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4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 898

2000 Defender 110 Td5 XS CSW Epsom Green

ABS shuttle valve replaced and problem persists.

Guess what nightmare I worked on today.

Nanocom says shuttle valve been getting the two amigo lights on and off for a few years but always cleared and worked fine. Picked up a new shuttle valve in case some day it really failed. So last week the ABS came on while driving, low speed without touching the brakes at all .

Kinda scary but I also have the deactivate ABS switch kit installed from Pace so flicked that and all good no issues, just no ABS or TC available.

So I changed the shuttle valve and same problem is still there

damn!!! Before I go and do some spendy ($$$) stuff and buy more things I just want to be sure. I need a whole new ABS block (module) or at least a modulator kit SWO500040 to rebuild the block right?

Yes I have gone through many, many many posts and found no definitive answer. Thanks team

Let me know your thoughts. Cheers

Click image to enlarge

Click image to enlarge 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

25th May 2021 2:13am

MadTom

Member Since: 10 Sep 2013
Location: Olomouc
Posts: 572

Look for bypass of shuttle valve switch. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo

25th May 2021 8:10am

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 898

Thanks, I forgot about that. Can the shuttle valve cause the SBS to activate without brake pedal pressure? 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

25th May 2021 1:05pm

MadTom

Member Since: 10 Sep 2013
Location: Olomouc
Posts: 572

Yes, it the faulty joint in the ABS modulator is "disconnecting" because of vibrations of car, it can lead to malfunction of the brakes, because the ABS system is sensing the "brake pressure" from the shuttle valve switches output. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo

25th May 2021 1:11pm

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 898

Thanks a bunch for the explanation I’ll give it a go.

2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

25th May 2021 1:58pm

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 898

Update, pulled the shuttle valve again to do the bypass wiring and guess what? It has brake fluid on it

so looks as though I will need a new block and modulator. Any sources this excellent team can recommend which won’t make me weep at the cost. I’ll have to ship to Canada. Also I am currently looking for a wrecked D2 to see if I can get a decent used one.

Cheers and thanks. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

25th May 2021 5:58pm

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