355 idle climbing with ac on | FerrariChat
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355 idle climbing with ac on

Discussion in 'Technical Q&A' started by tiara4300, Oct 8, 2012.

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  1. tiara4300

    tiara4300 Formula Junior

    Feb 27, 2005
    650
    miami ,fl.
    Full Name:
    Adam
    #1 tiara4300, Oct 8, 2012
    My 97 355 idles fine with the ac off. When I turn it on the idle will not return to normal when I decelerate. It will hang up around 2500-2800rpm and I have to brake in gear to "bog" it back to normal. If I push the stop button on ac all returns to normal. I changed the idle control valve just to be sure as it was a bit dirty ,but different. Any ideas guys...
     
  2. 335s

    335s Formula Junior

    Jan 17, 2007
    870
    SF Bay Area
    Full Name:
    T. Monma
    #2 335s, Oct 9, 2012
    where you actually want real time graphing of what the various subsystems are doinf-thius means you need to find somebody with an SD-1....it actually is good for this sort of real time graphing while sitting...or light driving..FWIW
    good luck
     
  3. jm3

    jm3 F1 Rookie

    Oct 3, 2002
    4,364
    United States
    Full Name:
    JM3
    #3 jm3, Oct 9, 2012
    Make sure you turn the a/c off, and let it idle for about a minute before shutting the car off.

    The idle seems to set itself higher, every time you turn the car off with the a/c on.

    let us know if this makes a difference.
     
  4. tiara4300

    tiara4300 Formula Junior

    Feb 27, 2005
    650
    miami ,fl.
    Full Name:
    Adam
    #4 tiara4300, Oct 10, 2012
    The problem seems to be intermittant. I took the car to the Ferrari dealer and they didn't find a problem. On the way home from picking it up and after paying $1200 for thermocouplers it happened again. Before I schlep it back to the dealer to sit another two weeks, looking for anyone else who has had similar problems.
     

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