Question about 1989 Ford Bronco

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My bronco has a short in that have not been able to find for a long time and now i have to jump start it just to get it started but after i shut it off it immediately has no power at all, not even enough to turn the gauges on or to prime the fuel injectors

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  • Ford Master
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It sounds more like a bad ground then a short Hears how you can tell You will need a mulity meter if you don;t have one you can get them at most parts store you don;t need to spend a lot 20 to 25 dollarsset it on 20 volts dc disconnect the negitive cable from the battery take the red lead from the meter put it on the red teriminal on the battery and the black lead from the meter and put it on the engine block or any good engine ground if you can read voltage something is shorting because olny the positive side of the battery is hooked up and it should;nt have a path to ground If thats ok set the meter to OHMs this will test your engine ground Toucheighter meter lead to the negitive cable you can leave it disconnected from the battery or not it dosen;t matter and touch the other meter lead to the engine it should read 000 if it dosen;t that means that is resitance in the ground cableand there shouldn;t be Ive sean this problem before ford had problems with the quilty of the copper wire they used in the mid to late 80siv;e sean ground cables that looked fine on the out side but inside the jacket they were all rotted out But test it its the olny way you are going to find out with spending a ton of money at some shop And let me know how you do and i can narrow it down even better for you good luck

Posted on Nov 09, 2010

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Have a 1988 ford bronco 2 9 engine that when a sparkplug is removed it will start but run rough.when plug is put back in it will not start at all.


Does it turn over and just not start or does it not turn over at all with sll plugs in it? Try to jump start it with another vehicle. Your problem could be a weak battery or starter.

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I have a 1985 ford bronco that want start! i have fuel,ihave spark,ihave correct timming marks. i have a new coil,new battery,new starter, new fuel pressure regulator and it want start?


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looks like you burnt the fuseable link from the alternator . you need to check the voltage at the back of the alternator on the red heavy wire with the battery fully charged and key off you should have battery volts at this terminal and if there is voltage you need to put a load on that wire with a 12 volt light bulb. . the bottom line is your charging system isnt working . so we need to find where it has lost its connection. let me know if this doesnt work and ill send a wiring diagram with directions.

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