Yes a bad alternator can blow that fuse with a good fuse have the alternator and battery tested also make sure the battery cables are clean and tight.

Answered by saturntech9 (expert)
23,388 answers provided

I took out the fuse for the head unit and replaced the 10amp fuse for the alternator with a 15 amp fuse and the car is charging at 14.6 volts while running. I drove the car for about 15 miles w/out any issues. Tomorrow I will put a 10amp fuse back in the alternator slot and see if it blows. As soon as the weather clears (i don't have a garage) I will be removing the head unit and checking the wiring there. The battery terminals were clean and the grounds running off the battery looked ok. The alternator grounds are in the support structure for the radiator and I have to remove the bumper to get to them. Thanks for the advice and I will post new info when I have it.

Response from bamp78
1 question asked

Alright never put a larger fuse then comes factory otherwise you could cause bigger problems fires further damage etc.Keep me posted on what you find.

Answered by saturntech9 (expert)
23,388 answers provided

Yea i hear what you are saying. The difference between 5 amps when the line is probably rated for higher is negligible for a day or two. If the line blows w/ the 10a I will thoroughly go through all the wires to see if there is an actual short. I am moving to a major city w/ good mass trans in a few months and just need the car to last until I get there. I do appreciate the feedback...while I can fix most mechanical things on a car it's the electrical work that I don't have a lot of knowledge about. I will post updates this week as I work on it.

Response from bamp78
1 question asked

Keep me posted on what you find.

Answered by saturntech9 (expert)
23,388 answers provided