Thread: The leaning tower of landy

They really lean to the left or right occasionally!!! Although maybe not in this case. When a height calibration is attempted, error codes are thrown!!

The resolution!!!! Identify and replace defective height sensor!

Hi

Obviously she used to sit straight and true and yes it is parked in the garage on a flat concrete floor.

My measurements are close enough to show that both the front left and rear left sank overnight at the same rate.

The front right sank by maybe 5mm but it is very minor and the rear right stayed at the same height.

The truck does not get a lot of use as I use my D1 as my daily runner so i am sure I haven't been offroad and damaged anything.

Could there be a leak at a valve block that supplies the left hand side?

It would seem logical that if an airbag had a leak it would affect only one corner but is definitely dropping on one side i.e front and rear.

It would also seem logical that it isn't computer related as she sank with the battery disconnected.

A local garage has put it on their analyser (not a landy agent) and he can't read the left rear sensor...is there a clue there?

Graeme

That could be a clue. I would be suspicious if he can read all the other ones. You might also carefully check / feel / inspect the air lines for chafe or wear. Start on the front one. Particularly where the airline is nearest the heat shields. Under the hood, there are some lines, on the Left hand drive, there is a potential chafe point where the airlines pass into the box, through a rubber grommet. There is also some kind of air connection box there.

Perhaps some soapy water and maximum air pressure (off road height) might also turn something up.

The lines near the spare battery box are shown in the attached thumbnail and shameless Traxide plug. I would not stress this as a likely place, merely a place to look at. You will see the lines on the left, and behind the battery.

The other area to pay attention to are the Valve blocks.

The attached diagram may help out of the service manual.

There is a front valve block and a rear valve block, not 1 for each side. The airspring valves are closed unless the system is raising or lowering so air can't flow along 1 side of the vehicle without there being 2 faulty valve blocks. I suspect there are 2 leaks but perhaps only 1 at the front. The front valve block is on the RHS in line with the wheel and the rear is behind the left rear wheel.

I'm heading over to Tauranga to see if they can sort my suspension out on Tuesday but I notice that after one night the truck drooped to the left by the usual amount of 20mm but after leaving it the whole truck had settled evenly over all four wheels with approx 400mm between the wheel centre and the wheel arch.

It was left in offroad height so the whole system settled over the two nights..

Any clue there?...does your D3 settle when left for a few days?

Thanks

Graeme

The vehicle will periodically re-level downwards so if 1 corner is loosing pressure then the whole vehicle should progressively go down, at least to some extent.

The last time I had it sit long enough (in a cold environment) it was about 2 weeks to the bump stops. I was a bit alarmed when I saw it, but fired it up and it pumped up, and there has been no problems.

SOME settle is normal. I am sure you prefer to fix it rather than throw parts at it. I normally carry spare height sensors and so on in the spares kit. If you considered such a kit, then some easy swapping out might get your kit started and your problem resolved.

Write up and pictures here: DISCO3.CO.UK - View topic - Upcoming project

Thanks unseen one!!...I have found a copy of the workshop manual and read that after 2 hours the car will assess whether it is balanced and again after 6 hours so that is why it will settle if one particular corner is lower than the others..

What a great spare parts list but I see in the manual you have to recalibrate the suspension after changing a sensor..have you tried changing one to see what happens?

When we came over last winter I just had the obligatory light bulbs as well as filters and belts.

I will look at your kit and decide what I should source b4 we come back later this year.