Search results

  1. B

    Sensors for ECM on Mercruiser

    Hi Does anyone know it there are two water temp sensors on 350 mag mpi My guages say 152 deg at normal operating temp! What temp sensor sends a reading to the ECM? My engene wont start Hot or Cold until I give full throttle!! I changed the IAC,MAPT, No code acording th 3 hours Cert Merc mechanic...
  2. B

    Hard starting mpi mercruise 5.7

    2005 Merc 5.7 MPI 350 Mag engine is hard to start!! only starts when throttle is 1/2 of full when COLD or at operating temp.Once started it runs fine and never stalls!! Changed plugs & set gap, color of plugs is white/sand after 10 hrs run time, new dist cap & rotor, New IAC, New MAP sensor, new...
Top