Recommendations for 2 stage temp switch for 2 speed fans ??

Discussion in 'Engine Topic' started by Aceshigh, Sep 29, 2010.

  1. Aceshigh

    Aceshigh Veteran Member Lifetime Gold Member

    26,757
    4
    Apr 9, 2001
    Boondocks
    Looking for a good high quality 2 stage temp switch for my electric fan setup.

    Looking for recommendations from those that have tried, returned, failed, etc.
    I don't want to shop blindly so I'm hoping I can see what people like the most.
    Needs to be something that can turn on 2 different fan speeds.
    Something like a 185* and 200* or something ......I dunno.

    Or should I just get 2 different temp switches??? Also, in the head preferably right ??
    thanks.
     
  2. onovakind67

    onovakind67 Veteran Member

    4,655
    1
    Jul 8, 2001
    Fairfield, CA
    BMW has a dual switch, it's 91°C and 99°C, part number 61311378073, about $30.
     
  3. Aceshigh

    Aceshigh Veteran Member Lifetime Gold Member

    26,757
    4
    Apr 9, 2001
    Boondocks
    195* and 210*

    Wasn't there an issue with some metric threading with that one ???
    Is that an issue or no ? I think I saw you had yours into the radiator somehow.

    Found the switch for $10 @ RockAuto https://www.rockauto.com/dbphp/prt,107,61311378073
    [​IMG]

    I found the plug, BMW Part # 61131378410
    Found the Connector and wires too, these are dealer prices.
    61131378412 Angled Connector $1.18
    61130005199 0.2-0.5mm Small Wire $1.97 Ea
    61130006665 0.75mm Big Wire $2.07 Ea


    Thanks BTW !!!! :)

    I see they also have this one for 80 / 88 Celsius which is 176* / 190* F.
    BMW Part # 61318361787 but I don't think the fan will ever shut off with this one.
     
    Last edited: Oct 11, 2010
  4. onovakind67

    onovakind67 Veteran Member

    4,655
    1
    Jul 8, 2001
    Fairfield, CA
    I'll be going to the boneyard today so I'll check out the wiring. I have not used one of these switches in my car, as I already had two other switches and my water neck has places for four.
    As a side note, my fan is set to come on low speed at 195°-200° but the engine hasn't got to that temperature yet. It was 100°+ here this week and even in traffic the engine stays below 190° with a 176° thermostat. I've had this electric fan setup for two months now and the fan has only run once, when I let the car idle for about 15 minutes in my driveway after a 20 mile ride.
     
  5. Aceshigh

    Aceshigh Veteran Member Lifetime Gold Member

    26,757
    4
    Apr 9, 2001
    Boondocks
    Thanks bro.

    So really your setup is untested for the high side of the fan still?
    I will mimic your setup if its that reliable in 100* temps. :)
    I will have to go get the lower degree thermostat.
     
  6. onovakind67

    onovakind67 Veteran Member

    4,655
    1
    Jul 8, 2001
    Fairfield, CA
    Keep in mind that my engine is a BMW M30 3.0L straight six with an 80°C thermostat.
     
  7. earnhardtgm3

    earnhardtgm3 Veteran Member

    2,163
    30
    Dec 18, 2007
    Camaro Country,GA

    Trying to get all the parts I need to do this setup:
    Aceshigh
    Where did you find this?
    61131378412 Angled Connector $1.18

    Thanks
     
  8. green 1977

    green 1977 Veteran Member Lifetime Gold Member

    3,747
    73
    Aug 18, 2003
    On Wisconsin!
    My aftermarket radiator has what appears to be an extra bung in it ... it appears to be 3/8 pipe thread... so I may have to fina a different sending unit
     
  9. onebad280z

    onebad280z New Member

    1
    0
    Jan 1, 2011
    dfw TX
    I know I'm bumping an older thread but I just found this thread from a little google searching.

    Great info here!! I'm piecing together stuff for a taurus fan in my 280z and this looks like the perfect combination of parts.

    In my additional research, I've found one extra piece that should make the install a little bit easier.

    Jags that Run has a brass bushing adapter to convert 14mm x 1.5 to 3/8 npt. It's $22 shipped but should make it a little bit easier to install the temp sending unit.

    http://www.jagsthatrun.com/Pages/Parts_BMW-WatTempSending.html


    Kevin
     
    Last edited: Jan 2, 2011
  10. steve_1978

    steve_1978 Veteran Member

    376
    0
    May 5, 2010
    ontario canada
    personally i would just buy a 3/8 pipe plug and drill and tap that out to the 10 x 1.5, cost like 2-3$ and about 10 min labour
     

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