I have a 2000 ford ranger i just put a brand new alternator in aand a new battery put i still had a pulsating battery light on my dashboard but its a brand new alternator i had it running out in my driveway for about a half an hour and it turned off by itself because the battery died because the alternator couldn't keep it charged i don't know what it is and its pissing me off please help me please i beg u i really need to try to figure out what it is

Have the alternator and battery tested. It IS possible that one or both could be bad. That's why they have warranties.

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01 Edge Ext Cab
4.0 4x4 White

Mods:
Custom Winch Bumper, 9000lb winch, Custom Skid Plate, Custom Rock Sliders, Off-Road Lights, Explorer: OHC, Auto Dim Mirror, Lighted Vanity Visors, Power Seat Rails and EATC. Other little things I will remember to add later.

Check the leads coming out of the alternator they could possibly be broken or frayed also it could be a ground problem, have the bat and alt checked first.

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1994 Ranger 4.0 4x4 ext cab 5sp manual
Dual Flowmaster Exhaust
31x10.50 soon to come
5% tint on back windows
35% on doors

1997 4.0 4x4 auto (sold)

Alright thanks its just that i just replaced the alternator atleast two hours ago and the battery is new i'm going to the dealership tomorrow to see that they can do

Let us know I'm curious to know

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1994 Ranger 4.0 4x4 ext cab 5sp manual
Dual Flowmaster Exhaust
31x10.50 soon to come
5% tint on back windows
35% on doors

1997 4.0 4x4 auto (sold)

alright i'll keep u posted on what happens tomorrow i'm just getting fed up with it

i just put a brand new alternator in my truck two three hors ago and and it still dosen't keep my battery charged and causes my battery light on my dashboard to pulsate and be bright red and my battery just dies someone please help me

i would get the altinator checked alot of them are refurbished. so check the wires, amd the ground.. good luck

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1999 Ford Ranger
XLT Reg Cab 2WD
2.5L 5Speed

i am i'm going to the dealership tomorrow and thanks i'll keep everyone posted

found that the new alternator that i bought from pepboys has also become bad and my truck was running off strictly battery so everyone on here don't buy an alternator from pepboys they are junk! i'm taking back the alternator soon and going to buy one from advanced auto parts my number one source for parts for my truck.

Had the same thing happen a few times before. I've installed car audio for a long time and many people would bring in an older car with 100K+ Miles on it. We would suggest getting a new alternator for the amount of power needed. Instead of purchasing a performance type setup, the customers would buy these refurbs. About 1 in 3 gave us problems. Of course they pointed fingers at us but it was almost always the refurbed alternator.

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~-SOLD-~
04' Edge 6 Cyl 3.0 5 Speed Manual 107K Miles
3" Body Lift - 33" All Terrain Tires
Drop In K&N Filter - Flowmaster - XM Commander Satellite Radio