430 - Slow Down Light - accumulator to be replaced? | FerrariChat
Buy

430 Slow Down Light - accumulator to be replaced?

Discussion in '360/430' started by Marco91, Mar 23, 2024.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Marco91

    Marco91 Karting

    Mar 2, 2022
    166
    Italy
    #1 Marco91, Mar 23, 2024
    I own a '05 F430 F1 and the SD light is becoming a nightmare to me!

    I thought the main reason was the clutch that was completely worn and replaced 1000km - and yet, the SD light still pops up and sometimes I need to stop for like a minute as the gears won't engage.

    EDiff sensor looks ok, I had it replaced last year.

    With a diagnosis tool I read the error code C2011 related to the accumulator, does it mean it's time to replace it?

    Anyone experienced and fixed the problem with a new accumulator? Do you know at what ideal pressure does it works? On the diagnosis it was showing 48 bar.
     
  2. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,939
    Central NJ
    Full Name:
    Dominick
    #2 flash32, Mar 23, 2024
    Hi

    Let us know your timings
    Open door , turn key on wait for pump to stop, and then start stopwatch - let us know how long does pump stay off and how long does it run for ( this has to be accurate )
    2nd- how many shifts from 1 to n to 1 do you get before pump starts
    Start car and let me know how long pump stays off in between cycles
    Drive car at 25 straight without changing gears or turning and tell me how long pimp stays off
     
  3. andrejwolk1975

    andrejwolk1975 Karting

    Feb 28, 2020
    118
    Italy
    Full Name:
    Andrea M
    #3 andrejwolk1975, Mar 23, 2024
    The F1 pump starts charging when you open the driving door. Start counting how many second does it take to start/stop.
    5/10 seconds, tip top
    15/20, a little "tired" pump or some leak somewhere.
    25/30, mmmmhhhh start thinking about changing pump, accumulator or both.
     
  4. mwstewart

    mwstewart F1 Rookie

    Feb 5, 2014
    2,781
    #4 mwstewart, Mar 23, 2024
    Timing without the engine running is useful as a guide but with the caveat of battery health/voltage having a big effect on it.
     
    flash32 likes this.
  5. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,939
    Central NJ
    Full Name:
    Dominick
    #5 flash32, Mar 23, 2024
    Let's see what the OP replies to my post ...and take it from there ...

    That being said ..a weak battery always makes other things look bad

    Sent from my moto g power using Tapatalk
     
  6. Marco91

    Marco91 Karting

    Mar 2, 2022
    166
    Italy
    #6 Marco91, Mar 24, 2024
    Here's an update:

    When I open the driving door, the F1 pump takes about 4s to start/stop - did this multiple times and it was always between 4s to 4,5s

    I can shift from 1st to N two times before the pump starts

    How long am I supposed to have the pump stay off when I turn the key? Because I waited more than a few minutes and I couldn't hear anything. I also started the car but I didn't hear the pump doing anything for a bit.

    I forgot to mention but in the diagnosis I also had a faulty error, regarding high temperature of the catalysts - could it be related to the thermocouple? The SD light always pops up when the car is properly warmed up and never when cold

    The battery is not old but I will definitely check the health, recently I forgot to put the battery tender and when I wanted to go for a drive the battery was kinda low but after a few attemps with the tender on I could start the car and use it
     
  7. LorenzoR

    LorenzoR F1 Rookie
    Rossa Subscribed

    Sep 26, 2015
    3,182
    Sarasota Fl/Pittsburgh
    #7 LorenzoR, Mar 24, 2024
    I always thought that the SlowDown light had something to do with the cats and this was my first thought when reading his post
     
  8. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,939
    Central NJ
    Full Name:
    Dominick
    #8 flash32, Mar 24, 2024
    Marco

    You may have two issues

    Can you do the timings as I requested..I don't care about door opening

    Use your diag tool to see when the pressure goes from 50 s to high 30s back to 50s to count how many minutes off on etc

    Key on / car off the pump should stay off for 6 mins or more
    Key on/ car on the pump should start off for 2 more mins
    Driving 25 straight without turning should be over a min

    Need to know how many seconds pump runs for after the 6 mins

    Please let us know the actual error you are getting on cats

    You may have a thermocouples issue as well as you mentioned..or just that depending on timing

    Sent from my moto g power using Tapatalk
     
  9. LorenzoR

    LorenzoR F1 Rookie
    Rossa Subscribed

    Sep 26, 2015
    3,182
    Sarasota Fl/Pittsburgh
    #9 LorenzoR, Mar 24, 2024
    What about switching thermocouples to see if the code changes...easy enough
     
