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    somae's Avatar
    somae Posts: 1, Reputation: 1
    New Member
     
    #1

    Aug 17, 2010, 12:36 AM
    Resistance mass air flow sensor 1996 aerostar
    We are replacing the mass air flow sensor on a 1996 aerostar. (Unfortunately we got a rebuilt one before finding out about cleaning them.) I want to test the new one to make sure it's good. I haven't been able to find information about what the ohm rating is supposed to be or which pins to test.

    Help appreciated.
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
     
    #2

    Aug 17, 2010, 11:49 AM

    Cleaning isn't always an effective repair but it's often worth a try.
    Test parameters for your Ford vary somewhat but they don't specify the resistance but would rather interpret voltage feedback at the ECM into gm/sec calculations.
    For example, at approx 0.94 gm/sec the ECM would "see" about 0.34VDC and at approx 88.91 gm/ sec the ECM would see about 3.9 VDC.
    Measurements should be done with a minimum 10M Ohm DVOM (adequate) or high impedance o-scope (preferred).

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