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348 check engine light

Discussion in 'Technical Q&A' started by brencam, Jun 10, 2008.

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  1. brencam

    brencam Rookie

    Sep 13, 2006
    7
    #1 brencam, Jun 10, 2008
    Hello I have a 1990 348 TS with test pipes and a tubi, the check engine light keeps coming on and the errors are for the thermocouplers in both banks. I see several of you out there running a similar set up, are you having the same issues?
     
  2. Davidt

    Davidt Formula Junior

    Nov 18, 2003
    713
    Ontario, Canada
    Full Name:
    Dave T.
    #2 Davidt, Jun 10, 2008
    Check engine or Slow down lights?
     
  3. Davidt

    Davidt Formula Junior

    Nov 18, 2003
    713
    Ontario, Canada
    Full Name:
    Dave T.
    #3 Davidt, Jun 10, 2008
    The thermocouplers are there to measure the cats temp. Without the cats, temp should not be an issue. I suspect a bad cat ecu.
     
  4. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,614
    The Brickyard
    Full Name:
    The Bad Guy
    #4 ernie, Jun 11, 2008
    Exactly what code numbers are you getting?
     
  5. brencam

    brencam Rookie

    Sep 13, 2006
    7
    #5 brencam, Jun 11, 2008
    Thanks for the reply, I got this car with all of the exhaust already installed. I noticed the thermocouplers are not even attatched to any of the piping and the ECU is disconnected. I haven't had the time to look to see if there is a provision to install the probe into the system that is currently installed. Is this how all the aftermarket stuff work?
     
  6. FandLcars

    FandLcars F1 Rookie

    Aug 6, 2006
    3,057
    Tempe, Az
    Full Name:
    Rick Schumm
    #6 FandLcars, Jun 11, 2008
    Just a technical note: The correct term is thermocouples, not thermocouplers. ;) I've seen the incorrect term used by enough posters that I thought it was worth noting the correct terminology. Hope this isn't too AR for some :)
     

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