C5 Front Suspension Does not Raise
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  1. #1
    Fellow Frogger! kimmo's Avatar
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    Default C5 Front Suspension Does not Raise

    Now when the Cx Prestige is finally going the C5 is dead!

    The front suspension does not raise anymore. Rear raises fine and the power steering is also fine. The pump is working hard to try and raise the front but gets it up by couple of inches and then drops again. I have filled the LDS reservoir so it is not the case of running out of orange juice.
    The problem occurred when I returner to the car in the evening to drive back home. On the way to work in the morning everything was fine.


    I guess it could be a fault in the height sensor (corrector in the old money) or a blockage in the hydraulic pipes.
    I don't know how to test the electric height sensors. I suppose I could poke it with the multimeter and get readings ???
    Checking the lines for blockages would involve removing the BHI (?) unit and I would not like to go there before counting the height sensor fault out of question. It is possible it is a blockage because I had a blown sphere (yep, a dead dual diaphram one) few weeks ago and it may have injected pieces of the diaphram in the system

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    C5 Touring 2008, CX 2400ie Prestige '81 (with dead gerbox), CX 2400 Pallas C-Matic '80, CX2400 Super Familiale C-Matic '79 (to be scrapped very soon) , CX2400i Familiale 5-spd (to be scrapped), GS 1220 Wagon '78 (next project), ID19 '64
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  2. #2
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    Default C5

    Hi,
    A while back I had a problem with my height. Exactly the opposite though. Stayed up at the rear.
    To cut to the fix. I put it up on ramps etc disconnected the battery, and looked at the height corrector. Nothing obvious, whatever that could be. So I played with the connections and when restarted it went straight to correct height. So I repeated the procedure with a bit of WD and a good check of the connectors. Nothing obvious found but been good since.

    I guess its possible there could be a blockage but why assume the worst. There is a manual bleed on the valve. Proceed with caution of course.
    Good luck
    Jaahn

  3. #3
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    Default

    Probably a height sensor issue, but possibly could be a failed valve in the BHI if it keep on running but can't raise it. Might be one for a dealer / specialist?

    Do not overfill the reservoir or you are likely to cause it to rupture. Roughly, it should be filled to the seam in the tank when it's set at low position. There is a more formal way to check the level, but this is good enough at home. Forget what you know about checking the level on any car with LHM.

  4. #4
    Fellow Frogger! kimmo's Avatar
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    Default

    Hello, I carried out some further investigations today. I unplugged the return hose coming to the reservoir and there was an awful lots of LDS coming back to the reservoir when the pump tried to lift the front. I would expect only a drip of oil coming back ???
    I unplugged the left side return hose from the strut and as far as I can see (throught the spray of fluid) there was lots of fluid coming back from the strut. On the right side the flow was much more moderate.
    Would it be possible or likely that the front strut has developed such a severe leak that the system can't provide enough pressure to lift the front. If I lift one side up with the jack then other side will follow slowly.
    C5 Touring 2008, CX 2400ie Prestige '81 (with dead gerbox), CX 2400 Pallas C-Matic '80, CX2400 Super Familiale C-Matic '79 (to be scrapped very soon) , CX2400i Familiale 5-spd (to be scrapped), GS 1220 Wagon '78 (next project), ID19 '64
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  5. #5
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    Yes, internal leaks do happen on C5 struts. Look for a used one.

  6. #6
    1000+ Posts gerry freed's Avatar
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    The steering has nothing to do with it.
    Think Global - Ride on Spheres

  7. #7
    Fellow Frogger! kimmo's Avatar
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    Default

    Maybe I should get a C5 wreck in the yard as a parts car
    Swap parts from a working one - the best way to fix the faults like these.
    C5 Touring 2008, CX 2400ie Prestige '81 (with dead gerbox), CX 2400 Pallas C-Matic '80, CX2400 Super Familiale C-Matic '79 (to be scrapped very soon) , CX2400i Familiale 5-spd (to be scrapped), GS 1220 Wagon '78 (next project), ID19 '64
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  8. #8
    Real cars have hydraulics DoubleChevron's Avatar
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    Default

    Quote Originally Posted by kimmo View Post
    Maybe I should get a C5 wreck in the yard as a parts car
    Swap parts from a working one - the best way to fix the faults like these.
    Good luck finding a parts car for PSA made cars. It works for early stuff (eg: CX brakes.... you can use 1976 brake rotors on any model or variety from 1976 -> 1989 regardless of the motor fitted). Bloody poogoe, just look at the XM, different struts, different brakes...... I don't get it, just 'cos the motor is slightly smaller, how can it save money fitting smaller suspension and brakes You end up with endless varieties for no good reason. If you find a C5, you'd want to find the same year, same build date and exact same model as the car you want it to be parts for

    Then again, maybe poogoe finally found some common sense by the time the C5 arrived and listened to any Citroen engineers left in the company........................................... ..........

    seeya,
    Shane L.
    'Cit' homepage:
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  9. #9
    Fellow Frogger! cme2c's Avatar
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    Default

    Quote Originally Posted by DoubleChevron View Post
    Good luck finding a parts car for PSA made cars. It works for early stuff (eg: CX brakes.... you can use 1976 brake rotors on any model or variety from 1976 -> 1989 regardless of the motor fitted). Bloody poogoe, just look at the XM, different struts, different brakes...... I don't get it, just 'cos the motor is slightly smaller, how can it save money fitting smaller suspension and brakes You end up with endless varieties for no good reason. If you find a C5, you'd want to find the same year, same build date and exact same model as the car you want it to be parts for

    Then again, maybe poogoe finally found some common sense by the time the C5 arrived and listened to any Citroen engineers left in the company........................................... ..........

    seeya,
    Shane L.
    You are a funny man, Shane. Replacing parts on any Peugeot made this century requires the VIN. 2 apparently identical cars made a few months apart can have non interchangeable parts. The words "modern Peugeot" and "common sense" do not belong in the same sentence.
    206 GTi 2003
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  10. #10
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    Look for a similar car at a salvage auction. Yes, there are changes, but a lot of major parts are common from 2001 to 2008. For your car, you probably want a 2003-2004 HDi to give you the most common parts. Earlier cars have different crank/cam adjusters, alternators and the air intake layout. The best way to be sure is to compare the part numbers for your VIN and a donor VIN via Citroen Service. It takes little to write off an earlier car these days, so you can find a salvage car with relatively little damage. Even better, keep your eye out for a clean car with just a dead gearbox.

