» » »


Ask Your Question

1999 BMW 328i Question: Radiator cooling fan not coming on



, Fort Worth, TX, May 06, 2010, 03:54

Has 12volts to fan module, also motor does run when voltage applied. How do i troubleshoot controls properly.

3 Answers
Flag This
  • Medium-star Best Answer
    May 06, 2010, 21:12

    Best way is to use a scan tool to look at the coolant temp and then to see if the engine computer is turning on the fan when it should. Does the fan come on when you turn the A/C to a really cold temp? (This will test some of the system) It absolutely should!.

    Flag This
  • Reply

    , May 23, 2010, 05:10

    Used a scan tool. Found coolant temp sensor faulty. Replaced sensor, the fan operates as it should now. Thanks!

    Flag This
  • Answer #2

    Visitor, July 27, 2010, 10:56

    check the fuse box for bad ones

    Flag This
  • Answer #3

    September 27, 2010, 12:00

    replace fan sensor in the radiator

    Flag This
Answer Ranks