Help wanted: 90MM Lightning MAF Voltages

Discussion in 'Other Auto Tech' started by TeKKiE, Sep 9, 2009.

  1. Hello everyone!

    This may seem like an odd request, but I'm helping a friend diagnose his current build (1992 Sentra SE-R w/ SC61 SR20DET).

    He chose to utilize a Ford Lightning 90MM MAF since they are rated for over 700whp.

    Two issues here:

    1. I'm located half way across the country :rlaugh:
    2. I don't know the correct MAF voltages that should be put out from the MAF in the ACC/ON position, or the MAF voltages that should be seen at idle.
    3. I can't get his car to idle at present time, so I can't determine what his idle voltages from the MAF are.

    Assuming that the scale is 0-5V for the signal, it should be around .8 to 1.2VDC at idle? What then would be the ON/ACC voltage be? Most other MAF combinations we use run around .32~.4VDC in the ACC/ON position, but he can't register over .12~.17VDC regardless of whether he can get the car to idle (by holding the throttle open), or in the ACC/ON position.

    Thoughts?! Thanks much in advance!:hail2:
  2. Almost forgot:

    The MAF is from a 2nd Gen. Lightning (99-04).

    Thanks again :)