Gerald in Sweden
Member Since: 07 Jul 2022
Location: Karlskrona
Posts: 45
  
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| Ticking/clicking after engine turned off |
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Sometimes when I turn off the engine and step out of the car I can hear a clicking noise near the underneath of the engine. I think that this might be related to an intermittent suspension fault. Sometimes, after the engine is turned off, the suspension sinks over time, especially the front right. Other times there is no sinking, even overnight, which is when I don't hear the clicking.
My suspicion is a poor electrical connection somewhere.
If I am right, where do I look? If not correct, does anyone have any other suggestions.
Thanks in advance
Discovery 3 2.7D 300,000 kms!
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 4th Nov 2022 5:23 pm |
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classic kev
Member Since: 12 Feb 2021
Location: Mold
Posts: 197
 
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Check the noise isn't your egr valves doing a cleaning cycle.
Suspension dropping says get busy with the spray bottle and washing up liquid and look for leaks. Plenty of info about this.
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| 4th Nov 2022 5:31 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10374
 
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Clicking can be the air values opening to release air from the struts. As requested by the computer.
What causes this you may ask? Possibly a faulty height sensor input. But which one!!
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| 4th Nov 2022 6:21 pm |
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Gerald in Sweden
Member Since: 07 Jul 2022
Location: Karlskrona
Posts: 45
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EGR?
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| 4th Nov 2022 6:24 pm |
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Gerald in Sweden
Member Since: 07 Jul 2022
Location: Karlskrona
Posts: 45
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classic kev wrote:Check the noise isn't your egr valves doing a cleaning cycle.
Suspension dropping says get busy with the spray bottle and washing up liquid and look for leaks. Plenty of info about this.
If there are leaks the suspension it would drop every time, which it doesn`t !!
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| 4th Nov 2022 8:11 pm |
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lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
 
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Does clicking eventually stop?
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| 4th Nov 2022 9:03 pm |
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Gerald in Sweden
Member Since: 07 Jul 2022
Location: Karlskrona
Posts: 45
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Ticking stops by the morning. By then the right front suspension is down to the stop. Some of the other corners have gone down a bit. Everything comes up to normal when I start the engine.
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| 4th Nov 2022 9:12 pm |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12721
 
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If you pull the suspension fuse whilst it's ticking, if it immediately stops then you're on the right track investigating suspension issue.
Could be something cooling down? Any fluid loss issues? .
Dean
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2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer  ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
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| 5th Nov 2022 9:49 am |
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Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
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It sounds like there is a problem with the front right height sensor, the EAS will try and level to whatever it reads as the height set, the clicking will be the EAS solenoids operating but it does sound like the height sensor isn't registering a height change which is why the valve block is being triggered many times.
Check the height sensor has free movement and the rubber isn't binding on the hanger on the upper suspension arm, if you have the 4x4i screen, see if there are any anomalies as you change the suspension height using the switch.
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| 5th Nov 2022 1:54 pm |
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Gerald in Sweden
Member Since: 07 Jul 2022
Location: Karlskrona
Posts: 45
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Hardware wrote:If you pull the suspension fuse whilst it's ticking, if it immediately stops then you're on the right track investigating suspension issue.
Could be something cooling down? Any fluid loss issues?
Good suggestion about the fuse, will try it in the next day or two.
Thanks for your reply
Last edited by Gerald in Sweden on 5th Nov 2022 8:09 pm. Edited 1 time in total
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| 5th Nov 2022 8:07 pm |
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Gerald in Sweden
Member Since: 07 Jul 2022
Location: Karlskrona
Posts: 45
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Flatlander wrote:It sounds like there is a problem with the front right height sensor, the EAS will try and level to whatever it reads as the height set, the clicking will be the EAS solenoids operating but it does sound like the height sensor isn't registering a height change which is why the valve block is being triggered many times.
Check the height sensor has free movement and the rubber isn't binding on the hanger on the upper suspension arm, if you have the 4x4i screen, see if there are any anomalies as you change the suspension height using the switch.
My D3 is 2006 so no 4X4i screen. Will check for free movement in a day or two.
thanks for the reply
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| 5th Nov 2022 8:09 pm |
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lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
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Year does not effect 4x4 screen, cars spec does, plus I believe it can be added with IID etc, but it is not really worth a toss!
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| 5th Nov 2022 9:36 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10374
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You need a display first 
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| 6th Nov 2022 9:01 am |
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Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
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lynalldiscovery wrote:Year does not effect 4x4 screen, cars spec does, plus I believe it can be added with IID etc, but it is not really worth a toss!
It is if it helps with suspension or steering angle sensor diagnosis.
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| 6th Nov 2022 10:52 am |
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Gerald in Sweden
Member Since: 07 Jul 2022
Location: Karlskrona
Posts: 45
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It is still a mystery. I haven`t followed up the suggestions yet. However the other day I put the car in my garage, and could hear no ticking after stopping the engine. The next morning the suspension was still up, all round. To my mind this rules out a leak. Today I cleared all the codes and will see what transpires in the next few days.
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| 12th Nov 2022 7:18 pm |
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