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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

5.0 Conversion To MAF

  • Thread starter Thread starter howie1145
  • Start date Start date Dec 12, 2011
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howie1145

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Jun 21, 2011
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Dec 12, 2011
#1
  • Dec 12, 2011
  • #1
I'm a newcomer when it comes to "new" mustangs, my experience is in classic mustangs (64 1/2 & 67)

I have a '67 Mustang convertible and I am trying to install a engine from an '87 5.0 Mustang EFI use in my class '67 convertible.


I am trying to make it a Mass-Airflow system, I have an engine wiring harness from a '93 Mustang and a A9L computer. The problem I am having is I can't figure out wiring, how to hookup the ignition to sync with the computer so the car will start.


Thanks again for everyones time and help. thanks all !!!
 

jrichker

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Dec 12, 2011
#2
  • Dec 12, 2011
  • #2
Duplicate the wiring from a 5.0 91 EFI Mustang.

Starter solenoid wiring for 86-91 Mustang


Use 30 amp fuse for two 14 black/orange gauge wires from the starter solenoid to the EEC relay
Use a 20 amp fuse for one 12 gauge wire from the starter solenoid to the fuel pump power relay.
Use a 10 amp fuse for the 16 gauge red/green wire from the ignition switch to ignition coil and TFI.
Use a 10 amp fuse for the O2 sensor heater circuit orange/yellow wires.

Be sure to ground the two black/white wires coming out of the computer to the battery negative cable pigtail.


Diagram courtesy of Tmoss & Stang&2birds



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.

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

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

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

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 & pinout
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
 
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