360 Misfire After High RPM Pull | FerrariChat

360 Misfire After High RPM Pull

Discussion in '360/430' started by Ds1, Jan 24, 2020.

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  1. Ds1

    Ds1 Rookie

    Dec 27, 2011
    39
    Syracuse, NY
    Hey all, after a pull the redline in my 360 (with no other odd sounds or issues), the engine started running rough, like it was on 4 cylinders. No codes at the time. Drove it very easy 1/2 mile away to my garage and parked it, obviously way down on power.

    Next day started it up again thinking maybe the computer shut down half the motor while running hard but it started right up and ran the same way, like it was on 4 cylinders, this time throwing a CEL.

    OBD II Scan Returned:

    ECU 1:
    P1114
    P0300 (multiple/random misfire)
    P0304
    P0305
    P0308
    P1537

    ECU 2:
    P1123
    P0500 (vehicle speed sensor malfunction which might be due to me running 19" wheels)

    I have searched and found story's of intake gaskets and MAF's but none about what is seemingly like half the engine shut down. I'm praying I didn't drop compression on a cylinder.

    I'm quite handy - but where do I even start on this diagnosis?
     
  2. 24000rpm

    24000rpm F1 Rookie

    one thing to try: under the throttle pedal, the throttle by wire connector, disconnect it, clean it. come back and tell us the result
     
  3. Ds1

    Ds1 Rookie

    Dec 27, 2011
    39
    Syracuse, NY
    Didn't see that one coming. I'll give it a try.
     
  4. 24000rpm

    24000rpm F1 Rookie

    I didnt see that too 3 years ago. same symptom. thanks for member cwwck here.


     
  5. Ds1

    Ds1 Rookie

    Dec 27, 2011
    39
    Syracuse, NY
    Just following this up, I didn't have much time and brought the car in to the shop for the timing belt, they diagnosed the issue as the gaskets between the intake runners and top of the motor. I had found another thread here previously, it's common for these two wear out and come apart and then un-metered air gets in and the ECU shuts that side of the motor down. New gaskets are only $8 but removing all the stuff to get to them is $1500 in labor hahaha.
     
    24000rpm and Apollo 11 like this.
  6. mike32

    mike32 F1 Veteran

    May 13, 2016
    5,828
    Isle of man- uk

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