battery light comes on @ 3000rpm
#1
#6
Originally Posted by oreodog
On my 97 f150 the battery light has been coming on for a few months now but only when you get on the gas hard and turn the engine to 3000rpm or higher. Battery checks good and have 14.5v at idle. causing shifting problem, Is it the alternator?
My alternator started dying by giving me the ALT light only at high RPM. It then got worse to the point where the light was on all the time.
I found a guy on E bay who sold new alternators removed from vans that were converted to ambulances. They install a much larger alternator (the reason for the removal). It was a much better price than a new or rebuilt unit from any local store around here.
Chris
#7