Ford Truck Lights Flicker

Generally flickering dash lights indicate an alternator replacement but this is often confused with a starter replacement.

Ford truck lights flicker.

This truck has battery temperature sensors in the battery tray dodge trucks cycle the pcm controlled voltage regulator on and off at a set voltage of 12 8 volts until the batteries reach a specified temperature this will cause dash over head and head lights to pulsate. The voltage should be over 13 ideally over 14 volts. The most common reason for flickering lights is a worn out alternator as one of the three rotating plates that generate electricity wears out. The problem is well known to ford and the cause is that there is a high resistance in the battery wiring harness from the central junction box under the bonnet to the b terminal of the alternator the high resistance from the 7 5amp fuse causes the alternator to pulse and this causes the flickering of the lights both insisde and out and on the.

The problem is worth looking into since flickering headlights can indicate a serious. So as the unit hits the dead spot the power wanes causing the lights to flicker. Automotive parts shops will likely have a machine to test the.