F40 adjustable suspension fix-help! | FerrariChat

F40 adjustable suspension fix-help!

Discussion in '288GTO/F40/F50/Enzo/LaFerrari/F80' started by stradman, Mar 19, 2008.

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  1. stradman

    stradman Formula 3

    Jan 8, 2004
    1,284
    London UK
    Full Name:
    Stradman
    #1 stradman, Mar 19, 2008
    Last edited by a moderator: Sep 7, 2017
    Hi guys,

    Unfortunately my adj. suspension has malfunctioned and the car won't go up and is stuck at the lowest level. I spoke with a couple of tech guys here and they sent me the following tech information notification which describes why the problem arises and how to get around the problem. As you will read, it involves shorting the switches on the control unit connector which resets the switches and clears the control unit memory. Now all I have to do is find the flippin control unit! I think it is behind the passengers seat so I suppose I have to remove the panel to the engine bay. I havent had time to go down and look but does the panel come out fairly easily? I havent removed this before. Is it a hassle? I know some of you do it routinely. Any tips?

    The problem is I cant get the car out of the driveway until the suspension rises. Otherwise I will scrape the whole of the underside of the car in this position(I know it will as I attempted-so had to reverse smartly!)
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  2. SSNISTR

    SSNISTR F1 Veteran

    Feb 13, 2004
    8,046
    SFL
    Hey man, do a search. If I recall a month or two ago there was a thread about how to fix this. Good luck!
     
  3. malcs

    malcs Rookie

    Nov 4, 2005
    1
    Hi

    The ecu you are looking for is in the front compartment and not in the engine bay its the black ecu that sit's next to the brake and clutch fluid reservoirs on the left hand side of the car. If your not sure were i mean you know were your screen wash fluid reservoir is well its directly oppiste that on the other side of the compartment i hope that helps
     
  4. UroTrash

    UroTrash Four Time F1 World Champ
    Consultant Owner

    Jan 20, 2004
    40,469
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    Clifford Gunboat
    I have nothing to contribute to this thread...but I think it is mind boggling to tell a F40 owner to "Do a search man!" as if he was a Civic owner asking about installing Lambo doors.

    Damn!
     
  5. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,216
    Mount Isa, Australia
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    Pap

    Nice 1st post. :):)

    3 years in the making! :p:p
     
  6. SSNISTR

    SSNISTR F1 Veteran

    Feb 13, 2004
    8,046
    SFL
    Oh come on, I didn't mean it like that! I was tring to help him out.


    And what difference does it matter if he owns an F40? You're saying you should talk nicely to a F40 owner and talk down to a Civic owner?


    That sir, is not cool.


    Anyway, here are a few I found. Not sure any are any use to you.

    http://www.ferrarichat.com/forum/showthread.php?t=69626&highlight=f40+adjustable+suspension

    http://www.ferrarichat.com/forum/showthread.php?t=59883&highlight=f40+adjustable+suspension

    http://www.ferrarichat.com/forum/showthread.php?t=72719&highlight=f40+adjustable+suspension
     
  7. UroTrash

    UroTrash Four Time F1 World Champ
    Consultant Owner

    Jan 20, 2004
    40,469
    Purgatory
    Full Name:
    Clifford Gunboat
    F40: On a Ferrari board, in the supercar section, yes, an F40 owner should be show deference.

    Civic: No, you need not talk down to anyone.
     
  8. A_SINGER

    A_SINGER Karting
    BANNED

    Mar 19, 2008
    55
    The adjustible suspension was only available on the european cars - I think Ferrari may have abandoned the idea as it was always troublesome and most people have removed it by this time. It was a good idea and made the F40 more usable - the problem was that it would stick in the down position making it unusable. There are people who no there way around it but most of em would be in europe where the cars were sold.
     
  9. SSNISTR

    SSNISTR F1 Veteran

    Feb 13, 2004
    8,046
    SFL
    True, it was only an option on Euro spec cars. But as far as I know it was always an option, from '87-'92. Yes, it had it's issues, but there was ways to fix it as mentioned in the threads above.
     
  10. Boxer365

    Boxer365 Formula Junior
    BANNED

    Jun 8, 2006
    425
    Europe

    Yes, it is in the front by the clutch fluid reservoir on the driver side.

    When I bought my F40 the service tech advised me to run the car at least every couple of weeks and to move the suspension through the three settings when I did so.
     
  11. A_SINGER

    A_SINGER Karting
    BANNED

    Mar 19, 2008
    55
    I had one in the UK and it was grate for driving in London where the adjustible suspension made it grate for going over the spped humps in some of the streets and where a normal F40 would never get over. It seemed like every time I got back from US the mechanics wuold come and sort it out. But moving it every now and then didn't seem to solve the problem it, had a mind of its own. A grate idea though as it made the car usable and you could go anywhere with it which you cant with the non adjustible F40. I think ferrari made the f40 just a bit to low for normal raod use.
     
