Question about 1982 Ford F 250

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What powers the coil in a 1978 ford 460? I bought

What powers the coil in a 1978 ford 460? I bought a new coil and ballast resister and the battery is fully charged but still not getting spark to the coil.

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  • 33 Answers

On the fire wall is a black or chrome square box about 4 x 4 inchs . this is a fuse block assembly that transfers power .

Posted on Jul 02, 2009

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I'm trying to find out if a 1978 Lincoln I'm wanting to buy with a VIN of 8y89a924706 has an" A" block 460 engine in it, is that the engine it came with?


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Why do you only have spark when ignition switch is turned from start to run on 1978 ford mustang?


I presume that you mean power out of the switch when the switch is in the run position and not the start position, correct?

The situation can be understood by knowing that an ignition coil needs to run in the 8 to 10 volt range. To acheive this, there is a ballast resistor that drops the voltage, durning normal running...This is the circuit that is fed with power from the switch in the RUN position...

During Start, system voltage drops, as you can imagine, with the load of the starter, during this exact time, the ballast resistor would not output enough voltage to fire the ignition, SO, there is a bypass circuit, actuated during starter engaugement, that feeds full battery power to the coil. this bypasses the ballast resistor, and provides enough voltage for the coil to work.

Doc

Sep 16, 2009 | 1982 Ford Mustang

1 Answer

My 1978 Ford F250 with a 460 V-8 engine has a broken belt


yes i do but i will have to get back to you keep in touch i have a 460 but i will have to look at it lol and get back to you


Submission Mike

Aug 14, 2009 | 1982 Ford F 250

1 Answer

1978 ford vacuum diagram


if you have not recieved the info you need, send me an email address to eric.fleming@deacon.com i will send you a copy of the mitchell manual spec. i would need to know engine size, axle etc. or if you have the calibration number.

Feb 21, 2009 | 1982 Ford F 250

3 Answers

1981 ford f100 2wd


This sounds like a telltale choke issue. You running carburated right?
If it is what i think it is you have a choke thermostat on the carb. If so check the votage on the wire and if you have power then the choke thermostat has to be replaced. you can do a manual set of the choke behind the carb just to see if this is the problem.

Oct 19, 2008 | 1981 Ford F 100

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