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17 answers

The ignition switch or linkage to engage the switch elsewhere is bad.

2006-08-24 15:12:33 · answer #1 · answered by Silverstang 7 · 0 0

On the positive side of the coil, there 2 wires in one connector. One of these wires comes from the "r" terminal on the starter. It sends 12 volts to the ignition system while cranking. The other wire comes from the ign. terminal on the ignition switch. It is resisted to cut down the voltage to the coil after the engine starts. Do this, turn the ign switch to run, get a test light and hook the clip to the battery ground, touch the probe end to the pos (+) side of the coil. If the light is not on, you have a bad switch, or an open circuit from the switch to the coil. There is a connection block at the firewall on the left side of the truck, It has the coil feed wire in it + most of the other external wiring. Sometimes there is a problem with corosion in this block. Take out the bolt in the center of this block (I think it is 3/8 in.) and check for green corrosion.

2006-08-24 15:41:00 · answer #2 · answered by B H 3 · 0 0

There is a resistor to the coil from the ignition switch called a ballast resistor. When cranking because starter draw there also is a starter bypass wire when the starter is cranking to provide more volts to the coil on start up. Located on the firewall porcelain white color and held with one screw on a metal strap around the middle two wires push on one into the resistor from the ignition switch and the other out of the resistor to the coils + side - side gos to the points inside the distributor. Coil power resistance wire vibrated and broke or just fell off, or became unplugged. And the resistor could have burnt out. I might have replaced five of them in 40 years Good hunting! easy

2006-08-24 15:22:01 · answer #3 · answered by John Paul 7 · 0 0

The ballast resistor is bad. I don't know exactly where it is located on that model. When the starter is engaged you get 12 volts to the coil, when you return the key to start, the current flows through the ballast resistor to reduce voltage to the coil. With the resistor open, you have no voltage to the coil with the key in the run position.

2006-08-24 15:17:55 · answer #4 · answered by eferrell01 7 · 1 1

It sounds like a fuse or fuse link for the ignition switch run circuit is open, or the ignition switch itself is bad. Get a wiring diagram and a test light and check to see if you have power...

2006-08-24 15:23:07 · answer #5 · answered by wright works 2 · 0 0

I agree i would have to say the resistor is burned up and is no longer allowing voltage to the coil with the key in the run position.

2006-08-24 15:46:46 · answer #6 · answered by Ashley 1 · 0 0

Agree with the answers you are getting. It has a start (12 volts) and a run position (voltage reduced through a resister). Your ballast resister is probably bad, replace it.

2006-08-24 15:21:46 · answer #7 · answered by oklatom 7 · 0 0

turn ignition on and put a test light on the coil + terminal,if it dont light trace the wire back to the ballast resister and check the ig switch side.If it then lights the resistor is bad and if it dont light the ignition switch is bad

2006-08-24 22:12:15 · answer #8 · answered by frank m 5 · 0 0

got a broken wire that goes to the starter from the battery somewhere see if any of the wires came off or got burned by the starter. the purple one , and the cable to the battery+

2006-08-24 15:24:07 · answer #9 · answered by mike L 4 · 0 0

could be electrical in the ignition switch or timing chain has sliped or broke= if motor will turn over as long as the key is turned & held on but motor shuts off when relased it is the timeing
happy day
old geezer

2006-08-24 15:20:11 · answer #10 · answered by Charles W 6 · 0 0

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