Amp turns off... still

[AnthonyO 10+ year member]

On the alternator correct

yes

 

[Spazz131]

So thought I would update this.
I traced the alternator wires and found no issues, checked my terminals again and tightened anything and everything down, redid some ring terminals, but no change. I've decided to bring it to my stereo guy to see if fresh eyes help. Before I bring it to him though I will be swapping in a new regulator and possibly opening up the spare alternator and putting my electrical engineering to the test. Anyway I'll get back when I have an update

 

[Spazz131]

So I thought I'd update this.

I ended up finally fixing the issue after buying a mechman alternator. so there you go my fellow f150 5.4 owners.

Only the mechman regulator seems to be able to keep up with the the truck.

For documentation sake I fixed it well using a 1000cca agm battery, 1/0 cable all the way through the electrical system, and a belt that is 1/2 inch smaller then the original (2008 ford f150 lariat fx4)

 

[metalheadjoe 10+ year member]

So I thought I'd update this.

I ended up finally fixing the issue after buying a mechman alternator. so there you go my fellow f150 5.4 owners.

Only the mechman regulator seems to be able to keep up with the the truck.

For documentation sake I fixed it well using a 1000cca agm battery, 1/0 cable all the way through the electrical system, and a belt that is 1/2 inch smaller then the original (2008 ford f150 lariat fx4)

Maybe i missed it; what brand were your first two high output alternators?

 

[Spazz131]

Maybe i missed it; what brand were your first two high output alternators?

One was a oem ebay rebuild and the other was from a company called js alternators

 

[metalheadjoe 10+ year member]

One was a oem ebay rebuild and the other was from a company called js alternators

Both from ebay sellers? Not hating just searching for cheaper options for my next build.

 

[Spazz131]

Both from ebay sellers? Not hating just searching for cheaper options for my next build.

No one was actually its own website. Said they were building out of Illinois or something