Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.
What brand alternators are you using?
How long are they lasting?
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How long are all of these aftermarket alternators lasting?
Do you own a digital volt meter?
At the alternator does the OG/LB and BK/OG wire match battery voltage with the key off?
Fuse 11 under the hood is the power for the OG/LB wire. So check that fuse and wiring for a break, below is a diagram.
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Thanks for double checking that. Do you have extra electronics on your vehicle that draw from the battery? What was the date that you installed the Ford Motorcraft alternator that you bought from your local dealer?
So far all the tests are pointing to the alternator to blame here, assuming those tests were done right. If it is the alternator then you can take the vehicle to the dealer and they will do the diag and repair on the alternator for free since this alternator comes with a parts and labor warranty.
Here are the tests they will run if you want to double check your work.
Hello again Chris here,