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Re: Voltage is down on our chrysler town and country if...
Possibly. the voltage regulator on SOME of these models was built into the pcm, but most were not. if your alternator is producing insufficient power, chances are it is an alternator issue. good luck!
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This is a computer controlled charging system ! You should have one heavier wire on the back , this comes from down at the starter an has battery + The other two come from the PCM - powertrain control module !
T&C's seem to have really bad electrical systems. Could be either the voltage regulator or the alternator, most likely the alternator. Most battery shops will diagnose for free.
if you getting 12.4 volts with no power load and engine goes down to 7-8 volt should be between 13-14 volts on idle would say the voltage regulator has gone.some are replaceable but most are not so you will need a new alternator or a secondhand one that is know to be working.
Hello
The reason the battery light is on is that the charging system voltage is below the battery voltage, this means the charging system is not working correctly, since you already replaced the Alternator for I assume the same problem, unless you got a defective rebuilt (which is poss if bought from Autozone or one of the other discount parts stores) the charging system problem is not the Alternator but lies elsewhere in the electrical system. Use a volt meter and check the voltage at the battery cables with the engine running at high idle (at least 1000 RPM) the voltage should be at least 13.4 to about 14.2 Volts DC. This is also most likely the cause of the light that is on that you say looks like a pump due to the low charging system voltage. As to the radio it is in theft lock, this happens anytime the battery is disconnected, you will need to enter the unique security code for your radio, if you are not the original owner this may be a problem, as the little card with the code and the instructions to enter it often gets misplaced. You will likely end up at the dealer who can access the Chrysler factory computer and retrieve the code, there may be a charge for this.
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