Electric surge while accelerating

Asked by Jul 30, 2019 at 07:14 AM about the 2001 Ford F-250 Super Duty

Question type: Maintenance & Repair

Hey I have a 01 Ford F-250 when I hit 2000
to 2500 rpm my battery light and abs light
come on radio goes static my a/c pumps out
a lot more just changed alternator and
battery is a year old any suggestions

2 Answers

545

Most likely a bad voltage regulator

109,645

The alternator you got could be bad. The voltage regulator is part of the alternator. Any easy test would be monitor the battery voltage when the engine is revved to 2,500 rpm. Voltage should be around 14.0 volts plus or minus 1 volt. Also take a very close look at the battery cables, they need to be absolutely clean and tight.

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