2000 Ford Ranger Support Question
2000 Ford Ranger Support Question
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Question posted by joelong59 on December 15th, 2015
Alternator Problems
I have put a new battery change the alternator and when I take the negative lead off the battery the car still go dead what could the problem be
Current Answers
Answer #1: Posted by kcmjr on December 17th, 2015 1:04 AM
kcmjr
Member since:
May 5th, 2011 Points: 4,254,255
Member since:
May 5th, 2011 Points: 4,254,255
An old school test was to disconnect the negative lead from the battery when the engine was running. If the car died the issue was the alternator, if it kept running it was the battery.
In modern vehicles this no longer holds true. Many newer electrical systems require the battery in-line as a voltage reference and won't function without it. In fact disconnecting the negative lead while the engine is running can cause serious damage to the electronics on some vehicles. Fuses can blow and electronics can be damaged. https://en.wikipedia.org/wiki/Load_dump
It used to be that the battery was only used to start the car and keep the electronics alive when the vehicle is off. The car would run fine on the alternator alone. Today it varies and the system should be checked with all components connected. A load meter is connected and can determine if things are working properly. You can go to any auto parts store to have this done for free while you wait.
I recommend you try that before doing anything else.
Good luck...
Licenses & Certifications: Microsoft, Cisco, VMware, Novell, FCC RF & Amateur Radio licensed.
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Owner's Manual - Page 30
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Owner's Manual - Page 35
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Owner's Manual - Page 37
...
SHUFFLE
1
2
3
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5
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Volume/power control Press the control to turn the audio system on , and then revert to the clock. VOL - Anytime that the media is changed, (new radio station, etc.), the media information will always be displayed.
Owner's Manual - Page 49
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Owner's Manual - Page 52
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Owner's Manual - Page 65
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Owner's Manual - Page 67
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Owner's Manual - Page 103
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Owner's Manual - Page 134
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Owner's Manual - Page 137
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Owner's Manual - Page 142
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Owner's Manual - Page 152
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Owner's Manual - Page 154
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Owner's Manual - Page 155
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Owner's Manual - Page 179
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Owner's Manual - Page 180
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Owner's Manual - Page 181
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Warranty Guide 1st Printing - Page 30
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