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  1. Doug's 73 Mach1

    Parts For Sale 71-73 interior, exterior and chassis/ under hood parts

    I have the passenger remote control mechanism but not the mirror body. The mechanism including the mirror itself can be fitted to a 71-73 passenger racing mirror body. I don't have the bezel for the remote control joy stick, but it is the same as that for a driver remote mirror. You will need...
  2. Doug's 73 Mach1

    Help ID seat pans?

    I believe seat pans for coupes and convertibles are taller than the ones used on Sports roofs/ Mach 1s. That may explain why they are taller if you are fitting them to a Mach 1 or Sports Roof.
  3. Doug's 73 Mach1

    Help with factory A/C belt tensioning

    There is a product called "belt dressing" that I used years ago. It is an aerosol spray you apply to the tapered belt surfaces that gives the belt better grip on the pullies and reduces/eliminates squeaks. Got it at a local car parts store. Idler pully and or/ AC clutch bearings can also...
  4. Doug's 73 Mach1

    A/C Heat help

    Here is the diagram out of the 73 shop manual. As mentioned already the valve in the engine compartment should be normally open. Vacuum should close it when the temp lever is moved all the way to cool. The temp control cable connects to a pivoting arm, the arm pushing the water valve vacuum...
  5. Doug's 73 Mach1

    Help with factory A/C belt tensioning

    There is typically a 1/2" square hole in the front of the adjustment bracket for tensioning purposes. I use a 1/2" short ratchet extension on my ratchet to hold the belt tensioned while tightening the bracket hold down bolt. Mine has a 351C engine.
  6. Doug's 73 Mach1

    Clutch Equalizer Bar

    The switch mounted on the transmission made contact only when the transmission was in gear (forward or reverse) and not in neutral. So the the light and buzzer only come on with the trans was in gear with the ignition on and the driver seat belt not extended (passenger seat also if occupied...
  7. Doug's 73 Mach1

    Clutch Equalizer Bar

    All 73s had it, and I think 72s had it starting about mid year according to the 72 wiring diagram.
  8. Doug's 73 Mach1

    Clutch Equalizer Bar

    You may also need a starter, they are different than the one for an automatic. The "Z" bar pivots will be needed also, one mounts to the engine/bell housing area and the other to the frame and the bearings that go on those. Also the rod the connects the clutch pedal to the Z bar and the rubber...
  9. Doug's 73 Mach1

    Full size deflated spare lock

    It was part of the appearance protection package option I believe. Also available from a Ford dealer parts dept. If part of the option package it's key was the same as the trunk key and if you had the optional convenience group the same key was used for the glove box door. The appearance...
  10. Doug's 73 Mach1

    Can I repair this?

    I have one of these if interested $100 plus shipping.
  11. Doug's 73 Mach1

    In Park, when pressing the brake pedal the idle goes up...

    The standard 73 Q code was equipped with a 4300D carb that included an electric solenoid that held the throttle open a bit while the ignition was on. Idle speed would be set with the solenoid energized. When the ignition is off the solenoid retracts and lets the throttle close more fully...
  12. Doug's 73 Mach1

    Parts Wanted Alternator Wiring harness

    Just checked, the version I have is for the 70 AMP alt. 70 amp alts are only used on 73s with rear defrost.
  13. Doug's 73 Mach1

    Parts Wanted Alternator Wiring harness

    I might have one. 70 Amp alternator? Or a less amp one? The connection at the alt is different between the 2.
  14. Doug's 73 Mach1

    Windshield trim confusion

    Mine is 3 piece also, I have excellent side pieces available, but not the center piece. The windshields are different between Mach 1s and coupes/convertibles. As far as I know the bright trim is not interchangeable between them.
  15. Doug's 73 Mach1

    This has got to be one of the strangest optioned cars I've seen

    The 3/4 vinyl roof was an option for 71 an 72 also, although quite rare. 73s had that option prominently displayed in the Mustang sales literature, 71 and 72 did not. I think that is why a lot more 73s have it. 71, 72 and 73 early production used a bright metal black and shinny trim (like...
  16. Doug's 73 Mach1

    1973 351C-4V Engine Gauge Feed Wiring and Vacuum Hose Mystery

    The two wire connectors go to a EGR cut out solenoid mounted on the driver side valve cover inboard front corner. The 73 wiring diagram shows the connections and the solenoid. 4 speeds for 73 also used another emissions related 3 port valve mount on the passenger side rear corner area on the...
  17. Doug's 73 Mach1

    Whats this part?

    At idle vacuum to actuator pulls the door closed letting the snorkel be the only air inlet to the air cleaner. When accelerating intake manifold vacuum is not as strong and the actuator internal spring pushes the door open letting air also come into the air cleaner along with the snorkel air...
  18. Doug's 73 Mach1

    Drip Rail Molding Seal

    3M strip caulk does a good job. Great for sealing drip rail moldings to the body also and other places...
  19. Doug's 73 Mach1

    Convenience Wiring Harness

    The circuit breaker should be connected to the battery side of the starter solenoid. The black yellow dot wire to the circuit breaker and have power all the time. The circuit breaker/ black yellow dot wire feeds power windows and rear defrost (these are only activated with their relays...
  20. Doug's 73 Mach1

    Guess the weight

    Wow! This is great information. First Ford publication I have seen with HP and torque ratings for 73s plus a ton of other very detailed information. Thank you much !!
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