C5 Tourer front suspension dropping overnight

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MadMax7890
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Joined: 17 Nov 2021, 17:02

C5 Tourer front suspension dropping overnight

Post by MadMax7890 »

Hi, I have had Citroens for many years, and still have my favourite Xantia. However, my question today concerns my C5 Tourer.
I bought this low mileage car recently, and have since changed the front struts, partly due to oil leakage, but also believing that this would stop the front of the car sinking to the ground overnight. I have had series 1 and 2 C5 estates in the past, and none have done this.
So, having replaced the front struts (with new Citoen replacements!) what's next?

The front of the car STILL drops to the ground overnight. NO oil leaks.

Are all the valves which might be a problem etc in the pump assembly, or are they hidden away somewhere else?
I would be grateful for advice. The car has only done 22k!!!! All my other (more reliable) Citroens had covered appreciably more miles, with no issues at all. Thanks! Jim
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GiveMeABreak
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Re: C5 Tourer front suspension dropping overnight

Post by GiveMeABreak »

It might be worth checking the electrical connector to the BHI on top of the electropump. If LDS fluid gets in it can cause problems. I'm thinking that the exhaust electrovalves may be playing up, therefore allowing the fluid to return more quickly than it normally would. This may also have the effect of the pump working more frequently than it needs to under normal operating conditions.

If you have Diagbox, it may well be worth checking for a fault code - or checking the live data from the suspension ECU - there are electrovalve tests that can be performed that may help.
MadMax7890
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Joined: 17 Nov 2021, 17:02

Re: C5 Tourer front suspension dropping overnight

Post by MadMax7890 »

Hi! Thanks very much for your response. I have an OBD reader, but not a Daigbox. I assume that, other than cleaning the electrical connector with connector cleaner (which I have) the electrovalves are a "no go"?
Cheers, Jim
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GiveMeABreak
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Re: C5 Tourer front suspension dropping overnight

Post by GiveMeABreak »

It depends on the issue - and hence why some further diagnostics are needed. Electro valves can be tested with Diagbox but highly unlikely with a generic OBD reader. It may help determine if it's an ECU / electrical issue concerning the electrovalve commands - which is why I suggested cleaning up the BHI electrical connections first.
MadMax7890
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Joined: 17 Nov 2021, 17:02

Re: C5 Tourer front suspension dropping overnight

Post by MadMax7890 »

Thanks again for your interest and support. I will try the easy option first! Cheers!