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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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ABS at slow speedsViews : 840 Replies : 16Users Viewing This Thread : |
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Mar 7th, 2021, 19:22 | #1 |
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ABS at slow speeds
Hi Guys,
I tried searching the forum but nothing came back using ABS as the search string, so here is the issue. Occasionally I used to get the ABS cut in at low speed, sort of when you pull in to a parking space. Lately this is becoming more frequent and feels like it's the front only (not sure if its both wheels or one as its hard to tell from the sound it makes). It's also happening when pulling up to junctions at sub 20mph sort of speeds, and becoming more frequent. I'm not sure if its related, but I had a replacement O/S drive shaft fitted around 4 or 5 years back, which came off a donor car as the garage had issues matching the splines either side of the UJ when my original UJ failed. Could the issue be just a mucky sensor, or a sensor that needs replacing, and if so, is this an easy job for someone with just a set of ramps and a socket set ? The car is a V70 non turbo 2.5 10v 1999 on an S plate. TIA
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Malcolm |
Mar 7th, 2021, 19:38 | #2 |
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Also, just to add, I have no warning lights on the dash regarding ABS
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Malcolm |
Mar 7th, 2021, 20:51 | #3 |
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I've tried searching 'ABS' on the forum before and didn't have any luck, if I remember rightly it's because ABS is too short for the search to work properly.
I've just got over a similar problem with mine after messing with the CV joint, in cleaning it off before I started work I must have brushed away too much of a rusty tooth on the ABS reluctor ring on the joint, the teeth on the ring cause a variation in the magnetic field as they pass the sensor so the ABS knows the wheel is turning, if the wheel stops the ABS gets no signal so releases the brake to let the wheel turn, but the same thing happens if there's a missing tooth (or teeth). Fitting a new ring solved my issues. Might be worth having a look at the reluctor rings on yours especially as the driveshaft is from a donor. A new ring will look like the photo below, my old one was significantly more rusty and crusty We discussed it recently here Help !! Dither mode on Spending Money
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David V70 2.5 10v Torslanda Manual 98 Sreg |
Mar 7th, 2021, 21:01 | #4 |
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Dave, thanks for the reply.
It sounds like a big job? - is it something that requires the removal of the wheel ? If so I'm stuck as I have no means of supporting the car other than ramps...
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Malcolm |
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Mar 7th, 2021, 22:07 | #5 | |
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Agree with the above - cleaning or replacement of the front reluctor rings would be my guess for those symptoms - have a look at the thread linked above for more info. Cheers!
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Mar 7th, 2021, 22:26 | #6 |
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Yeah, I have a standard jack, but would not work on a car without additional support, so time to invest in a set of stands.
What's involved - any specialist tools needed? Sorry missed the link - having a look now
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Malcolm |
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