512TR.. no power under 3200rpm... solved.. | FerrariChat
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512TR.. no power under 3200rpm... solved..

Discussion in 'Boxers/TR/M' started by MannyGMT2, Jun 3, 2007.

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  1. MannyGMT2

    MannyGMT2 Formula Junior

    Feb 27, 2006
    429
    Montreal, Canada
    #1 MannyGMT2, Jun 3, 2007
    Last edited by a moderator: Sep 7, 2017
    Hey everyone

    my first thread was this

    http://www.ferrarichat.com/forum/showthread.php?t=151383


    I finally got my car back today.. yes on a sunday! car kicks ass... Not sure exactly what they did.. but they told me they disconnected the thermocouples? or the 02 sensors.... please see pics ... I was just too dam excited to take the car and run....

    anyway, car seems to run super well now... its loud.. and doesn't burble/sputter anymore, no more back fires, and I can drive it in cruise mode under 3000rpm...

    anyway, can someone confirm what the heck has been disconnected here, it seems to be the sensor that runs into the testpipe... and connects to this part :
    Image Unavailable, Please Login
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  2. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    19,960
    The Cold North
    Full Name:
    Tom
    #2 tbakowsky, Jun 3, 2007
    those are the o2 sensors. You car in running in "close loop" constantly and will be running richer then normal. You should have this issue corrected. should be no need to have these disconnected in order for your car to run correctly.
     
  3. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,221
    Twin Cities
    Full Name:
    Tim Keseluk
    #3 2NA, Jun 3, 2007
    I'd like to know the whole story. Is this all that it took to fix the problem?

    I still wonder if it wasn't cam timing. If it was they'll probably never admit it now that it's fixed.
     
  4. MannyGMT2

    MannyGMT2 Formula Junior

    Feb 27, 2006
    429
    Montreal, Canada
    #4 MannyGMT2, Jun 3, 2007
    well... maybe in a week or something, I will reconnect them myself and see what happens....as for running richer than normal... its odd, cause I don't smell any unburnt fuel from the exhaust fumes ... as I did before when the car would buckle/cough/sputter....

    also.. since the 02 sensors are dissconnected, how come I don't get any check engine lights?
     
  5. MannyGMT2

    MannyGMT2 Formula Junior

    Feb 27, 2006
    429
    Montreal, Canada
    #5 MannyGMT2, Jun 3, 2007
    Well.. I don't know what the whole story is.. apparently all they did was dissconnect the 02 sensors from what I can see in the engine bay. I had told them to recheck all their connections, cause from previous threads, sometimes a 50pin plug or something that is not connected properly gives engine problems...

    as for cam timing... if cam timing was off on only one side of the engine... wouldn't that mess up the engine performance completely? My problem was only under 3200rpm....anything over 3200rpm.. the car was performing very well. So my question is.. if cam timing is off/not adjusted properly... how can you still get good engine performance after 3200rpm? I think i need to take some mechanics courses :)

    anyway.. the car is running fine now... well.. it seems fine to me... but the fact that my 02 sensors are dissconnected bothers me a bit.

    Will running rich mess up my engine?
     
  6. Whisky

    Whisky Three Time F1 World Champ
    Silver Subscribed

    Jan 27, 2006
    31,923
    In the flight path to Offutt
    Full Name:
    The original Fernando
    #6 Whisky, Jun 4, 2007
    If you drive at altitude it will.

    My 02 sensors were messed up, but it was fine on 'sea level' land, then I drove through the Rockies, and had to get service in Denver because it almost wouldn't run - honest-to-god felt like I was driving a lawnmower - NO power, and the Temp went thru the roof on it. It was not an F-car, though, it was a 3.8 V6 Ford.
     

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