been living with this since I brought the car, it's the whole reason I got it so cheap because old owner thought ABS pump had failed (turns out somethings chewed up ABS Ring + sensor). First thing I did was new discs and pads all round because the ones on the car were appalling! This is when I noticed the chewed up reluctor ring and the sensor which is... missing the sensor lol.

I purchased a new sensor from BluePrint (who assured me that it was 100% the right sensor for the car) and multiple sets of rings from various sources (none of which had the correct shaped teeth). Turns out the sensor fits, but doesn't have the right connector. BluePrint have said that it will void the warranty of the sensor, but replacing the connector with a 2-pin weatherproof molex should work.

That doesn't solve the problem of the ring though, and I don't want to replace the sensor just yet as I'm still unsure as to what's caused them to get so chewed up. My Dad seems to think a stone must have chipped up and lodged itself in there, but that doesn't make sense to me as theres only a small gap for a stone to fit into and the damage to ring and sensor is quite substantial. I think probably outer CV joint, and for the sake of about £25 a wheel I'm probably going to just replace them anyway as it saves me time and makes the job easier, old joint off new one on instead of old one off, remove ring and freeze, bake new ring, etc. Only thing is it's never made any clicking or grinding sounds, and doesn't feel down on power or weird while cornering.

What I'm wondering is if anything else could have caused the issue, something i'm not thinking of or seeing. I'm sure you can all appreciate I don't want to be fixing things twice or wasting money on repeatedly buying the same parts. And on top of this I want the ABS system to actually work! Currently if I have to brake harder than normal my front wheels lock up and slide (not helped by the high quality discs and pads fitted lol).

Thanks again in advance for any help or advice you can offer, it's always greatly appreciated :)

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 Postby wurlycorner »Mon Oct 23, 2017 12:27 am

Is the old reluctor ring otherwise intact? Hasn't fractured so that part of it opens up at speed and catches on the sensor, has it?
They can suffer from corrosion between the back of the ring and the outside of the joint casing, causing just that (reluxtor ring to fracture)
Or bent mounting bracket for the sensor???
Or someone has previously replaced the sensor with the wrong one (one that stick out too far)???

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