More frequent 3 amigos with bad bumps...wheel sensor getting worse?

Thanks Andy - yep the new tyres really make her in the sand...she was nice with standard's but really great with the longer footprint and better tyre approach angle (and for that matter front end approach angle). I think the diffs are part of it, but also the front end of the IFS toyos hand lower as well...and they are fat (heavy) tubs of lard which doesnt help in the sand:) The gearing of the Discos are good too and that off idle torque is good.

Helped a poor german tourist out who hired an 80 series and was trying in vain to climb a steep soft sand hill about 100 metres long from eastern beach to Kingfisher/McKenzie....he kept telling me down the bottom that it was set up for sand....I kept saying the tyres are way to high and see you when you back down again...we did that twice and then I bolted on the gauge and 50 pounds all around...nice. Stauns on and down to 20 all around and told him third low and off he went like a happy camper all the way to the top.

The TCS got a nice workout on some axle twisters on some of the tracks and did itself proud.

Cheers

I wonder if that was my post that he read and it does not look like mine was a one off problem either

?????

Quote:

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Originally Posted by gazk

no sensor faults since I cleaned all the connectors.

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How did you go about this cleaning?

Hi, I disconnected all the plugs on the sensor leads and the connections on the ABS controller. Sprayed them with electrical contact cleaner then wiped them with a rag. The contact cleaner in a spray can is available from most automotive stores, DSE and Tandy. The contact cleaner is also good for flushing oil out of a TD5 engine harness and cleaning the ECU connections.

Just had a serious case of the 3 amigos. fault identified quickly by Range-Rov as a simple relay. very happy with that result:)
By the way they have moved from Mitcham to Rooks Rd Vermont

Quote:

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Originally Posted by LandyAndy

Hi Scott.
The beauty of a rover diff:cool::cool::cool::cool:
Those nissans and tojos have a substantialy bigger sized diff than yours that works just like an anchor in the sand.
Great to see the D2 excelled itself for you in the sand.
ENJOY
Andrew

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Diff, na.
Think it is more like the stupid position of the Cruiser spare tyre, AND the full width bulldozer blade trying to level the track that is commonly known as the Independant Front Suspension guard on the 100. :D

That IRS is terrible for clearance - and the dragster rake on them doesnt help once they start to plough.

I did take off the connector to the modulator and gave it a spray with contact cleaner before I left and also pressured hosed the brakes before I left...never missed a beat at Fraser and the lights have not come on since despite racking up several thousand ks and on some very bad corrugated roads and with crap shock absorbers.

Cheers

hi everyone
sorry i have been away and unable to reply.
the connector shown on page 6 of the following article was the connector at fault. http://www.hummerknowledgebase.com/brakes/absmod.pdf

When i got my car I had an ABS wheel speed sensor fault. I had codes read and cleared and everything was fine. When this sensor would cause a fault 3 times the 3 amigos would remain illuminated all the time.

About 3 months after that I had the 3 amigos come on again, this time however they would disappear when the car was restarted. This went on for some weeks until I took the car to have the faults read. The fault was an ABS shuttle valve fault.

The SLABS computer constantly runs voltage (excuse my non technical explanation here) through the shuttle valve switches to make sure they are connected and functioning. If the connection to the shuttle valve switches is broken, the computer will detect a shuttle valve fault and log it in the computer and show the 3 amigos. Upon restart the amigos will have gone away.

Land rover began replacing modulators but the fault came back.
Land rover then replaced shuttle valve switches but the fault came back. Why? because they were replacing perfectly good shuttle valves with new ones.. but they were still plugging into the same dodgy connector within the modulator (shown on page 6 of the article).

Why do these often go off when we go over bumps? because the vibration causes the connector inside the modulator to move and break the connection - hence off go the 3 amigos.

There are several ways to rectify this - remove the modulator, pull it to bits and then repair the connector. The way I chose to rectify it was to lift up the modulator whilst leaving the brake lines connected, remove the shuttle valve switches, re-route the 2 connecting wires outside the modulator to the factory wiring loom which goes into the main connector on the modulator - hence bypassing the dodgy connector inside the modulator.

That was 5 months ago, I have not had the 3 amigos come on again. My brake pads are wearing low now and have begun squealing (for about the last 1500km)... they squeal and i go off road over bumps and down corrigated roads and no 3 amigos.

As for the other info in that article re bleeding brakes, i cant give any advice on that as we didnt need to disconnect my brake lines as the gentleman who wrote the article was spending alot more time dissecting the modulator - i posted the article as a reference as it gives good pics of where the fault lies and a reasonably good description of how to test for it.

Hope this helps
Drew

Hi guys, alot of info here that's for sure. I am now confused.

Whilst I have a general understand of things the ability to do it myself requires exact instructions hence my following request!

Have been getting the 3 Amigos on and off over the past month. Turn car off problem cleared. Seems to come on under braking, particulalry in the wet.

Range Rov called today saying that the fault coming up is shuttle valve switch failure, approx $1800 fix. Jamie and the guys at Range Rov have always looked after me and done a good job, however I don't have $1800 large to throw around at the moment.

Reading all the different posts there seems to be a simple cheaper fix, one that I would like to persue.

Can anyone recommend how I go about fixing a shuttle valve switch failure myself?

Any help/advise/instructions would be so very much appreciated.

I know it sounds funny with a disco but I like everything to be working 100%:D

Cheers
JB.