my alternator went out on my 1997 f-150 4.6l xlt so i replaced the alternator and truck ran fine for a week until my battery light popped on again this time it was accompanied by a check engine light as well. when i was driving down the road truck lost power and died on me killed a brand new battery. i opened the hood and the alternator power wire to solenoid was melted and the 175 amp fuse it it ran too had melted completely too. i replaced fuse and now truck cranks but doesnt start it has fuel but no spark now... why is this?
How long has your 1997 Ford F-150 had this problem?
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Hello, sounds like you need to replace any affected part - often times the alternator wiring connector must be replaced with an alternator replacement due to excessive heat and terminal damage.
There is a relationship between radio frequency interference from an alternator and engine ignition performance -- so correct the charging system perfectly first and then proceed with engine performance testing for lack of spark. Perhaps another fuse is blown that you haven't spotted yet.
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