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Topic: ABS light staying on (Read 4458 times) |
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leewar
Senior Member
I'm a YaBB newbie!
 
Posts: 1504
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Re: ABS light staying on
« Reply #20 on: Oct 19th, 2009, 3:03pm » |
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You do not need to remove the brake pipes, only the controller underneath the abs pump. Go to the forum page on "ABS Modulator" and follow the diagrams and repair procedure. The only difficult part is removing the two Torx screws that holds the controller onto the pump, there is not a lot of room to work, especially the one nearest the bulkhead!! I did it by using a small mirror to establish exactly where they were. I then held the bit while using a adjustable spanner to undo them. Once cracked they are easy to remove. In the repair of the controller itself, it is suggested that you drill a hole in the base below the plug using a stand drill and a 20mm bit. As I do not have one and was a bit dubious of drilling a hole and causing some damage without one, I carefully and patiently used a stanley knife to cut a hole big enough, but not too big, to work in with a soldering iron. I even used the part I cut out to replace it back where it came from and used some epoxy glue to put it back in place!! I was apprehensive about doing it, but I learnt from the experience with the forums help.
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leewar
Senior Member
I'm a YaBB newbie!
Posts: 1504
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Re: ABS light staying on
« Reply #21 on: Oct 19th, 2009, 5:48pm » |
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The front abs sensors are the most difficult to get out as they usually rust in. More often than not, they break. If you can get the sensor out from the old one and the replacement hub , then it might work, but be careful. Soak in wd40 well before attempting the sensor removal. Try the old hub first Lee
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: ABS light staying on
« Reply #22 on: Nov 4th, 2009, 11:33am » |
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How do you get sensor out? Plastic just sits against the metal part of wheel hub. Doesnt move anywhere 
Should I twist it or just pull it straight out ?
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: ABS light staying on
« Reply #23 on: Nov 4th, 2009, 12:00pm » |
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In theory they pull out.
In practice they rust in and won’t move.
Try soaking in penetrating oil.
Some people say they had to drill them out.
They will twist, but may not survive.
Rather depends if it’s a good one or a duff one as to how much force you apply.
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ABS multiplug wheel sensor pins MK IV or MK 20
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: ABS light staying on
« Reply #24 on: Nov 4th, 2009, 12:00pm » |
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Tekno.
The front sensors are always corroded in,you have to bust em out!!In view of that it's favourite to change the hub and carrier AFTER first testing the sensor.
GOZZ.
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Tons_of_fun
Full Member
Mmmm...Xena !
Posts: 978
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Re: ABS light staying on
« Reply #25 on: Nov 4th, 2009, 12:42pm » |
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When i did my sensors i squirted WD40 all around it , every day for a week prior to changing. Still took me an absolute age to get the old ones out. LOTS of gentle wiggling  
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Lord...Sometimes im not that bright
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: ABS light staying on
« Reply #26 on: Nov 4th, 2009, 1:11pm » |
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I managed to turn it 45 degrees anticlockwise and also 45 degrees clockwise. Is that good thing
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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leewar
Senior Member
I'm a YaBB newbie!
Posts: 1504
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Re: ABS light staying on
« Reply #27 on: Nov 4th, 2009, 5:18pm » |
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it may just be the plastic cover turning, not the sensor itself. As Tons of Fun says, give it a real soaking over a period of time.
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: ABS light staying on
« Reply #28 on: Nov 5th, 2009, 1:38pm » |
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Plastic part detached but sensor is still in the hub. Wires are broken now
How do I measure abs sensors?
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: ABS light staying on
« Reply #29 on: Nov 14th, 2009, 3:25pm » |
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front sensors = 1k ohm.
Where is connectors for rear sensors?
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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leewar
Senior Member
I'm a YaBB newbie!
Posts: 1504
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Re: ABS light staying on
« Reply #30 on: Nov 14th, 2009, 3:51pm » |
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Hi Tekno Connectors for rear sensors under rear seat. Lee
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: ABS light staying on
« Reply #31 on: Nov 28th, 2009, 2:33pm » |
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Is is possible to check with OBD where faulty sensor is ?
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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tlundkvi
Full Member
Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: ABS light staying on
« Reply #32 on: Nov 28th, 2009, 2:58pm » |
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on Nov 28th, 2009, 2:33pm, Tekno wrote:Is is possible to check with OBD where faulty sensor is ?
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I think it should show up if the ODB software and lead supports it. I don't think it works with the "generic" odb mode.
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: ABS light staying on
« Reply #33 on: Dec 8th, 2009, 11:28am » |
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Just measured rear sensors. They are both very close to 1kohm. Do you know how much resistance can vary without affecting ? I remember front sensor had something like 800ohm left and 950 right.
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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