I have a 85 f150 I was driving down the road and all (dash and head) lights would flicker thought it was because I hit a bump but not the case
Got to house and it still flickered just idling
each time they flickered there was
humming coming from the motor
Check your belt,s,if belt,s are good and tight,then check the battery termanal,s to be tite,and then have your battery and alternator checked.
Made new ground for altnator and its working fine now would you happen to know how to check the oil pressure gauge stopped working on me
Check the oil pressure sending unit.
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