67 Park/Neutral circuit fault -
Transmission Manual Lever Position (MLP) sensor circuit -
(M) Intermittent Park Neutral Position (PNP) sensor fault -
#67 no big deal The Netural safety switch prevents you from starting the car with it in gear. It contols power to the starter solenoid coil. If you can start the car in anything other than Park or Netural, the switch needs adjustment. and are you saying someone wrote 905.0 5 speed on the computer.
Wrong answer - the 67 code has nothing to do with the starter.
Code 67 - clutch not depressed (5 speed) or car not in neutral or park (auto) or A/C in On
position when codes where dumped. Possible neutral selector switch or wiring problem.
This code may prevent you from running the Key On Engine On tests. You can generally ignore
this code, since it has no effect on engine performance.
The computer wants to make sure the A/C is off due to the added load on the engine for
the engine running tests. It also checks to see that the transmission is in Neutral and the clutch
depressed (5 speed). This prevents the car from being driven while the computer is in test mode.
Key On Engine Running test mode takes the throttle control away from the driver for several tests.
This could prove hazardous if the computer was jumpered into test mode and then driven.
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
Vacuum diagram 89-93 Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg