What temp do fans come on?

What temp do fans come on?

This is a discussion on What temp do fans come on? within the F150 Ecoboost Performance forums, part of the F150 Ecoboost Garage category; At what engine/coolant temp do our fans kick on?...

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Thread: What temp do fans come on?

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    Ecoboost Veteran gotboost150's Avatar

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    What temp do fans come on?

    At what engine/coolant temp do our fans kick on?

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    Ecoboost Jr Member 0949er's Avatar

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    Not sure, but I notice the exterior fans running fairly consistent when ambient temps are 93+

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    Ecoboost Master Talley's Avatar

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    Should be set to 190.

    oh and also should turn on when the A/C compressor kicks on too no matter what temp/speed.
    mikemetz82 and mc4100s2 like this.
    11' XLT Screw 3.5L 2WD 3.55 - Tune Only - LET 93 Tune - 370rwhp / 514rwtq

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    Eco-Beast VolForLife's Avatar

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    Quote Originally Posted by Talley View Post
    Should be set to 190.
    Should be maybe. But reality is that the factory fans come on between 200-205.

    EDIT: Or when the a/c is on, as stated.



    Last edited by VolForLife; 07-10-2014 at 07:32 AM.
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    Ecoboost Pro Teamfour's Avatar

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    Mine come on at 180...thanks to 5*.
    VolForLife likes this.
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    Ecoboost Master Talley's Avatar

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    Quote Originally Posted by VolForLife View Post
    Should be maybe. But reality is that the factory fans come on between 200-205.
    Now that I think about it probably 200 ya. Tstat will be cracking open around the 190 mark so they want open tstat and good flow and then the fans come on to maintain. I usually see 198-204 on my temps so ya.
    VolForLife likes this.
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    Ecoboost Master LeadingEdgeTuning's Avatar

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    I setup my custom tunes to turn on fans at 190 for stock Tstat and 170 for aftermarket Tstat...

    The stock tune is set for 210...

    SCT canned tune is set for 202...
    gotboost150 likes this.

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    Ecoboost Regular denjolicoeur's Avatar

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    Quote Originally Posted by LeadingEdgeTuning View Post
    I setup my custom tunes to turn on fans at 190 for stock Tstat and 170 for aftermarket Tstat...
    Given that I live in a climate that's freezing half of the year and 40 below for a couple of months, would that 170 setting hurt my fuel economy? What if we kept the 170 tstat but only had the fan kick in a say 190 or 200.

    What effects would that have in both summer & winter? (economy, performance, etc..) .... or should I have 2 tunes with different settings for winter & summer? Just thinking out loud here.

    (btw Erick, liking that last revision but haven't had a chance to log, been super busy at work; will get you some data soon)
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    Ecoboost Master LeadingEdgeTuning's Avatar

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    Quote Originally Posted by denjolicoeur View Post
    Given that I live in a climate that's freezing half of the year and 40 below for a couple of months, would that 170 setting hurt my fuel economy? What if we kept the 170 tstat but only had the fan kick in a say 190 or 200.

    What effects would that have in both summer & winter? (economy, performance, etc..) .... or should I have 2 tunes with different settings for winter & summer? Just thinking out loud here.

    (btw Erick, liking that last revision but haven't had a chance to log, been super busy at work; will get you some data soon)
    This is a really great question...for your climate, 2 different tunes would benefit you for sure as far as economy is concerned, although I use the term economy loosely on a performance oriented tune...

    As far as performance, I would say that your ideal coolant temp is around 170, so it would be interesting to log that this winter and see where we are at as far as the target coolant temps go...

    I would do something like this for customers at no extra charge, creating 2 different tunes for the colder climates...it is very easy and I am always happy to help.

    Glad you are liking the latest revision, will look forward to seeing some logs from you soon...

  11. #10
    Ecoboost Veteran gotboost150's Avatar

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    So the canned 87octane SCT tune is kicking my fans on at 202°? Over here in AZ I need them kicking on sooner!

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