Why is my charging system goes over 15 volts when I raise rpm

Asked by Apr 14, 2016 at 08:45 AM about the 2005 Dodge Ram 1500 SLT Quad Cab LB

Question type: General

charging system goes over 15 volts when I apply foot to throttle at 1k and
above. at idle its at 14.4 confused please help?

4 Answers

1,170

check your voltage regulator..and/or maybe alternator..some voltage regulators are internal (inside alternator)..

40,455

How high does the voltage go? 14.0 to 14.6 is normal, but anything much higher than that may indicate a bad alternator or voltage regulator (likely built in to the alternator). Very high charge voltage is hard on light bulbs, batteries and other electronic items. I would use a volt meter to measure the voltage, engine running, at the battery. If out of spec. get the alternator tested.

40

Most likely bad voltage regulator like mentioned. It can also overcharge battery, cause warning light to come on or give bad reading on gauges.

10,610

in some dodges voltage regulation takes place in the pcm.

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