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Ask Glenn Your Own Question
Glenn, Senior Master Ford Tech
Category: Ford
Satisfied Customers: 1746
Experience:  26 years exp with Ford Products, ASE Master Auto & Truck + advanced engine perf L1/L2 Gas & Diesel
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Ford f 150 not charging replaced battery and alternator

Customer Question

ford f 150 not charging replaced battery and alternator
Submitted: 7 years ago.
Category: Ford
Expert:  Glenn replied 7 years ago.

hello there,


You need to make sure you have 12volts to the alternator and that 175amp fuse is OK on the output side. see diagram



Customer: replied 7 years ago.
is the 175 amp fuse on fire wall ?
Expert:  Glenn replied 7 years ago.
Yes there are 2 large connections at starter relay, take the tape off and those covers come off, fuse is there.
Customer: replied 7 years ago.

about where is the in line fuse #2?


Expert:  Glenn replied 7 years ago.
You will need to follow that orange/light blue wire from alternator, it states close to alternator, and I can't seem to remember ever replacing one.
Glenn and other Ford Specialists are ready to help you
Customer: replied 7 years ago.
thanks your help was useful not fixed yet but will be back
Expert:  Glenn replied 7 years ago.
Sorry, if you would give me the voltage readings at each & every terminal of the alternator with the engine running..& battery voltage. I can get a better idea where to go next.