  11. #11
    Real cars have hydraulics DoubleChevron's Avatar
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    Quote Originally Posted by David S View Post
    Look for a similar car at a salvage auction. Yes, there are changes, but a lot of major parts are common from 2001 to 2008. For your car, you probably want a 2003-2004 HDi to give you the most common parts. Earlier cars have different crank/cam adjusters, alternators and the air intake layout. The best way to be sure is to compare the part numbers for your VIN and a donor VIN via Citroen Service. It takes little to write off an earlier car these days, so you can find a salvage car with relatively little damage. Even better, keep your eye out for a clean car with just a dead gearbox.
    There's a couple for sale at the moment with dead 'boxes. There's also a "bargain" on ebay with a different colour bootlid and upside down chevrons That car you wouldn't take for $500, let alone $5000.

    seeya,
    Shane L.
    PS: Get rid of the PSA made thing and get your wife a nice CX turbo
    'Cit' homepage:
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    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


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  12. #12
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    Default Leaks!

    Quote Originally Posted by David S View Post
    Yes, internal leaks do happen on C5 struts. Look for a used one.
    David,
    What causes these leaks. Wear or a failure of some sort. Any details available for reference.

    I had an opportunity to purchase a written off C5 a while back for $800 which had a very light side swipe and only 80Kkms. I looked up the Citroen site put in the VINs and compared the spec on that car and mine and they were allmost identical except for the colour. This is easy to do and you can print it out for perusal.

    I decided that as it was allmost identical it probably had all the same problems and seeing as I had fixed all mine there was no point. The wrecker was not amenable to discussion either.(I think it went to scrap) If i wanted a car that needed a parts car I might look elsewhere

    Jaahn

  13. #13
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    They are sealed units, but you'd imagine a seal has worn or failed. I doubt it's a very common fault, but it obviously happens, as it can with the Xantia. The rear cylinders can be dismantled. That $800 wreck would have been OK if you had space for it, but you may never have used most of it. You could probably have sold a few bits from it to cover the cost and had the rest for free.

  14. #14
    Fellow Frogger! kimmo's Avatar
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    I am getting a whole suspension strut assy from the wreckers in NSW. Let's hope it fixes the problem. Considering there is also a hissing sound coming from the left side when it tries to pump the suspension up should be a sign that it is a leak in the strut. Fingers crossed...

    My wife does not get in to a CX so I can't have a CX only fleet....
    C5 Touring 2008, CX 2400ie Prestige '81 (with dead gerbox), CX 2400 Pallas C-Matic '80, CX2400 Super Familiale C-Matic '79 (to be scrapped very soon) , CX2400i Familiale 5-spd (to be scrapped), GS 1220 Wagon '78 (next project), ID19 '64
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  15. #15
    Fellow Frogger! kimmo's Avatar
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    I got the new front strut yesterday and quickly installed it in the morning. Seemed to have fixed the problem. Can't believe I have fixed something in c5.

    Sent from my GT-N7000 using Tapatalk 2
    C5 Touring 2008, CX 2400ie Prestige '81 (with dead gerbox), CX 2400 Pallas C-Matic '80, CX2400 Super Familiale C-Matic '79 (to be scrapped very soon) , CX2400i Familiale 5-spd (to be scrapped), GS 1220 Wagon '78 (next project), ID19 '64
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    Default Good result !

    Hi Kimmo
    Good result. Thanks for telling us the result.
    We C5 owners have to stick together as Citroen only wants our money
    If it was mine I would cut the leg open and have a look to see what happened but I'am a bit odd like that.
    Jaahn

  17. #17
    Fellow Frogger! kimmo's Avatar
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    Default This is bad!

    It looks like the new strut has gone bad as well. I did the return line leak test this morning. Disconnected the drivers side return line, connect the battery and let the pump start - only couple of drops oil coming out. Good. Then the passengers side where the new strut is. The same procedure and I get a steady flow of fluid coming back regardless of the suspension height.
    I am more than puzzled on how the strut can go wrong in such a short time of use. I drove the car only few times when I got it fixed back in June. I lost enthusiasm for fixing it but need to get it done now because the CX desperately needs work doing.
    I took the top off from the original strut. There are some scratches in the piston rod. I haven't taken the other one off yet to see if it has got the same problem.
    C5 Touring 2008, CX 2400ie Prestige '81 (with dead gerbox), CX 2400 Pallas C-Matic '80, CX2400 Super Familiale C-Matic '79 (to be scrapped very soon) , CX2400i Familiale 5-spd (to be scrapped), GS 1220 Wagon '78 (next project), ID19 '64
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  18. #18
    Fellow Frogger! kimmo's Avatar
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    Default Re: C5 Front Suspension Does not Raise

    Any ideas why this would happen?
    C5 Touring 2008, CX 2400ie Prestige '81 (with dead gerbox), CX 2400 Pallas C-Matic '80, CX2400 Super Familiale C-Matic '79 (to be scrapped very soon) , CX2400i Familiale 5-spd (to be scrapped), GS 1220 Wagon '78 (next project), ID19 '64
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