Land Rover Repair: ABS Light, circuit faults, cv joints

Question
Hello,
I have a problem with my ABS.
The problem started couple of months ago while My sister was driving the car. (discovery I 300 tdi XS 1996) while she was coming to the stop sign the ABS got activated; Few days later the car went for a regular service and when we told the mechanic about the incident, he suggested to flash the braking system. For couple days everything was functioning properly.  
Then this is what happened:
1.   Weird clicking noises were coming from the valve, the one that’s close to the ABS pump; We replaced the valve.
2.   The Master Cylinder developed a leak; replaced that too.
3.   I cleared the contacts of the master (engine bay) fuse box.
4.   Yesterday, the mechanic lift the car up and checked for anything loose; bearings etc; nothing was found.
5.   We use a computer to talk to the ABS computer; the result was wide gap and open circuit on both front sensors; we tried to clean it, but……
6.   Yesterday when I refueled the car I noticed that the weight was making a difference the brakes were working better and no light; weird
7.   Even with the ABS light on the ABS function SOMETIMES.   
All this is very strange to me.  The petal is kicking randomly. Any suggestions?
Regards,
Stelios


Answer
The light is on, so the ABS computer has faults to report to you.  If your present mechanic is equipped to interpret them, that's the next step.  You describe reading faults in step 5, but you do not say they are now clear.  That's what has to happen.  Clear the faults, and I imagine the brakes will work normally.

If the open circuit faults are still there you need sensors, cv joints, or both.

Good luck

John Elder Robison

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