I have a 1984 Ford Van Econoline E-150. Sometimes when I am riding along
the starter energizes. I turn off the ignition switch, disconnect the
small wire from the starter relay but the starter continues to turn. I
can only stop the starter by disconnection the starter cable from the
starter relay. I have replaced the starter and the starter relay but the
problem is still there. Have any idea what the problem could be?
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Possible. I has a Jet Ski that had a similar problem. A rust short was
bridging the starter relay & main battery power solder points. A few
minutes with a wire brush fixed that.
Replacing an ignition switch requires disassembling the steering column &
pulling the lock cylinder then the switch comes out. An electrical diagram
would prove very helpful & most if not all decent automobile service manuals
have them & a few even have them in full color detailing each wire color that
was installed during manufacture but such diagrams are rare.
But if it is the ignition switch, you should be able to see a voltage
with a volt meter on the starter. The ignition switch closes a switch,
which sends a voltage signal to the starter that causes the solenoid to
to engage the starter. So you should be able to determine if this the
ignition switch is open or closed pretty easily.
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