Try changing the ignition module on the distributor.Shoud be bolted on the outside with two screws.( I think 7/32 or smaller.they do make a tool for it)It has the wires going to it.Also make sure the wires are in tight.I have seen some with the clip on the connector broken that make it appear it is all the way in the module. Also make sure the rotor is turning. Take off cap and crank over the motor to see if the rotor spins. If not you might have a broken distribuor gear or bad timing chain. also check coil wire to distributor cap.IF All these are good start looking at ignition switch(not key tumbler)in steering column and those connections or the computer(ecm).
Generally find fuseable links on a Ford connected to the battery side of the starter relay/solenoid.
repleace module on diserbuter.
Fuses, fuseable links and circuit breakers.
Not normally as the voltage is very low.
Sorry but your question makes absolutely NO sence whatsoever! do you mean that you have already Changed-(with an A, try using spell checker next time pal!) your battery with a new one and your vehicle still will not start? Have you checked ALL fuses and relays related to battery, starter, altenator, ignition and fuel pump? Have you checked ALL spark plug wires? distributor cap, spark rotor or coil pack wires? Have you checked for fuseable links and if your vehicle has any are they bad?
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Fuel lines may have lost their prime try turning key to "on" position for about 10 seconds without trying to start vehicle - Do this twice may be eough to prime fuel lines
location of fusable links Ford Ranger 1990 2.9
All fuseable links are on the passenger side on the inner wheelwell.
The fusable links are ususally located about 5 to 6 inches away from the starter on the harness.
yes they are fuseable links you should have one at the starter but if it backfired i would check the timing gears and chain to make sure you didnt mess the gears up and that it didnt jump timing
check all fuseable links and/or grounds