F355 LH fan diagnosis, removal and repair | FerrariChat
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F355 LH fan diagnosis, removal and repair

Discussion in '348/355' started by Aeroengineman, Mar 30, 2007.

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  1. Aeroengineman

    Aeroengineman Formula Junior

    Oct 5, 2003
    897
    Maple Valley, WA
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    Dave Tegeler
    #1 Aeroengineman, Mar 30, 2007
    Is there a thread on F355 LH fan diagnosis, removal and repair? The local Ferrari dealer observed my LH fan had stopped working while in their shop 6 months ago and solve the problem by putting a new fuse in. It just stopped working but the fuse and the solinoid breaker both seem to be working normally. I need to know where else to look and what is required to remove the LH fan?
     
  2. gothspeed

    gothspeed F1 World Champ

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    #2 gothspeed, Mar 30, 2007
    Have you checked the thermal switch on top of the LH radiator? That is what triggers that fan to come on. They are about $20 from Daniel.
     
  3. ernie

    ernie Two Time F1 World Champ
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    #3 ernie, Mar 30, 2007
    ^ What Goth said.


    As for removing the fan it's EASY!

    1) Remove the left wheel

    2) Remove the front and upper part of the wheel well liner

    3) Disconnect the wiring to the fan motor

    4) Remove the nuts holding the fan to the back of the radiator

    5) Take the fan out

    That's it. You can have it out in 15 -30 minutes.
     
  4. Aeroengineman

    Aeroengineman Formula Junior

    Oct 5, 2003
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    Dave Tegeler
    #4 Aeroengineman, Mar 30, 2007
    Last edited by a moderator: Sep 7, 2017
    Shorted across the sensor lead, ignition on, and fan turned on. conclusion fuse ok, motor relay ok, bad sensor at top of radiator. Note the disconnected connector from the sensor "light blue" at the top of the radiator.
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  5. jayz

    jayz Formula 3

    Jan 16, 2006
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    #5 jayz, Mar 30, 2007
    excellent diagnosis....right on the money
     
  6. f355spider

    f355spider F1 World Champ
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    #6 f355spider, Mar 31, 2007
  7. Aeroengineman

    Aeroengineman Formula Junior

    Oct 5, 2003
    897
    Maple Valley, WA
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    Dave Tegeler
    #7 Aeroengineman, Mar 31, 2007
  8. f355spider

    f355spider F1 World Champ
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    #8 f355spider, Mar 31, 2007
    I believe the RH sensor is smaller, and on the engine itself, rather than on the RH radiator. You can ask Daniel at Ricambi to confirm.

    Based on my previous reading of the workshop manual, I think this is the sensor on the engine, which feeds to the Motronic and ultimately triggers the RH radiator: http://www.ricambiamerica.com/product_info.php?cPath=2_735&products_id=201043

    It is mounted near the oil filter....you'll see a coolant housing it is attached to. The blue connector is how to identify it.
     
  9. ernie

    ernie Two Time F1 World Champ
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    #9 ernie, Mar 31, 2007
    Glad to hear to got it sorted out. Nice work.
     
  10. gothspeed

    gothspeed F1 World Champ

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    #10 gothspeed, Mar 31, 2007
    You are welcome :eek: :D :D :D !!!
     

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