Question about Ford F-100

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My 1977 ford f-100 was running now when i turn the ignition the engine does not turn what couyld be wrong i installed a new battery but after drivcing 60 miles it cranked up slowly but started then i got home and notrhing turned over

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Sounds like it needs an alternator to me.At least check the belt and make sure it is tight enough.If the belt is not broke and is tight,Autozone will do a free alternator and battery check.
Good luck! Greg

Posted on Sep 27, 2010

Testimonial: "what else could it be "

  • Greg McCarthy Sep 27, 2010

    The first reply by ginskie wasn't very good.If it's the fuse it won't even start.If it's the start relay it won't start.Misfire would result in backfire(lean mixture,too much air,noticeable increase in temperature guage) or at least herky jerky or reduction in power.Ignition module or switch would not start because it is an input to the start relay which ends in a 12v signal to the PCM telling the rest of the system all go.A new battery drained that fast is 99% of the time alternator.That guy just listed all the input components to the PCM and 1 indirectly controlled by the resulting output of the PCM.The signal out of the PCM tells the fuel pump and auto shutdown relay all is good and enables the ignition coil and fuel injectors.


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In your case there so much things that could be wrong.
here are some of the causes! It might be that you have,
weak starter, misfiring (spark plug) or coil, does you battery gets drain? must be your aternator, fuses or relay, but sometimes most likely s the ignition module or switch. try chcecking this fisrt and what would happen. Then let me know If I could be more help... best of luck.


Posted on Sep 27, 2010


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