Posted by Steve@Advance on October 25, 2014 at 20:11:59 from (107.203.134.67):
In Reply to: deutz dx160 posted by rummm64 on October 25, 2014 at 18:15:27:
Have you checked the voltage on the "bat" side of the ignition switch? Could be the power isn't making it to the ignition switch. Just a matter of tracing it back.
You're not looking for a "short", that would be a wire going to ground. You're looking for "high resistance", a bad connection. Not likely to be in the middle of a wire, but at a connection, like a corroded end connector, a plug together connection, etc. Look for heat discolored, melted plastic, green stuff growing out of a connector... Might want to go at it from the battery end, see where the incoming power from the battery goes, should go to a power distribution block, branch off to various components. You are on the right track checking for voltage drop under load.
I'm assuming the starter is probably a Delco (or similar) with the plunger type solenoid on top of the starter. Those solenoids draw a lot of current, therefore expect to see some voltage drop. Even when everything is right you're still reading the resistance of the wire, so the farther from the battery you get, the more drop you'll read.
This is a common problem with those type starters. Why did it work for ever then decide to start acting up? A mystery of the universe... A solution is to mount a Ford type solenoid down close to the starter (which requires much less current to actuate). Use the wire from the neutral switch to pull in the Ford solenoid, connect the power lugs with 10ga wire from the battery terminal on the starter, back to the terminal where the original start wire was. Should solve the problem.
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