Rough Idle - cause and effect | FerrariChat
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Rough Idle - cause and effect

Discussion in 'Mondial' started by motomike8, Sep 14, 2016.

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  1. motomike8

    motomike8 Karting

    Jan 7, 2015
    60
    Phoenix, AZ
    Full Name:
    Mike
    #1 motomike8, Sep 14, 2016
    I finally sorted out an issue that's been plaguing me for a couple of months and finally resolved this week. After 2 or 3 times driving the car would start to idle rough, stall out, etc. Ran fine at higher RPM. Intermittent CEL 1-4. Felt like it was electronic because if you did a hard reset on the fuel injection the car would run fine for a day or two. Turned out to be a vacuum leak near the manifold. New piece of hose and voila we are back in action. Many thanks to Alex Traverso - one of our local independents here in Phoenix. He found it after a few days and did not charge me an arm and a leg. Highly recommend him to all F car owners.
     
  2. ChicagoFerrari

    ChicagoFerrari Karting

    Dec 19, 2013
    125
    Chicago
    Full Name:
    Sean
    #2 ChicagoFerrari, Sep 14, 2016
    That's awesome. Need more people like him rather than those who replace parts only to find it wasn't the problem yet still charge for experimentation.
     
  3. gothspeed

    gothspeed F1 World Champ

    May 26, 2006
    10,244
    U.S.A.
    Full Name:
    goth
    #3 gothspeed, Sep 14, 2016
    Great find! .... I replaced quite a few vac hoses where ever I could find/reach them and I can say the idle was noticeably improved ... :)
     
  4. caterus

    caterus Karting

    Dec 24, 2010
    68
    Oxfordshire, UK
    Full Name:
    Tim
    #4 caterus, Sep 15, 2016
    I had a similar problem and finally found that the vacuum tank which feeds the heating controls was badly corroded and leaking. The Ferrari replacement price was simply ridiculous so I had a Stainless Steel tank of similar dimensions made up for about £20 and had no problems since.
     
  5. petrolheadjeff

    petrolheadjeff Formula Junior

    Apr 16, 2015
    253
    UK
    Full Name:
    Jeff
    #5 petrolheadjeff, Sep 15, 2016
    Where is this little vac tank to be found?

    Jeff
     
  6. caterus

    caterus Karting

    Dec 24, 2010
    68
    Oxfordshire, UK
    Full Name:
    Tim
    #6 caterus, Sep 15, 2016
    On my 3.2 Euro the vacuum tank is just above the oil cooler. It is not easy to see from the top and for access it is best to remove the LHS wheel and protection guard.
     

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