Checked voltages and speed readings under 5mph and they all seem to be giving out similar readings ( 2.5v ). Will have a bit more time next weekend so will get the the vehicle up on axle stands and remove the wheels to make access a little easier.

2001 4.0L P38 County. Vehicle has been sorned for the past 18 months and has been parked undercover with the battery on a maintenance charger and a dehumidifier running in the cabin. Finally got around to getting it ready for a mot last week. Jobs done were, nearside upper and lower ball joints...

I was quite surprised when I took it to bits that it was so complex! I expected a simpler piston type design. I suppose for the operation of the abs and traction control to work correctly you need more control / separation of the flow for each wheel.

The seals ( perhaps I should have used the words O rings? ) are to seal various parts of the abs piston.

Yes that’s the guy! His website is rangeroversolutions.com

Got them a few years ago from a guy in Australia ( strange but true ). I will try to find his details

2001 4.0L. Has had a very occasional hard brake pedal. I initially replaced the accumulator, then tried a used abs pump but the problem would still reappear. Took it off the road this spring to get a long list of small jobs done. Rear brake lines had been replaced at some point, but as they...

Managed to spend some time on the p38 today. Found an old ABS ecu in my treasure trove of stripped parts from a donor vehicle. Swapped it over and all faults gone. Haven’t managed to take it for a test drive yet as there is 5 tonnes of driveway gravel in front of it ( job for tomorrow )!

Thanks for that Flossie. Electrical diagnostics aren’t really my thang? So any ideas are gratefully recieved! Saturday afternoons are my allotted p38 time so as soon as the working week is over I will get the multimeter out and swap some sensors over to see if the fault moves around.

Not had time to get out and do any work on it yet. Awaiting delivery of some electrical contact cleaner and then I will get back on it again.

Had some time to get some readings and each of the abs sensors are reading about 980 ohms. Have checked voltage to each sensor and each one is registering 5v. Have just checked continuity from the sensor plug to the connector that plugs into the abs ecu and the readings are all constant at 1.3...

Any recommendations for abs sensors ( front and rear ), prices seem to range from £30 to £400? Have just replaced rear brake lines and after a test drive now have traction failure and abs lights on. Nanocom says rear sensor electrical failure rear right and sensor voltage page says no voltage...