Don't know what to say, haven't run into this yet.
The one thing that comes to mind is if someone replaced the starter with the wrong one. Basically put an automatic starter when you should have a standard
tranny one.
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1968 Mustang coupe, Acapulco Blue, 289 2v, C-4, Power Steering.
Hopefully a 1969 convertible or Sportsroof (non Mach or Boss) for next Mustang project
Trying to find my father's 1973 Mustang Grande he bought brand new. 3F04F126773 last known registration and title was in New Jersey, 1982.