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Thread: Liana RXi radiator fan triggering late

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    Default Liana RXi radiator fan triggering late

    AOA

    I have noticed that the radiator fan of my car triggers too late (automatic ofcourse). The water gets almost boiling hot and then the fan gets in action. I don't want to direct it because "winter is coming"
    Can anyone suggest me if there is a way to alter it so that the fan starts at a bit lower temperature?

    Regards

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    does your engine overheat? Why do you think its boiling?
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by Xulfiqar View Post
    does your engine overheat? Why do you think its boiling?
    i dont think so... Because the gauge doesn't go above normal (middle) position. I opened the radiator cap and saw bubbles of water indicating the water was really hot. But it wasn't as hot as when car heats up (i.e water coming out of radiator with pressure). In my view its the radiator fan which shouldn't turn on that late

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    you are doing some serious mistakes there.

    never under any uncontrolled circumstances open a hot radiator cap unless

    a - you are devdas and your girl left you
    b - you have been caught by your wife while on a date with girlfriend
    c - you have no will to live peacefully ever again

    2nd and 3rd degree burns are not fun - they are very painful..

    Under normal condition the hose pipes will be hard with pressure (radiator cap is doing its job and system is tight), Any mechanic telling you otherwise needs to be handed over to a museum as a historic artifact - only cars from the 1930s had a convection cooling system with no pressure.

    When you open the cap the system is under normal 1 atm pressure - this will cause water to boilover - with cap installed the system will self pressurize and hence increase the boil point - which wont happen because the cap will release the coolant/water to the expansion tank at anything above 1+1 atm.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by awaisniazi6 View Post
    AOA

    I have noticed that the radiator fan of my car triggers too late (automatic ofcourse). The water gets almost boiling hot and then the fan gets in action. I don't want to direct it because "winter is coming"
    Can anyone suggest me if there is a way to alter it so that the fan starts at a bit lower temperature?

    Regards
    you can fix the issue (if you want to change operating temperature of the fan)

    You have to put a pull up resistor if you have a negative temperature coefficient (NTC) sensors
    or
    You have to put a pull down resistor if you have a positive temperature coefficient (PTC) sensor


    In both the case, a small resistor can change the temperature value for automatic fan start up
    Ehtesham Bokhari
    https://www.facebook.com/sebokhari

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    Quote Originally Posted by Spano View Post
    you can fix the issue (if you want to change operating temperature of the fan)

    You have to put a pull up resistor if you have a negative temperature coefficient (NTC) sensors
    or
    You have to put a pull down resistor if you have a positive temperature coefficient (PTC) sensor


    In both the case, a small resistor can change the temperature value for automatic fan start up
    But wouldn't a pull up or pull down resistor always send a HIGH or LOW signal to the fan putting it simply to ALWAYS ON state?

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    Quote Originally Posted by awaisniazi6 View Post
    But wouldn't a pull up or pull down resistor always send a HIGH or LOW signal to the fan putting it simply to ALWAYS ON state?
    no, a pull up or pull down resistance only pull up or pull down the voltage value at that point.

    by doing that the over all variation curve remains the same but with some constant.
    That constant allows us to bring the curve near to the triggering value.
    Ehtesham Bokhari
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    connect an obd2 scan tool and see at which temp the fan stats working.if its 98 deg,then your car is all fine
    Just Do It Your Self!!!!!

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    Elm327 OBD scantool doesn't work with Suzukis as much as I've heard.... other options are costly

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    Quote Originally Posted by awaisniazi6 View Post
    Elm327 OBD scantool doesn't work with Suzukis as much as I've heard.... other options are costly
    go to suzuki 3s or any electrician
    Just Do It Your Self!!!!!

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