Alternator fault, 12.6 should be min on fully charged battery 14.v min should be when the engine is running. when engine is turned off the battery should hang around 13.6 volts and drop steady to 12.6- 12.8 volts and stay there. faulty or damaged battery can damage the alternators regulator. or the bushes in the alternator. also check the earth from the alternator housing to the shell and battery and same with the positive wire from the alternator to the battery, battery should last 5 years but no more some don't even last 3 years, alternator that depends on how meany miles you do or not do as not meany miles the battery is always on charge and use from lights etc that put strain on the alternator. if you dont do meany miles put a larger battery on the vehicle, this will use less power to start the engine so the alternator can re charge on shorter journeys.
SOURCE: Manual code retrieval for 1989 plymouth voyager 3.0 v6 engine
Hi Wayne, what you do is turn the key to the "on" position and back to "off". Do this three times. The engine light will flash. It will flash a certain amount of times, pause, then another set of flashes. The first set of flashes is the first number of your code. The second set is the second number. For example, you see 5 flashes, your first number of your code is 5, and so on.
SOURCE: 97 voyager van headlights and dash lights not working
There is a body control module that may cause this issue, it has the ability to be tested, have that done first.
SOURCE: where is the voltage regulator on a 1999 plymouth
Just to make it clear...I didn't say that the regulator was drawing power, ranthe that if the alternator checked out, the regulator may not be allowing it to charge properly.
SOURCE: 1999 voyager van "battery" indicator
check alternator for proper output, you can buy a cheap meter at auto parts store, or check for corroded or loose connections
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