Temperature Sender Unit

Discussion in 'General Motoring' started by petercharlesfagg, Jan 9, 2007.

  1. petercharlesfagg

    petercharlesfagg Guest

    405 1.9D

    How can I test a temperature sender unit?

    If it is faulty I understand why my cooling fans are in operation all
    the time, but how can I be sure that the sender unit is faulty before I
    buy new?

    Regards, Peter.
     
    petercharlesfagg, Jan 9, 2007
    #1
  2. petercharlesfagg

    MICHAEL ROCHE Guest

    Peter
    The resistance of the temperature sender changes with heat so you could test
    its resistance when cold and when the engine has warmed up. You should see a
    variation in reading.
    Mike
     
    MICHAEL ROCHE, Jan 10, 2007
    #2
  3. petercharlesfagg

    petercharlesfagg Guest

    Thankyou Mike, I will try this soon and get back to you.

    Not sure how to use my little tester though, but willing to try
    anything once!

    Peter.
     
    petercharlesfagg, Jan 10, 2007
    #3
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