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  •  » 67 mustasng C4 acting up

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    9/15/2018 5:21 AM  #1

    val fulesday
    I FYI 24-7

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    Registered: 9/23/2013
    Posts: 403

    67 mustasng C4 acting up

    the car sat up for 5 years , now all of a sudden the trans is acting up. won't down shift when you come to a stop tries to start out in what seems to be third gear.  modulator changed and still that's not the problem, I was told it could also be the governor. I remember years ago hearing that the ford auto. trans. has issues after setting up for long periods of time, anyone else hear that? any suggestions besides a total rebuild? the owner has been driving the car around town for about 6 weeks and now after replacing a broken motor mount and trans mount this started. 
     

     

    9/16/2018 8:09 PM  #2

    6sally6
    Hyper FYIFORD ADDICT

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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,880

    Re: 67 mustasng C4 acting up

    After that long time of "sittin-up"  did he drain & change the fluid/filter?!
    Might just be that simple
    6s6 

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    9/17/2018 4:42 AM  #3

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,530

    Re: 67 mustasng C4 acting up

    Yeah, any problem with an automatic the first step is to change the fluid and filter.  If the trans was rebuilt anywhere from the '90s onward just use regular Mercon III fluid.  If its original you need to use F-Type.  The original Ford frictions need tie F-Type, but starting in the '90s the aftermarket parts don't need it, and using it will actually make the trans shift very harshly. 

     

    9/17/2018 11:43 AM  #4

    Gaba
    Senior 24-7 FYI Addict

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    From: Van Alstyne Texas
    Registered: 1/15/2014
    Posts: 1,009

    Re: 67 mustasng C4 acting up

    how does the fluid look ? I agree with above, change fluid and filter. See how it goes..

    governor issue is simple to fix without even taking the tranny off the car.. governor is on the tail output shaft.. a sticky governor will cause issues, but a sticky goivernor may get unstuck with new fluid too ..

    If it aint broke, I have'nt tried to "Fix" it yet!
     

     

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