Electrical Where Is It

Discussion in 'Fox 5.0 Mustang Tech' started by bertman, Oct 2, 2013.


  1. bertman

    bertman Member

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    In the pic that i posted, can anybody tell me where that risistor is and its purpose. I have an 87 mustang. Just curious
     

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  2. jrichker

    jrichker StangNet's favorite TOOL SN Certified Technician Founding Member

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    That is a 22,000 ohm resistor for the IDM (Ignition Diagnostic Monitor) circuit that tells the computer that the PIP sensor is working correctly. Note that the diagram below shows it's approximate location.

    Diagram courtesy of Tmoss & Stang&2birds

    [​IMG]

    See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring http://www.veryuseful.com/mustang/tech/engine/ Everyone should bookmark this site.

    Complete computer, actuator & sensor wiring diagram for 91-93 Mass Air Mustangs
    http://www.veryuseful.com/mustang/tech/engine/images/91-93_5.0_EEC_Wiring_Diagram.gif

    Complete computer, actuator & sensor wiring diagram for 88-91 Mass Air Mustangs
    http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

    Ignition switch wiring
    http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

    Fuel, alternator, A/C and ignition wiring
    http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif


    Vacuum diagram 89-93 Mustangs
    http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

    HVAC vacuum diagram
    http://www.veryuseful.com/mustang/tech/engine/images/Mustang_AC_heat_vacuum_controls.gif

    TFI module differences & pin out
    http://www.veryuseful.com/mustang/tech/engine/images/TFI_5.0_comparison.gif

    Fuse box layout
    http://www.veryuseful.com/mustang/tech/engine/images/MustangFuseBox.gif

    87-92 power window wiring
    http://www.veryuseful.com/mustang/tech/engine/images/mustang87-92 PowerWindowWiring.gif

    93 power window wiring
    http://www.veryuseful.com/mustang/tech/engine/images/mustang93PowerWindows.gif
     
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  3. liljoe07

    liljoe07 Active Member

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    Should be along the firewall. I cant remember if the circuit from the TFI to the coil or the circuit coming from the coil to the tachometer has the splice in it. But its typically by the firewall, somewhere in the vicinity of the vacuum tree.
     
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