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Car sinking overnight
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3
Car sinking overnight

Hi Guys need some help please, I keep getting the amber suspension light coming on and the car sinks on her bum overnight, I've had the codes read and have the following fault codes
  
Post #199183214th Oct 2018 8:39 pm
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

Time for an update guys, finally found the time to try an rectify this fault, took the N/S rear wheel of with the intension of removing the valve block, but found 2 broken wires where they had been rubbing on the wishbone. Tried to solder them back together, however the space was limit, and in the end put a patch in using choccy blocks, wheel back on, test run 8 miles and bong suspension fault, what next guys.


  
Post #199350320th Oct 2018 8:01 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4581

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Can you read the codes again, note down and then clear them. Drive for 10 mins, read again and post them here?
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #199350620th Oct 2018 8:16 pm
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

Ok had the codes read this morning this is what its flagged up, repairing the broken wires has cleared the valve block fault.

Took it for a run after codes cleared, got 2 miles and bong suspension fault.






So are the new codes telling me the compressor is on the way out, just gonna go out and whip the compressor cover off and check for any leaks.
  
Post #199382222nd Oct 2018 10:30 am
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

Just checked the compressor, end cap bubbling like a good un.
  
Post #199385322nd Oct 2018 12:44 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4581

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Difficult to see the codes! but if the dryer end cap is bubbling you will need to replace it as well as the desiccant and filters. If its A Hitachi compressor the caps develop a crack between the pipe connectors. Replacements are available online. When replaced, clear codes and drive it again for 10 mins, then read and post the codes again. Thumbs Up See if you cant get a closer shot of the codes!!
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #199385622nd Oct 2018 1:00 pm
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

Codes are,
C1A20 - Pressure increase to slow
C1130 - Air spring air supply
C1A33 - Rear left corner valve

Have just ordered the compressor repair kit
  
Post #199386722nd Oct 2018 1:57 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4581

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Seems you might have a valve issue as well but you need to sort the compressor leak first. Once tha'ts sorted lets see what codes show up then.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #199390822nd Oct 2018 4:31 pm
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

Update time, reconditioned the compressor and dryer and fitted the replacement metal end cap the original plactic one had a hair line crack and was leaking, checked system for leaks, found none, drove for 6 miles bong suspension fault.
Codes are,
C1A20 - Pressure increase to slow when filling reservoir
- Compressor exhaust (Can't remember the code)
C1130 - Air spring air supply

Your thoughts please.
  
Post #199453324th Oct 2018 5:40 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4581

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

C1A20 suggests a leak (air escaping faster than the compressor can replenish) Often, but not limited to its a minor leak in the reservoir! The code referring to the exhaust valve could be a sticky valve losing pressure. You should be able to see the operation on the diagnostics if its a decent one. Did you dismantle and clean all components when refurbishing the compressor? C1130 could be the valve or an air leak, but I would suggest resolving C1A20 before throwing parts at it!
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #199455424th Oct 2018 6:19 pm
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

I gave the compressor complete overhaul with the kit from Advanced Factors, piston rings, seals, filters the full works, I'll give the air receiver a good inspection in the morning as the car is now 11 years old could be suffering corrosion, as I know of a few cars of that age that have had new receivers.
  
Post #199459624th Oct 2018 8:16 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4581

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Crud can build up on the top causing pinholes, sometimes you can hear it. In live values the diagnostic tool should show you the exh valve closed 100% whilst compressor is building. Once the desired pressure is achieved the valve should momentarily open 100% and close again 100%. The other relevant components should also be available to inspect their operation in live values. You should also be able to witness the pressure fall with the leak!!
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #199460524th Oct 2018 8:35 pm
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

The latest is, got the system up to pressure, checking the air receiver for leaks and then hear a hissing sound coming from the front left wheel arch (passenger side), left it for a few minutes and the front left is sinking, started her up and she pumped straight up, now to find where the leak is.
  
Post #199476525th Oct 2018 10:28 am
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4581

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Well at least its progress Thumbs Up
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #199489425th Oct 2018 4:33 pm
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Stellaman
 


Member Since: 27 Oct 2013
Location: Melton Mowbray, Leicestershire
Posts: 52

England 2007 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

Air bag on the way out, new strut on order from AV.
  
Post #199489925th Oct 2018 4:46 pm
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