October 14, 2008when you step on the gas hard while driving the battery light flickers on then when i let out of the gas it goes away.the truck had a remaned alt when i bought it and i just replaced it with another new alt and it still does the same thing. the battery never goes dead and it has been doing this crazy thing for a month???? any ideas???
October 14, 2008That is strange. Are all your battery connections clean and good?
October 15, 2008yes they are and i also ran an extra 4 gauge wire from the alt to the bat. it seems it does this when the engine gets a load on it . could i have a coil shorting *or* something? when the light flickers the headlights dim also.i installed a volts gauge and when i step on the gas hard and the light flickers the volts gauge drops to arount 11.5-12 volts then it goes back to normal @14 v
October 15, 2008is the voltage regulator built into the alt?
October 15, 2008How old is the battery? Sometimes batteries can just cause weird problems even when they aren''t that old. Could have a cell going bad.
Not sure on the alt. question...
October 21, 2008Does it do this without fail *or* is it sometimes? Where does your ground cable connect to your engine? Having one on an exhaust manifold can cause this. If you do have your battery cable connected at an exhaust manifold bolt, the problem is due to a damaged cable caused by doing this, ground a new cable to the main block.