Reverse wont engage on my 360 F1 | FerrariChat
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Reverse wont engage on my 360 F1

Discussion in '360/430' started by roadkill, Mar 20, 2012.

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  1. roadkill

    roadkill Rookie

    Jul 16, 2011
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    Randall Grim
    #1 roadkill, Mar 20, 2012
    Hi Guys , I am looking for some help with a problem that has recently reared its head so to speak on my '04' 360 F1. It has decided not to engage the reverse though the forward gears are OK.
    It seams to be happening after some heavy driving and has then sorted itself out once the engine cools.
    I thought I had seen this problem discussed some time back but can't find that thread now.The dealer is suggesting all sorts of things over the phone and I will take it in in a couple of days for him to give it a look. Is it likely to be the F1 pump as he suggests or a dreaded sign of a clutch on the way out?
     
  2. mooose

    mooose Karting

    May 27, 2008
    118
    #2 mooose, Mar 20, 2012
    mine does this at times when the clutch is hot. Stick it into first and engage reverse from there.
     
  3. roadkill

    roadkill Rookie

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    Randall Grim
    #3 roadkill, Mar 20, 2012
    Thanks for the tip to try to get reverse to engage from 1st I will try it tomorrow when I next drive it.
    It does not completely solve the problem as to why this has suddenly started and how to resolve the problem rather than finding a way to live with it.
     
  4. rustybits

    rustybits F1 Rookie
    Professional Ferrari Technician

    Jan 28, 2007
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    Eddie B
    #4 rustybits, Mar 20, 2012
    The clutch PIS is set too low. Once the car gets hot and everything expands the clutch drags. When you try and select reverse the RPM sensor in the gearbox indicates the shaft is turning and won't allow selection of reverse. That's why it's fine when it's cold....
     
  5. LouB

    LouB Formula 3

    Apr 15, 2001
    1,811
    FL, OR
    #5 LouB, Mar 20, 2012
    I had the same problem. Failed switch. Don't try to live with it, the tricks stopped working. Get it looked at.
     
  6. Xcheckme

    Xcheckme Formula 3

    May 10, 2011
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    Lukas
    #6 Xcheckme, Mar 20, 2012
    Make sure that the switch in the reverse sending unit operates properly. I've had a simar issue and had to replace the reverse lever. The switch that the lever operates is equally flimsy as the lever itself.
     
  7. netman

    netman Formula 3

    Jun 17, 2008
    1,905
    OC SoCal
    #7 netman, Mar 20, 2012
    search the forum to find out about replacing the lever in ther reverse control unit instead of the pricey control unit as a whole.
     
  8. voicey

    voicey Formula 3

    Jul 29, 2009
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    Aldous Voice
    #8 voicey, Mar 20, 2012
    Listen to his man - he knows what he's talking about.
     
  9. FerrariDublin

    FerrariDublin F1 Rookie

    Jun 14, 2009
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    Greg
    #9 FerrariDublin, Mar 20, 2012
    Yup! What he said!
     
  10. Jimmilew

    Jimmilew Formula Junior

    Apr 13, 2011
    364
    #10 Jimmilew, Mar 20, 2012
    Yep, that always works for me when I cant get R from N. The only time this happens is if I have been running her hard, and she is hot. Never a problem if she is cool.
     
  11. Jimmilew

    Jimmilew Formula Junior

    Apr 13, 2011
    364
    #11 Jimmilew, Mar 20, 2012
    Yes, this too is correct. I intentionally have the PIS set a little low, as I spend 99% of my time going forward, and I like the quick gear engagement feel a lower PIS allows. I will live with the occasional R fom 1 as a tradeoff.
     
  12. Kouki Monster

    Kouki Monster Formula Junior

    Feb 26, 2007
    422
    Washington
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    AJ
    #12 Kouki Monster, Mar 21, 2012
    excuse my ignorance PIS?
     
  13. FerrariDublin

    FerrariDublin F1 Rookie

    Jun 14, 2009
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    #13 FerrariDublin, Mar 21, 2012
    Point of Initial Slippage - basically the "kiss" point for the clutch.
     
  14. Kouki Monster

    Kouki Monster Formula Junior

    Feb 26, 2007
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    #14 Kouki Monster, Mar 22, 2012
    Oh okay! hmm, Didnt think that would be a "upgrade"?
     
  15. rustybits

    rustybits F1 Rookie
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    #15 rustybits, Mar 22, 2012
    I agree, it makes a big difference to shift speed with a very low PIS. You should be aware, though, that if you put your car into first and it creeps from standstill, you have rpm in the 'box that shouldn't be there. I've stripped 3 'boxes now that have damaged synchro's because of this.....
     
  16. Kouki Monster

    Kouki Monster Formula Junior

    Feb 26, 2007
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    AJ
    #16 Kouki Monster, Mar 24, 2012
    And if it does that means you need to up the pis?
     
  17. roadkill

    roadkill Rookie

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    Randall Grim
    #17 roadkill, Mar 27, 2012
    Hi guys,
    I have been to my local dealer who plugged in the SD-2 and checked the PIS which was 4.5 and he opened it out all the way to 5.8, apparently fully open and checked the error codes which were clear , surprisingly even as my first time there did it on the spot and for free ( big thanks to Barbagello's in Perth Oz).
    I have not had the reverse problem again but have not driven the car hard and will post if the problem recurs.

    Cheers
     
  18. 360dubai

    360dubai Rookie

    May 9, 2013
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    SP
    #18 360dubai, Apr 19, 2014
    Hi All,

    I have the same thing with mine, strange thing is that it only won't engage reverse when the engine is cold....when I have driven for 10 minutes it is fine until the engine cools down completely . Any ideas? Dealer is talking about expensive potentiometer meters / sensors...?
     
  19. London

    London Karting

    Aug 29, 2009
    189
    London
    #19 London, Apr 19, 2014
    Hi Eddie, just to clarify, the test is
    - car at a standstill on a level road
    - engine at idle (no throttle)
    - press the brake pedal, shift from neutral to first, release brake pedal
    - if car creeps forward, PIS is too low

    Correct? Should this be done with the transmission cold or warmed up?

    Thanks!
     
  20. Skidkid

    Skidkid F1 Veteran
    Owner Rossa Subscribed

    Aug 25, 2005
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    John Zornes
    #20 Skidkid, Apr 19, 2014
    I am not an expert but my understanding of the test isn't based on being able to move the car. The test is about transfer of energy to the output shaft. You will have clutch drag, and hence load on the gearbox, long before the the car moves.
     
  21. English Rebel

    English Rebel Formula 3

    Aug 13, 2013
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    Alan
    #21 English Rebel, Apr 19, 2014
    When I had the CS TCU fitted the tech set the PIS low. When cold (higher idle speed) the car would creep in first gear on level ground. I took it back and he adjusted it so it didn't creep.
    Alan
     
  22. Kipper

    Kipper Karting

    May 1, 2010
    103
    Australia
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    Kipper
    #22 Kipper, Apr 19, 2014
    Same thing happened to me some time ago posted about this, in my case i know the reverse lever was switching OK because from memory i would get a beeping noise but no engagement

    next day all was fine

    Rusty bits statement is the most sensible thing i have heard at this stage

    Kipper
     

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