355 failed MOT test, at only 14,000 miles! | FerrariChat
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355 failed MOT test, at only 14,000 miles!

Discussion in '348/355' started by nige1, Jun 6, 2004.

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  1. nige1

    nige1 Rookie

    Jun 6, 2004
    40
    London
    #1 nige1, Jun 6, 2004
    My 96 spider failed on exhaust emissions: too high oxygen! The Cats seem OK & I am told the oxygen sensors rarely fail.

    Can anyone suggest the cause & solution.

    This was supplied by a main dealer 8 months ago, so the 6 month warrenty may not help.

    Also, can anyone recommend the best way to clean & protect the canvass roof?
     
  2. ART360

    ART360 Guest

    #2 ART360, Jun 6, 2004
    Nige profile does not say where you are. If you are in the USA, then you may have a warranty, maybe not.

    Art
     
  3. GrigioGuy

    GrigioGuy Splenda Daddy
    Lifetime Rossa Owner

    Nov 26, 2001
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    Snike Fingersmith
    #3 GrigioGuy, Jun 6, 2004
    MOT implies Britian.

    Here in the states, all emissions equipment is covered for 7 years and 70,000 miles by federal law. Perhaps there's something similar over there?
     
  4. Mickey

    Mickey Formula Junior

    Jan 20, 2004
    414
    Linnet Drive
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    Mike
    #4 Mickey, Jun 6, 2004
    Nige, may be you should try the UK session ?
     
  5. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    19,943
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    Tom
    #5 tbakowsky, Jun 6, 2004
    How about DRIVING the car more?
     
  6. Gary(SF)

    Gary(SF) F1 Rookie

    Oct 13, 2003
    3,637
    Los Altos Hills, CA
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    Gary B.
    #6 Gary(SF), Jun 6, 2004
    Must be something lost in translation...what's the problem with too much oxygen?? Now nitrous oxides, that's something else...

    Gary
     
  7. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    19,943
    The Cold North
    Full Name:
    Tom
    #7 tbakowsky, Jun 6, 2004
    Emission are read with the following gases

    HC= hydrocarbons
    Co= carbon monoxide
    NoX= Oxides of nitrogen.

    which one did you fail on? At what engine speed did you fail? Idle, drive, 2500rpm etc. All this has be knowen before you can really determine why it failed. Maybe you scan and post the emission resluts for us?
     
  8. nige1

    nige1 Rookie

    Jun 6, 2004
    40
    London
    #8 nige1, Jun 6, 2004
    Thanks for your replies.
    I am in the UK not USA. I am also on the UK session aswell, but yours seems more active.
    I don't have a scanner. The report for the cars test is as follows:

    Oil temp= greater than 80C.
    Cooling fan cut in.

    First Fast Idle test: 2250-2750 rpm:
    CO = 0.39%vol (needs to be less than .30) =FAIL
    HC = 124ppm vol (needs to be less than 200) =PASS
    λ (gamma symbol?) = 0.98 ( needs to be .97-1.03) = PASS

    Second Fast Idle Test: 2250-2750 rpm:
    CO = 0.03%vol (needs to be less than .30) =PASS
    HC = 13ppm vol (needs to be less than 200) =PASS
    λ (gamma symbol?) = 1.38 ( needs to be .97-1.03) = FAIL

    Natural Idle Test 950-1170 rpm
    CO = 0.01 %vol (needs to be less than .50) = PASS

    Overall Result =FAIL.

    thanks.
     
  9. ferrari355gtb

    ferrari355gtb Formula 3

    Nov 3, 2003
    1,600
    UK
    Full Name:
    R
    #9 ferrari355gtb, Jun 7, 2004
    Slip the MOT guy a few quid, there are no limits set for the Ferrari so they used the maximum ones available - maybe you've gone over those. Mine passed without cats and Tubi.
     
  10. Robertb

    Robertb Formula 3

    Nov 19, 2003
    1,331
    South Oxfordshire, U
    Full Name:
    Robert
    #10 Robertb, Jun 7, 2004
    The test results differed considerably on the first and second tests.

    I'd suggest a resit!

    Where in the UK are you based?
     

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