start up noise on 93ts 348 only from cold | FerrariChat
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start up noise on 93ts 348 only from cold

Discussion in '348/355' started by chris348, May 14, 2009.

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  1. chris348

    chris348 Rookie

    May 26, 2008
    14
    #1 chris348, May 14, 2009
    Can anyone help. In the past few weeks I have noticed this noise on start up only, and only from cold.
    Sounds similar to the 328 thread. She won't make the sound even after 6-7 hours after first start of the day.

    The noise gets louder under load ie foot on the brake and lifting the clutch. If the sound was coming from the rear of the engine I would say clutch bearing.

    She is due for a service now but need to go to monaco next week.

    She is at a garage tonight and has been listened to tonight but everyone has different ideas about what it could be. This is not the first time I've heard 348's do this but still dont know what it is. Many thanks!!
     
  2. FandLcars

    FandLcars F1 Rookie

    Aug 6, 2006
    3,057
    Tempe, Az
    Full Name:
    Rick Schumm
    #2 FandLcars, May 14, 2009
    I had a terrible rattle on my 348 on cold startup. I isolated it to the exhaust air injection check valves. Apparently some people like the sound this system makes during startup, but I doubt theirs rattled like mine did. Since this system only operates during warmup until coolant temp reaches 130degF (I believe it is), and I no longer have to get the car emissions inspected in Az, I just removed this whole system.. valves, plumbing, hoses, etc. and plugged the exhaust ports in the heads.
     
  3. chris348

    chris348 Rookie

    May 26, 2008
    14
    #3 chris348, May 14, 2009
    thanks for the post. i'm not sure how to explain the sound. rattel. squeak. But that sound would sort of make sence to me.
     
  4. Miltonian

    Miltonian F1 Veteran

    Dec 11, 2002
    5,966
    Milton, Wash.
    Full Name:
    Jeff B.
    #4 Miltonian, May 14, 2009
    Might be worth checking to see if your alternator belt tensioner has backed off. That COULD account for both a rattle and a squeak, and it's not uncommon.
     
  5. chris348

    chris348 Rookie

    May 26, 2008
    14
    #5 chris348, May 14, 2009
    thanks for that, will try it first thing.
     

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