C5 II slow first rise

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dulenator
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C5 II slow first rise

Post by dulenator »

Hi all!

I have an issue with the lazy suspension. :zzz: :whip1:
When the standard rising procedure is executed (opening/unlocking doors), I've noticed that it takes much longer for the car to rise to its standard riding height in the last few days.

The pump is working, but nothing happens for about 15-20 seconds and then goes up at the usual pace. After that, it is possible to get to the highest position without any issues.
Before, it would go up almost immediately after the pump started working.

There is enough fluid and I've gone through the bleeding procedure (to double check), so there should be no air pockets.
I see no leaks and the fluid level is correct and not moving a bit.

I don't know where else to look because everything seems to be ok and nothing has been done to the suspension lately.
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Re: C5 II slow first rise

Post by GiveMeABreak »

Car battery. If it's weak or in poor condition, then it can affect the electrical operation of the vehicle. As the suspension correction takes place on unlocking and causes the pump to operate on battery power, this can add to battery drain problems. So this would be my first thought, in the absence of any fault codes.

Although you may not have starting issues, if the battery is 5 years old or over, then it probably needs changing.
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Marc
dulenator
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Re: C5 II slow first rise

Post by dulenator »

The battery is new, replaced four months ago. The old one was bad, but it worked without issues, except that cranking was slow.
The new one is spinning the starter like there is no tomorrow and the voltage is good.

If any other solution doesn't come up, it is pump rebuilding/cleaning time! :spineyes:
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GiveMeABreak
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Re: C5 II slow first rise

Post by GiveMeABreak »

Well true, it is possible that the pump motor is suffering from carbon build up from worn bushes.... worse if there's any LDS that has gotten into it.
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Marc
dulenator
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x 8

Re: C5 II slow first rise

Post by dulenator »

I will not touch it until it dies completely because I don't have enough time on my hands right now, although it's probably the best time of the year...

The used ones are around 130€, so I will buy one of those, rebuild it, and wait for judgment day. :mrgreen:

Are there any differences between pumps? Almost everyone I found is advertising them as universal for C5 from 2000 to 2008.
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Re: C5 II slow first rise

Post by GiveMeABreak »

The part for the HP pump for your VIN is listed as 5277C1 (to be configured) or
5277C2 (for pre-configured from VIN).
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Marc
dulenator
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Re: C5 II slow first rise

Post by dulenator »

Thank you very much for the info!
It's time to burn some cash on our loved ones. 8-[
dulenator
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2005 C5 Estate 2.0 HDi Exclusive
x 8

Re: C5 II slow first rise

Post by dulenator »

I'm sorry for being a pain in the neck. :oops:

I have a new discovery!
It's not the pump but something else and I hope I will find out what it is. [-o<

This rise and fall issue is now really bad because the front falls within seconds and the pump is working overtime to keep the correct height.

But the new thing is hissing noise from the right front shock! There is a little bit of oil on the top of the shock, but nothing spectacular and that hissing sounds like air coming out!?
When I set the height in the middle or highest position, there is no hissing and the car stays up. :-k

Now I'm completely confused because and don't know if the shock is gone or something else because it stays up when lifted higher than standard ride height. Also, I can't pinpoint where the sound is coming from because it's impossible to get close to the shock from the sphere.

I found and ordered a used (cheap and good :)) pump, but I think I will also need a new shock(s)...
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GiveMeABreak
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Re: C5 II slow first rise

Post by GiveMeABreak »

You may well have one of the seals gone in the shock, or again it may be the hydraulic block - hard to say, but of course it won't do the pump motor any good having to work overtime to keep the fluid pressurised to suspend the car. This is going to lead to the motor overheating and blowing the fuse, so it needs investigating.

I would suggest keeping the battery disconnected (BSI Reset / Battery Disconnect / Reconnect Procedure) until you can sort out a suitable workshop / garage, so that the pump is not constantly trying to correct the height.
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Marc
dulenator
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Posts: 66
Joined: 08 Dec 2021, 21:44
Location: Belgrade, near Airport
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1989 BMW 320i Touring
2002 Fiat Doblo 1.9 JTD (loved but gone...)
2005 C5 Estate 2.0 HDi Exclusive
x 8

Re: C5 II slow first rise

Post by dulenator »

A suitable workshop/garage would be me (and my friend, if needed). :lol:

Yeah, I've disconnected the battery to save the pump.

Can you please give me part no. for the front shocks (VIN: VF7**************[VIN obfuscated, can be read by forum staff])?
I tried to find them in some of the shops in our country but without any luck.

At least there should be plenty of used ones on the market...
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GiveMeABreak
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C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
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GS 1220 Geranium Red
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Re: C5 II slow first rise

Post by GiveMeABreak »

No worries:
C5 MK II Susp.PNG
The left Strut is part: 5271H4
The Right Strut is part: 5271H5

Both no longer available from Citroen.
Please Don't PM Me For Technical Help

Marc
dulenator
Donor 2024
Posts: 66
Joined: 08 Dec 2021, 21:44
Location: Belgrade, near Airport
Lexia Available: Yes
My Cars: 1973 Chrysler Sunbeam (Hillman Avenger) 1300 - gone :(
1989 BMW 320i Touring
2002 Fiat Doblo 1.9 JTD (loved but gone...)
2005 C5 Estate 2.0 HDi Exclusive
x 8

Re: C5 II slow first rise

Post by dulenator »

Thanks a bunch!

I'll try to dig out a new part. If not, there are (probably) still good used ones out there...
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GiveMeABreak
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C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5646

Re: C5 II slow first rise

Post by GiveMeABreak »

Yep, unfortunately that's the way it's going, even the later C5 X7 is now suffering with parts issues for suspension, especially the pipes.
Please Don't PM Me For Technical Help

Marc
dulenator
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Posts: 66
Joined: 08 Dec 2021, 21:44
Location: Belgrade, near Airport
Lexia Available: Yes
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1989 BMW 320i Touring
2002 Fiat Doblo 1.9 JTD (loved but gone...)
2005 C5 Estate 2.0 HDi Exclusive
x 8

Re: C5 II slow first rise

Post by dulenator »

Just an update, if there is anyone interested in this topic. :-D

Because I had nothing to lose with the old shock, I tried to tighten the nut on the top (no. 10) and voila, it worked!
It seems that the nut has loosened itself a little because the hissing started after I hit one beautiful big pothole. :oops:

I bought used shocks, so I'll keep them for backup because they won't be any cheaper.
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GiveMeABreak
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Posts: 37005
Joined: 15 Sep 2015, 19:38
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My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5646

Re: C5 II slow first rise

Post by GiveMeABreak »

Good for you :wink: , lucky you have the old system as there's no repair on the X7 struts - it's a complete replacement.
Please Don't PM Me For Technical Help

Marc
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