  10. mwstewart

    mwstewart F1 Rookie

    Feb 5, 2014
    2,781
    #10 mwstewart, Mar 24, 2024
    There are two categories: amber is for cat temp, and red I for F1 (and other serious issues)
     
    LorenzoR and flash32 like this.
  11. LorenzoR

    LorenzoR F1 Rookie
    Rossa Subscribed

    Sep 26, 2015
    3,182
    Sarasota Fl/Pittsburgh
    #11 LorenzoR, Mar 24, 2024
    Learning everyday:D
     
  12. mike32

    mike32 F1 Veteran

    May 13, 2016
    5,962
    Isle of man- uk
    #12 mike32, Mar 24, 2024
    The later 430 does not have the cat thermocouples
     
    flash32 likes this.
  13. Kerwind

    Kerwind Rookie

    Jun 25, 2023
    14
    Full Name:
    Robert
    #13 Kerwind, Mar 24, 2024
  14. Mario Andretti

    Mario Andretti Formula 3
    Silver Subscribed

    Aug 9, 2020
    1,777
    Boston
    #14 Mario Andretti, Mar 24, 2024
    I have a thermocouple for sale if you need it. Slow down light was due to that failing in my case. Did you pull the codes?
     
  15. mwstewart

    mwstewart F1 Rookie

    Feb 5, 2014
    2,781
    #15 mwstewart, Mar 24, 2024
    The ECUs use a model to predict catalyst temp.
     
  16. Marco91

    Marco91 Karting

    Mar 2, 2022
    166
    Italy
    #16 Marco91, Apr 11, 2024
    Just a small update guys. I have replaced the cats thermocouples and the error related to the temperature of the cats is gone - they were fried actually, via diagnosis we noticed they weren't working at all.

    There's still one more error to delete which is related to the accumulator. I only got to drive it twice in the past few weeks and the SD light still pops up so I hope to get rid of it once the new accumulator is fitted - just went for a drive just to make sure and within 10km of pushing it very much the light shows up for 45 seconds avoiding me to shift gears.
     
  17. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,939
    Central NJ
    Full Name:
    Dominick
    #17 flash32, Apr 11, 2024
    Marco

    Did you do the timings that I asked on post 8 ..that will tell me how the components of the whole F1 system is doing and I can see if the accumulator is the only part needed. You should changed that and report the timings again

    Thanks

    Sent from my moto g power using Tapatalk
     
  18. Marco91

    Marco91 Karting

    Mar 2, 2022
    166
    Italy
    #18 Marco91, Apr 11, 2024
    Ciao Dominick, just done these two tests:


    Key on / car off the pump should stay off for 6 mins or more
    I've kept the car as you say for 10 minutes and I never heard the pump

    Key on/ car on the pump should start off for 2 more mins
    Same as above, kept it for about 4 minutes (or at least I couldn't hear it as even with the OEM exhaust the car is noisy enough to cover the noise of the pump)

    I did one more test though, whilst the car was at idle I kept switching 1st-N-1st and after about 12 times the SD light with the transmission icon popped up.

    I think the SD light popped also because of the faulty thermocouples but I'd say the main reason is related to the accumulator / pump. Accumulator is coming next week and I can't wait to see how it goes.
     
  19. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,939
    Central NJ
    Full Name:
    Dominick
    #19 flash32, Apr 11, 2024
    Need the other two tests

    How many shifts do you get before pump goes on .. wait 2 seconds between gears
    Also do the 25 MPH test

    so far the accumulator isn't the issue -- good idea to change but not the issue - i don't like guessing at parts

    Thanks
     
  20. Marco91

    Marco91 Karting

    Mar 2, 2022
    166
    Italy
    #20 Marco91, Apr 11, 2024
    Just tested and I can shift 1st-N twice, then the pump kicks in

    Regarding the 25mph test, what am I supposed to hear/notice? Because usually there's so much noise (tires, wind, exhaust) that I have no idea if the pump can be heard whilst driving
     
  21. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,939
    Central NJ
    Full Name:
    Dominick
    #21 flash32, Apr 11, 2024
    When you say twice ..each time you touch the paddles is one time ..so was it twice or four times

    The pump go on .,..some people who don't have a diagnosis tool..remove the cover behind your seat and listen to or feel the click of the relay

    Sent from my moto g power using Tapatalk
     
  22. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,939
    Central NJ
    Full Name:
    Dominick
    #22 flash32, Apr 11, 2024
    R u in Italy ..do you have WhatsApp?

    Sent from my moto g power using Tapatalk
     
  23. Marco91

    Marco91 Karting

    Mar 2, 2022
    166
    Italy
    #23 Marco91, Apr 11, 2024
    1st-N
    1st-N

    Yes I do have WhatsApp, will send it to you via DM
     

Share This Page