ABS touble

[mattg]

sorry title should be Trouble.

As I am in the middle of giving the Brakes the once over. I have worked out the the ABS isn't working. as in it locks up. I believe I had a warp in the rotor. but I wouldn't think this would lock up the fronts if the ABS was working. Now I have worked out that the ABS light doesn't come on at ignition.

What are your thoughts? do you think the globe has been removed from the Dash?

cheers
matt

[mattg]

forgot to add the brake light is permanantly on.

cheers

[Franz]

sorry title should be Trouble.

As I am in the middle of giving the Brakes the once over. I have worked out the the ABS isn't working. as in it locks up. I believe I had a warp in the rotor. but I wouldn't think this would lock up the fronts if the ABS was working. Now I have worked out that the ABS light doesn't come on at ignition.

What are your thoughts? do you think the globe has been removed from the Dash?

cheers
matt
Matt,

Do the HDC and traction control lights come on when you turn on the ignition? If not, the globes may have been removed or the lights blanked out to disguise the 3 amigo's issue that are common on D2's.

Cheers,

Franz

[Pauly85]

yeah i had the same issue with mine, someone had removed the lense off of the instrument cluster, then removed the needles and dials, and put black tape over the 3 warning lights, can you imagine how happy i was to find this non factory accessory?

[mattg]

traction control light comes on and off again on ignition and flashes on and off as I would expect when it is doing it's job under rapid cornering. what is the HDC?

cheers

Matt

Matt,

Do the HDC and traction control lights come on when you turn on the ignition? If not, the globes may have been removed or the lights blanked out to disguise the 3 amigo's issue that are common on D2's.

Cheers,

Franz

[discolaw]

traction control light comes on and off again on ignition and flashes on and off as I would expect when it is doing it's job under rapid cornering. what is the HDC?

cheers

Matt
Hill Descent Control
Discolaw

[Riceburner]

Mines doing the same.

[Rudolf]

Mines doing the same.

As a first check.
See if the ABS system fuse is not blown.

[Riceburner]

Wheres the fuse? Engine bay or under dash?

[Rudolf]

Under Dash. F28 and 10A fuse on mine.

[Graeme]

Is the brake light the one for the handbrake, perhaps a faulty switch or poor adjustment?

The ABS pump working for TC suggests there's nothing wrong with the electrical workings of the ABS modulator but there are modulator valves (inlet valves) that could be stuck open due to very dirty fluid from never having been bled properly. Just because the ABS pump runs for TC (or HDC) doesn't guarantee there's pressure in the lines to operate the brakes.
Does the ABS pump run when the brakes are slammed-on on gravel?

[mattg]

No and they locked up on the dry road with the old worn tyres that were on it.

Fluid at the calipers is very clean and new looking. dose it need a power bleed to bleed the abs.

Should I take the modulator apart to clean up the valves before I bleed the brakes as I am in the middle of a caliper reco.

If so will I need any parts?

cheers

Matt

[Graeme]

Was the ABS pump running whilst the wheels were locked? I suppose it might be hard to hear with the wheels skidding.

Don't take the modulator apart to clean the valves. Do a power bleed (with the ignition off) with a wire with a spade connector on each end (or a lead with a switch on the end) in place of the ABS pump relay. This will run the ABS pump and draw fluid through all its valves as you open and close the bleed nipples. If there is dirty fluid it may take quite an amount of fluid to clean it up properly so be sure to keep an eye on the reservoir fluid level as is can be consumed quite quickly.

[mattg]

Thanks Graeme

I will do all of this when I get my new disks.... DBA out of stock for a week.

Has anyone used Dot5.1 brake fluid?

Cheers

Matt

[Hamish71]

yeah i had the same issue with mine, someone had removed the lense off of the instrument cluster, then removed the needles and dials, and put black tape over the 3 warning lights, can you imagine how happy i was to find this non factory accessory?

Thats almost more effort than fixing it....!

[wanglemoose]

Thanks Graeme

I will do all of this when I get my new disks.... DBA out of stock for a week.

Has anyone used Dot5.1 brake fluid?

Cheers

Matt

im using castrol super dot 4 (silver bottle protector series) wich is suitable for dot 5.1 aplications, when I replaced the shuttle valve switch with the falconworks kit i did a power bleed and the original repco dot 4 came out like foam where as the castrol was clear and foam free.
I could not recomend it enough, braking response stays firm to the point of the pads smoking and it will still stop on a dime.
hope this healps.
cheers
mick

[mattg]

im using castrol super dot 4 (silver bottle protector series) wich is suitable for dot 5.1 aplications, when I replaced the shuttle valve switch with the falconworks kit i did a power bleed and the original repco dot 4 came out like foam where as the castrol was clear and foam free.
I could not recomend it enough, braking response stays firm to the point of the pads smoking and it will still stop on a dime.
hope this healps.
cheers
mick

Hi Mick

What is the Falconworks Ki?

matt

[mattg]

Was the ABS pump running whilst the wheels were locked? I suppose it might be hard to hear with the wheels skidding.