  12. stradman

    stradman Formula 3

    Jan 8, 2004
    1,284
    London UK
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    Stradman
    Well, still have the problem. Although Ferrari Uk explained how to short the circuit on the suspension and reset the computer, I'm afraid I managed to shaft one of the pin wire connectors to the ECU(don't ask me why or how!!...) Anyway need new pin now, for the connector in order to connect to ECU so have a auto electrical guy looking to sort this out for me. Hopefully next week. Once he does find a pin for me then we will also install a switch which will be used to reset the ECU everytime this happens and so hopefully end of story.... Stay tuned!

    As for Ryan...Yes I did do a search before I asked. However as you will see,there were no concise detailed instructions on how to perform the reset which is why I asked. Perhaps before you put your foot in your mouth again in the future, you should be certain that the previous posts or searches contain the information required....
     
  13. SSNISTR

    SSNISTR F1 Veteran

    Feb 13, 2004
    8,046
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    Give me a break man, I was tring to help you out, not be a di*k or anything. Last time I do that....
     
  14. stradman

    stradman Formula 3

    Jan 8, 2004
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    Stradman
    Break given... All is forgotten. :)
     
  15. SSNISTR

    SSNISTR F1 Veteran

    Feb 13, 2004
    8,046
    SFL
    Same here....
     
  16. Birel

    Birel Formula 3

    Sep 12, 2005
    1,953
    Brisbane
    Full Name:
    Andrew Turner
    This has worked for me in the past with a car that wasn't used too much :
    In the front is a spherical high pressure "accumulator". (Item 8 in the tech sheet) Inside that is a ball bearing that sits over a hole to stop air leaking back. There is oil inside this device and if left standing for ages that goes a bit like syrup and the ball bearing gets stuck. A sharp tap with a hammer more often than not got it functioning again. This sounds horribly non-tech and I'm no engineer so apologies for the poor description. The problem can be attributed to lack of regular use. Hope it works for you !!
     
  17. stradman

    stradman Formula 3

    Jan 8, 2004
    1,284
    London UK
    Full Name:
    Stradman
    Ok thought I would update about my problem. It has now been resolved at took all of 30 minutes to sort out. Mind you I did have a go myself and screwed up the pins connecting the wires to the central ecu while trying to pull them out of the connector itself( which of course I did not have to do!) Alas Terry Halliday-mobile auto electrician extraodinaire- came to my rescue at home. I sent him the broken pin and he sourced a new one for me, came by and shortcircuited the wires-according to the Ferrari technical letter which I posted in the begining of the thread- and put in a switch which I can flick on for this shortcircuit, so that I can correct the problem if it happens again. Once shortcircuited, the suspension went up immediately and all is well again.
    Now of course I have another problem with my alternator light coming on! Just got it back also from a service where they took out the alternator and sent it away to be checked and came back saying it was ok. They put in a new battery nonetheless, but the light has started to come on now. So it will be going back again. Dont know what it could be though, maybe a wire? Electricals on an F40 are not that complicated, so hopefully they will find the problem.
     
  18. mattymouse33

    mattymouse33 F1 Rookie

    Oct 25, 2004
    4,634
    We'll set aboot ye!
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    Matthew
    Totally agree Ryan. The way i was reading it was that Stradman had not actually looked yet. State the obvious, do a search, anyway Stradman, must be a tad frustrating you cant get the car out the driveway. The idea of the switch sounds perfect, hope your electrician sources the pin and solves the problem.

    Matthew
     
  19. jjoldskool

    jjoldskool Rookie

    Jun 19, 2010
    10
    Singapore
    Full Name:
    JONATHAN SEYMOUR
    I know this is an old thread ... But what's the upshot of this , does the factory
    Mod fix the issue or is there something else ? I have just bought an F40 and am a little concerned about the problem ... Would like to sort it before it happens.
    Thx Jonathan
     
  20. TimTifosa

    TimTifosa Karting

    Mar 21, 2007
    201
    I have had my lifting suspension F40 for 9 years.
    Occasionally when the car is stuck in the depressurized
    low position (usually after it has not been driven much),
    I have to short the 2 pins that have been described previously.

    I fitted a switch under the dashboard, which shorts the pins
    without leaving the driving seat. I also fitted a switch under
    the dashboard, which cuts the power to the suspension ECU.
    This way I can reboot the ECU and short the reset pins
    without even switching the engine off.

    The lifting suspension, which is a must for some F40 owners,
    is easy to live with using this simple mod. I fitted everything
    myself, but for those who are technically challenged, a
    competent mechanic or auto electrician can do the modification
    in less than 30 minutes.

    Another factory suggested mod, is to fit a header tank for
    the suspension hydraulic fluid reservoir. I did this, and used
    a Ferrari 360 F1 hydraulic tank. Easy mod, but I have never
    had the hydraulic fluid level dropping too low.

    The lifting suspension is easy to live with with these mods.
    Don't listen to what some others say. They obviously did not
    have access to knowledgeable mechanics regarding this issue.
     

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