Question about 1993 Ford Ranger SuperCab

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Charging system woes continued...

Ok the dashboard voltmeter gauge normally sits at the "A" in Normal when the system is charging (and theres 14.5V at the battery). When the system is NOT charging, the dashboard voltmeter sits at the "N" in Normal. The voltmeter at the battery reads 12.2V at this time. I know that its charging and not charging. You can hear the difference in engine pitch. An alternator with voltage induced and charging has a magnetic field, making it harder to turn and putting more of a load on the engine. When it stops charging the engine idle speeds up. I know its working/not working when I bang on the steering wheel, it's not just the gauge. As I said i've spent 3 days on this and i'm no farther than I began. I'm real frustrated with it.

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Then you have a problem in the dashboard could be the circuit board behind the dash if you would like to i will tell you how to eliminate the dash from the charging system or install a straight wire from the ignition power to the ignition side of the alternator bulb,
but if you still want me to tell you how to elimiated the dash from chargin system let me know
of course this will be a mikey mouse but will take care of your problem.

Posted on Jun 03, 2008

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Posted on Jan 02, 2017

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When braking, dash panel acts up. Speedometer goes to 0 and then back to normal. Clock and Radio lights dims and comes back, or goes out completely, comes back on after a minute.


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Not sure I follow you. Nothing should be on at night with the key switch off.
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And have you had the charging system checked on the truck ?
It should be charging 13.8 volts or more with the engine running.

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You first have to determine if it is a charging of the battery issue, or the battery itself, or if there is an unintended drain on the battery while sitting.
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If you have a bright light on the tester, just start pulling fuses out one at a time, till light goes out. The circuit for the fuse that turned the testlight off is the problem circuit. Something on that circuit should be off and not drawing power, but it is.
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