High idle 95 F355 | FerrariChat
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High idle 95 F355

Discussion in '348/355' started by F355Bob, Apr 16, 2018.

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  1. F355Bob

    F355Bob Formula 3

    Nov 4, 2003
    2,001
    Madison, Wisconsin
    #1 F355Bob, Apr 16, 2018
    My idle goes to 1450 rpm after the car is driven and warmed up. It does not do this right away but maybe after 20 minutes of driving. The throttle or pedal does not seem stuck. Where to start? Idle valve, vacuum leak, O2 sensors?
     
  2. INTMD8

    INTMD8 F1 Veteran
    Owner Silver Subscribed

    Jun 10, 2007
    6,798
    Lake Villa IL
    #2 INTMD8, Apr 16, 2018
    You mentioned before having piggyback ecu's. Do these control only fueling or idle functions as well?

    I would start out by making sure the throttle is in fact closing all the way and it doesn't have tension on the throttle cable with no input.
     
    Yassa likes this.
  3. F355Bob

    F355Bob Formula 3

    Nov 4, 2003
    2,001
    Madison, Wisconsin
    #3 F355Bob, Apr 16, 2018
    The piggy back computers control timing and fuel. I will check throttle cable again, but did not seem to be binding.
     
  4. SoCal1

    SoCal1 F1 Veteran
    Owner Silver Subscribed

    Jun 14, 2011
    8,633
    SoCal LA/OC/New Mexico
    Full Name:
    Tim Dee
    #4 SoCal1, Apr 16, 2018
    Those idle compensaters can cause that havoc or the seal around it. Popular after winter rubber seal thing
     

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