F

fluffy01016

New Member
Hi All

First time poster on the forum and hopefully I can get some inspiration from the memebers

I bought a L322 TD6 SE 6 months ago and the EAS was spot on. Lately I've been having issues where I get the dredded "susp inactive" and all the lights go out on the height adjuster. I've got a cheap OBDII reader that i've used to reset and it's been fine. My problem has got worse recently where it's been taking ages to change height. I decided to buy a piston repair kit and fitted it today. The old ring didn't look too bad but now it's fitted, it's still taking ages to change height. I've checked tonight and the accumalator is only at 4bar (I believe it should be nearer 13bar) and the compressot seems to cut off there. I can get it to increase slightly by using the OBDII reader to activate the compressor but no more than 4.5bar

Any help would be much appreciated
 
Sounds like a leak in the system.
Did you check/change the cylinder in compressor? Is it worn? If so fitting a new 'ring' won't increase the pressure.
 
kevwill said:
Sounds like a leak in the system.
Did you check/change the cylinder in compressor? Is it worn? If so fitting a new 'ring' won't increase the pressure.
Click to expand...

Thanks for the quick reply

I didn't change the head and it did look like there was a gap between the ring and barrel. If there was a leak, wouldn't the compressor just keep running?

Thanks again
 
fluffy01016 said:
Thanks for the quick reply

I didn't change the head and it did look like there was a gap between the ring and barrel. If there was a leak, wouldn't the compressor just keep running?

Thanks again
Click to expand...

If there is a leak in the system somewhere (even small one), then the compressor will be overworked as it is forever replacing lost air or topping up the system. This is usually reason why the compressor wears out.
Best to check air bags, lines etc before rebuilding compressor or you'll be doing it again very soon.
 
I've done some more checking and when the compressor is running, it gets to about 4.5bar and the a sudden hiss of air from the compressor assembly. I can't see where it's coming from but no I'm thinking that there's a blockage or something?? When I was looking at the compressor, I noticed a dial with H M L on it. Mine was set to M and I've turned it upto H. Not sure what it does though but didn't seem to make a difference
 
fluffy01016 said:
I've done some more checking and when the compressor is running, it gets to about 4.5bar and the a sudden hiss of air from the compressor assembly. I can't see where it's coming from but no I'm thinking that there's a blockage or something?? When I was looking at the compressor, I noticed a dial with H M L on it. Mine was set to M and I've turned it upto H. Not sure what it does though but didn't seem to make a difference
Click to expand...
Not much knowledge on the L322, but I seem to remember problems reported with a pressure relief valve.
 
There is a pressure release valve , but it's not in the compressor housing it's about 18 inches down the air line still in the spare wheel well , if its coming from there it can be removed and replaced by the plastic elbow which should be clipped to the multi plug. The release valve isn't needed and was only fitted as a precaution during manufacture. But I really suspect your compressor is knackered
 
Another update, the hissing is coming from the high pressure switch at the top of the compressor housing and in particular, the gold coloured cone. No matter what I do, the compressor will run for a few seconds and the the hiss and the compressor stops. I've dropped the pressure to 1.5bar to see how long it takes to hit the 4.5bar mark but it doesn't even rise above 1.5bar now?!?!? I can't see or hear any leaks in the bags but my biggest question is, why does the compressor shutdown at 4.5bar and vent through the high pressure switch?

I've checked the pressure releif valve but it's not leaking there (my spare plug is missing)

Thanks again in advance for suggestions
 
Now I think about it, I believe there is an upgraded muffler that you can get for around £40. Not sure if stealers sell them though. Try island 4x4
 
I've managed to get it upto 7.5bar. I lightly oiled all the valve/solenoids but the biggest suprise was the drier. The spring that holds it was mega rusty and the drier looks in need of changing. Not sure if the drier clogged would make much difference though??
 
fluffy01016 said:
I've managed to get it upto 7.5bar. I lightly oiled all the valve/solenoids but the biggest suprise was the drier. The spring that holds it was mega rusty and the drier looks in need of changing. Not sure if the drier clogged would make much difference though??
Click to expand...
It sure would on the P38, don't know on the L322.
 
Datatek said:
It sure would on the P38, don't know on the L322.
Click to expand...

Looks like a trip to the Landy specialist tomorrow for a replacement dryer. I ran it last night and it got upto standard height reasonably quick but then on the way back, it had a "hard fault" and my ODBII scanner listed it as "68-Unknown". Not sure what this fault code is (help appreciated) but when I reset it today, the pressure has got upto 8Bar before the temp cut off. I'll let it cool down before I see how far it will go.
 
fluffy01016 said:
Looks like a trip to the Landy specialist tomorrow for a replacement dryer. I ran it last night and it got upto standard height reasonably quick but then on the way back, it had a "hard fault" and my ODBII scanner listed it as "68-Unknown". Not sure what this fault code is (help appreciated) but when I reset it today, the pressure has got upto 8Bar before the temp cut off. I'll let it cool down before I see how far it will go.
Click to expand...


if you have got a cheapo or non range rover dedicated diagnostic bit of kit, chances are, it wont work properly with the car, hence your getting fault codes with no description.

when my pump packed up it did the same thing.

reset the fault, pump would come on for a short time, then would turn off and go into hard fault until it was reset again.

this was because the seals had worn in the compressor and it wasnt pumping anything

whats the date code on your existing compressor ?
 
The little gold cone is the exhaust silencer.

The original issue is it doesnt exhaust quickly enough, preventing correct height changes to take place, lowering mainly.

The mod is to fit the revised version which is freer flowing, or to drill the original.

+1 to Hippo, need LR specific diagnostics to read faults on the EAS correctly.
 
it seems to me (only seems) that the compressor is fine and building up pressure nicely. The high pressure switch seems to vent to early though. I stripped the compressor assembly just now and ran it and it was building up pressure but when it got to 8.2bar, i heard a woosh of air from the high pressure switch as if the soloniod had opened due to a fault. I would have thought that if this is the fault, then the pressure would have continued to rise until the requires pressure was reached?? HAving said that, even at 8.2bar, the truck wouldn't lift to standard height
 
At 8.2 barg there should be enough to raise the vehicle....I'd expect Standard Ride Height is in the 60-70psi range (4.1-4.8 barg)....
 
Well it's fixed!! Bought a new compressor to see if it works and it did. I couldn't find a replacement dryer and high pressure switch but got a good price on a new unit for £275+Vat. Gets to 11.8bar very quickly and will rise from access to high mode in 1min 20sec
 
fluffy01016 said:
Well it's fixed!! Bought a new compressor to see if it works and it did. I couldn't find a replacement dryer and high pressure switch but got a good price on a new unit for £275+Vat. Gets to 11.8bar very quickly and will rise from access to high mode in 1min 20sec
Click to expand...

Told ya so
 
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