Question about Road Mice 1989 Ford Mustang Foxbody RM-08FDMGSXK 2011 Mustang GT Wirel

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No spark from the coil

I have a 1989 mustang gt when I try to start it, it will crank but won't fire. It has a MSD ignition box running to the coil, could this be a fuse? The coil is brand new but there is no spark from it. Please help!

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Could you take a picture of the coil pack showing the wires to the coil! Is there an after market alarm/immobiliser fitted? ? If you can probe dc supply to conform, you'll need someone to crank the engine while you test for power supply. .. also comfom fuel pump is running as immobiliser *if* fitted cuts power to both...

Posted on Jan 22, 2013

  • corey_shane
    corey_shane Jan 22, 2013

    It doesnt have an aftermarket alarm/immobilizer the ignition switch went out so I changed that but with the old switch when it went bad I had to hold the key slightly forward to move the car but as soon as I let go of the key it dies now with the new switch at cranks but no spark could I have shorted something out?

  • larryocon499
    larryocon499 Jan 23, 2013

    ok when you said the switch went bad, and explained movement of key! *thats just wear on key/barrel. ... im guessing this car is "your dream car" is it parked in your garage and you ( with no disrespect) clean/play around with it!! adjustments etc??? : ) ok its simple* you need to conform all fuses relays are ok 2nd block connector to coil pack pull back cable sleeve, you'll neefd a multi metter or even a 12volt bulb! anything you can probe to find power (if its there) most coils of this year power up on position two of ignition! ie dash lights no crank... (but may still time out so keep in mind) so what your looking for > is the coil getting power is the coil energizing! example .1 yes iv powrer at the coil pack ( voltage amplifier) but still no spark! possible faults =bad plug Leeds, bad plugs (all faulty very unlikely) but possibly anything is at this game... next resul>t you found no power at coil pack. possible faults I always start simple once again (fuses+relays) is the fuel pump running with ignition in position#2 is key chipped! is wiring ok, re-check block connector at coil! ! ..... (POWER @COIL) =FAULTY COIL, FAULTY LEADS, FAULTY PLUGS...... (*NO POWER AT COIL*)= BLOWN FUSE, FRIED RELAY, CHIPPED KEY *TRANSPONDER FAULT*, bad connection, bad earth to body may also result in fault.. was the key barrel moving around along with key wear!!?



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