my 2011 F 150 Starts right up but amp gauge reads exremely low but when driving it very slowly comes up, No check engine light comes on.

Asked by May 01, 2017 at 04:36 PM about the 2011 Ford F-150 XLT SuperCrew

Question type: Maintenance & Repair

recently bought a used 2011 F 150 with 5.0 engine, the truck spins right over and starts fine no check engine light. All accessories work fine but when started the voltage/amp gauge reads extremely low and as I'm driving it slowly comes up but not all the way to normal range. Again no check engine light comes on.

1 Answer

7,505

you need a multi tester , you need at least 12.5 V from the batt. at rest , and 14.5 when once you start it see if the dash matches the test , , the batts not going dead (yet) , did the batt. light come on the dash ? There's a gauge you can plug into your cig. lighter to get a second opinion on voltage . Or you could probably do the test from there it just wouldn't account for any voltage drops . Let us know what happens .

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