Don't take the modulator apart to clean the valves. Do a power bleed (with the ignition off) with a wire with a spade connector on each end (or a lead with a switch on the end) in place of the ABS pump relay. This will run the ABS pump and draw fluid through all its valves as you open and close the bleed nipples. If there is dirty fluid it may take quite an amount of fluid to clean it up properly so be sure to keep an eye on the reservoir fluid level as is can be consumed quite quickly.

where abouts in the ABS Relay. I am up to bleeding the brakes.

CHeers

Matt

[biggin]

where abouts in the ABS Relay. I am up to bleeding the brakes.

CHeers

Matt

Try here.
http://www.aulro.com/afvb/discovery-2/81455-hi-all-first-post.html
There are also some other useful threads about this but I can't find them right now. Possibly in the Good Oil section.

[mattg]

Hi

Anyone found a shuttle valve cheaper then this?

Anyone used these guys with any success?

ABS Modulator Shuttle Valve Repair Kit | Brake Parts for Land Rover & Range Rover (http://www.roverparts.com/Parts/SWO500030.cfm)

Cheers

Matt

[Andrew D]

Matt

Try this site.

LAND ROVER DISCOVERY 2 ABS SHUTTLE VALVE MODULATOR on eBay (end time 26-Jun-10 17:07:01 BST) (http://cgi.ebay.co.uk/LAND-ROVER-DISCOVERY-2-ABS-SHUTTLE-VALVE-MODULATOR-/220612701858?cmd=ViewItem&pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item335d8aaea2)

There is also one in the USA. Link is somewhere in AULRO, possibly in the good oil.

Regards
Andrew

[Franz]

Matt

Try this site.

LAND ROVER DISCOVERY 2 ABS SHUTTLE VALVE MODULATOR on eBay (end time 26-Jun-10 17:07:01 BST) (http://cgi.ebay.co.uk/LAND-ROVER-DISCOVERY-2-ABS-SHUTTLE-VALVE-MODULATOR-/220612701858?cmd=ViewItem&pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item335d8aaea2)

There is also one in the USA. Link is somewhere in AULRO, possibly in the good oil.

Regards
Andrew
So, if Im getting the following Nanocom reading

11-05 Shuttle Valve Switch Electrical Failure (Intermittent)

is my best course of action to purchase a shuttle valve kit and install it or is there something else I should look at first?

Cheers,

Franz
2004 Discovery Classic Auto with mods

[discolaw]

Before making any decisions or spending any $ on sv kits have a good look at the Modulator Electrical Fault Repair item in The Good Oil.
Cheers
Discolaw

[Andrew D]

Matt

Look in here for a solution (as per Discolaw's suggestion). Option B is the favourite of most.

http://www.aulro.com/afvb/good-oil/34321-electronic-driver-aids-including-3-amigoes.html

Regards
Andrew

[mattg]

Thanks guys.

Turned out it was a dirty plug on the rear sensor. hit it with some contact cleaner and away we go. ABS is back.

do you think I should do the Modulator electrical fix as a matter of cause or now that it is working should I just leave it alone?

Matt

[discolaw]

Option B in the modulator fix deals with the common 3 amigoes problem where they appear intermittenly and can be cleared on restart. It is a wiring bypass of the fault and has worked for me. If the amigoes are on permanently it is more likely a sensor issue. Unless you are having the visiting amigoes problem you could leave things alone safe in the knowledge that an easy fix is there if needed.
Cheers
Discolaw

[Pedro_The_Swift]

The D2 "counts" the number of times the Amigoes show up,,,
after 258 (anyone?) the lights stay on regardless of reset.

[zzsteve]

Thanks guys.

Turned out it was a dirty plug on the rear sensor. hit it with some contact cleaner and away we go. ABS is back.

Matt
Is this a bit worrying if Nanocom says shuttle valve fault and the culprit was the sensor?
Steve

[discolaw]

The D2 "counts" the number of times the Amigoes show up,,,
after 258 (anyone?) the lights stay on regardless of reset.
No idea but I think there has been reference to this before. 258 is a odd number. Something to do with ecu memory counting capacity? In my case I put up with the problem for a fair while so should I go get a backlog of stored faults cleared?
Discolaw

[Fluids]

254.

Kev..