Thread: 3 Amigos dilemma??

IMHO you do not need to replace anything - just re-wire the shuttle valve as described in option 2 here:ABS Mod - Land Rover Club V.I. I did this last week after suffering a year of symptoms the same as yours. My lights have not returned after coming on daily - sometimes from startup & especially in hot weather.

Good luck

I know that this is a very good solution to fixing the shuttle valves but I really do have some reservations about rewiring the ABS.

My main concern is the possible police investigations or the insurance aspect. What would be the outcome if you are involved in a fairly serious incident, quite possibly a fatality, and the investigations that will follow up? Even if that wasn't the case and it was a simple mistake and your insurance found out that you have modified the braking system. Quick smart assessors know that these things can be modified cause they look at cars everyday of the week.

For a $120 fix for the shuttle valves I certainly would not be modifying any part of the brake system.

Its just not worth the grief.

Originally Posted by feral

For a $120 fix for the shuttle valves I certainly would not be modifying any part of the brake system.

I have the same symptoms as ADONUFF, I just live with the lights when they come on - quite random and intermittent. Shows up as an intermittent shuttle valve fault on the Nanocom. I'll get around to fixing the electrical gremlins one day.

The shuttle valve switch module was replaced in my 2002 TD5 not long before I bought it nearly 2 years ago - the problem went away for a few months but then returned.

The simplest fix (cheapest) is to replace the shuttle valve switch module BUT there is no guarantee that the problem won't return.

regards

Using HDC exercises the shuttle valves,about the only thing HDC is useful for on a D2.
Its good practice to regularly find a suitable hill and give the HDC a workout.
Andrew

I recently flushed my brake lines and modulator with new Dot 5(?) brake fluid. Its supposed to be for ABS braking systems. Mine was also coming up with shuttle valve fault. Anyway it seems to have worked 95% of the time. when they do turn up (three Amigos ) It seems to be when I get brake squeal. I'm hoping new pads will fix this.
So I recommend, do a full fluid flush and power bleed every 40,000 km.

Originally Posted by Zute

I recently flushed my brake lines and modulator with new Dot 5(?) brake fluid. Its supposed to be for ABS braking systems. Mine was also coming up with shuttle valve fault. Anyway it seems to have worked 95% of the time. when they do turn up (three Amigos ) It seems to be when I get brake squeal. I'm hoping new pads will fix this.
So I recommend, do a full fluid flush and power bleed every 40,000 km.

I have this done on a regular basis, and at around the same time as Zute does, just like I do the engine, diff, gearbox and transfer case as part of the regular service of the car.

The mechanic I use (Peter Davis) recommends it, he also recommends using the TC on a regular basis.

Baz.

Originally Posted by feral

I know that this is a very good solution to fixing the shuttle valves but I really do have some reservations about rewiring the ABS.

My main concern is the possible police investigations or the insurance aspect. What would be the outcome if you are involved in a fairly serious incident, quite possibly a fatality, and the investigations that will follow up? Even if that wasn't the case and it was a simple mistake and your insurance found out that you have modified the braking system. Quick smart assessors know that these things can be modified cause they look at cars everyday of the week.

For a $120 fix for the shuttle valves I certainly would not be modifying any part of the brake system.

Its just not worth the grief.

I agree about the insurance but I always ask myself what is safe? A 3 amigo fault in the middle of a crisis would I imagine be most unwelcome. I know now that this will not happen unless the shuttle valve does genuinely fail.

The problem is not with the shuttle valve but with the connector pins that are part of the modulator. You can change the shuttle switch all you like but the new one will be connecting to the same dodgy soldered pins in the modulator. It is therefore the modulator that needs to be repaired or replaced, not the shuttle valve. I confirmed this on mine by testing the continuity between the multiplug (pin 6) & the shuttle valve connector. If I wriggled the shuttle valve connector pins, I lost continuity due to bad soldering I presume. When you fit a new shuttle, you are disturbing the dodgy pins which may in some cases make contact again for a while.

Can anyone confirm that the new Wabco modulators have had this problem cured? Hummer seem to be having the same problem with the same part.

Hi all

Did a lot more klm's today and still no lights,I have cancelled the repair and will give the systm a bleed soon as I get time. Will just wait and see how it goes. Fingers crossed.

Andrew