I have an 2002 ford ranger edge with a 3.0L and my battery light came on so i replaced alternator a month ago with a brand new one not remanufactured and i replaced the battery like in august. Yesterday my battery light came back on and i tested it and said no voltage. I looked at the fuses and they are fine and made sure the alternator was connected good. What could it be i have ordered a motorcraft alternator thinking i got a dud alternator from advance auto.

 

Warranty time
If it's only a month old take it back to Advance and have them test / replace it.

 

x2 why did you order another alternator? I just replaced mine with a new one and I have a Lifetime warranty.

 

i just got one from oreillys with a lifetime warrenty. i would pop it off and take it into an autoparts shop and have it tested. take the battery while youre at it

 

Your description is confusing. What said no voltage?

Take the alternator to a auto parts store that can test it. If it is toast, warranty replace the thing.

 

Check your wires going to the starter! I know it sounds weird but on my Volvo Big truck the other year I went thru three alts and 4 sets of batteries before they found the real problem. A bad connection on the starter, so the company spent a few grand to fix what ended up being a freaking bad connection.

PS.
That truck's volt gauge was going from 9 volts up to 16 volts. It had no rhyme or reason for the way it did it.

 

ok thinks for the info i got another one and going to put it on and hopefully i fixes it

 

check small 2pin connector on alt it gets brittle