Automotive intercooler fan wiring

Discussion in 'The Projects Forum' started by MTGriz87, Jul 23, 2011.

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  1. MTGriz87

    Thread Starter New Member

    Jul 23, 2011
    Hello folks,
    I'm wanting to add a fan to my intercooler on my car, but I don't want it to be on constantly.

    Ideally, it would be somehow wired into the IAT (Intake Air Temperature) sensor and only come on when temps go above a certain point like 95 degrees. Then there would be an override switch inside the car that would normally be on that I could turn the fan off at my discretion.

    The problem is that I am not sure how to do the IATemperature-dependent switching. I'm assuming it is a 0-5V sensor and temps correspond to voltages, though I don't know what that correlation is. Any ideas? Thanks in advance!
  2. scampo77

    New Member

    Jun 24, 2011
    do you have access to a scan tool to map your new temp requirements against the exsisting voltage /temp map?
  3. MTGriz87

    Thread Starter New Member

    Jul 23, 2011
    Yes, I could nick the IAT wire and get the voltage reading while seeing what my SCT OBD scanner says for temperature at the same time... get a few readings at different temps/voltages and map out a correlation
  4. SgtWookie


    Jul 17, 2007
    Sorry, discussions on automotive modifications topics are no longer permitted on these Forums, as per the Terms of Service.

  5. bertus


    Apr 5, 2008

    I am closing this thread as it violates AAC policy and/or safety issues.

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    This comes from our Tos:
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    There will be enough sites where automotive questions can be discussed :
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