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2 coolant temperature sensors ?

basil brush Apr 14, 2013

  1. basil brush

    basil brush Active Member

    hi , i'm having trouble cold starting my a3 1.8t agu and have changed my coolant temerature sonsor (blue square 4 pin plug ) however i have noticed another sensor (2 pin rectangular plug )just forward (closer to the radiator) in a plastic junction pipe in the cooling system .
    so have i got another coolant temp sensor ? i know some cars have one for the temp guage and one for the ecu , is this the case with my A3 ?


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