L322 Front Suspension has mind of its own

My 08 322 seems to have a bit of a minfmd of its own on the front suspension.

When pulling away and somtimes on tight turns the front suspension seems to rise to full height for a few seconds then drop back yo normal height, this nay happen at other times but I have not noticed it.

This seems to be resulting in scrubbing the outside edges of the front tyers.

My 1st hunch is somthing sticking in a valve block.
On 2 other occasions in very cold weather when having just started the car the front rose to full height then after a minute or so dropped to normal height, at the time I passed this off as temperature related.

Has anyone had this and or any thoughts / advice?

Needs diagnostics, could even be a height sensor.

anything specific I should be looking for?

chu017 said:

anything specific I should be looking for?

Click to expand...

Height sensor readings in live data for starters and any other anomalies. If you are right about a sticky valve, then I suspect nothing will show up.

Datatek said:

Height sensor readings in live data for starters and any other anomalies. If you are right about a sticky valve, then I suspect nothing will show up.

Click to expand...

I will record some values when I go out later.

I looked at faults in Gap IID but the only thing vaguely related is below. not sure how this might relate to my symptoms.

As above log some data.
Valves and sensors.
That fault could be either the beginning of a leak or a weak compressor. or possibly a blocked valve to the tank.

Need to check but thought the suspension is inactive on acceleration and some cornering conditions.

J

chu017 said:

I will record some values when I go out later.

I looked at faults in Gap IID but the only thing vaguely related is below. not sure how this might relate to my symptoms.

Click to expand...

That looks like a weak compressor.

Or believe it on not a corner valve stuck open.



J

Datatek said:

That looks like a weak compressor.

Click to expand...

I agree, but a weak compressor would not be causing the issue listed in my 1st post.

I will see what live data from a drive shows me later on.

marjon said:

Or believe it on not a corner valve stuck open.

View attachment 283601

J

Click to expand...

That is excellent info Thank you.
where is that table from?
a valve stuck open could result in a rise to full height then unsticks so it drops i supose.
This does seem the be front both sides so 2 corner valves stuck ?

either way that would be front valve block?

chu017 said:

That is excellent info Thank you.
where is that table from?
a valve stuck open could result in a rise to full height then unsticks so it drops i supose.
This does seem the be front both sides so 2 corner valves stuck ?

either way that would be front valve block?

Click to expand...

That's from my 2011 RR files but the faults line up across the range. I find it easier to navigate than the other manuals covering earlier years.

But plenty available manuals online free, That would cover yours.

There is also a "cross" valve in the front too, not exactly sure how that could affect things though.

If its 2 stuck maybe you have a wiring/corrosion issue to the front block.

See what your live data looks like.

J

I am trying to work out how to export the log from Gap IID to my PC / excell etc.