Welcome to Mustang Evolution.
|
  |
|
|
|
06-22-2009, 07:29 AM
|
#1
|
|
  |
|
Battery light?
|
|
Registered User
Join Date: Jul 2006
City: Tampa
State: Florida
Posts: 176
Thanks: 7
Thanked 2 Times in 2 Posts
|
So recently I've noticed when I come to a stop my voltmeter drops down a few notches when my car comes to a stop and the battery light comes on if I get around 3,000 RPM. I'm pretty sure this is due to me having a bad alternator. I had the battery checked this past Thursday and it was good, however the bat light still comes on when I get over 3,000 RPM and the voltmeter drops to about 40% of the gauge's level. So I suspect the alternator is going bad. This is the second one I've had and the car has 110K miles on it, but I just wanted to see if anyone else has had the problem before I go and take out my alternator. Thanks for your input.
__________________
 2002 Automatic 3.8L True Blue Covertible
MAC CAI, MAC Chrome Shorty Headers, MAC OR H-pipe, 40 series flows, 25% UDP, KB Strut Tower: Mach 1 Grill, 8 inch antenna, Limo Tint, Parchment LightBar, Chrome 18x9 FR500s 275/35/18, GT foglights, Clarion head unit, audiobahn amp, kicker sub & speakers.
|
|
|
|
 
|
Are you a Mustang fan? If so we invite you to join MustangEvolution.com. Once you join you'll be able to post messages in our forums and upload pictures of your Mustang. You will also be able to browse our site with limited advertisements as a thank you for joining our community. What are you waiting for? Join up now and tell us a bit about your Mustang!
|
|
06-22-2009, 07:39 AM
|
#2
|
|
|
|
Re: Battery light?
|
|
WTF^^...
Join Date: May 2003
City: Birmingham / Florence
State: Alabama
Posts: 30,643
Thanks: 18
Thanked 198 Times in 186 Posts
|
check the alternator and see if it is bad, I cant think of anything that would cause them to keep going bad really unless there is some wiring issues at work but I dont see that being a problem. |
|
|
|
|
|
06-22-2009, 08:24 AM
|
#3
|
|
|
|
Re: Battery light?
|
|
V8 POWA YEA!!
Join Date: Mar 2008
City: Baton Rouge
State: Louisiana
Posts: 1,228
Thanks: 7
Thanked 16 Times in 15 Posts
|
alternator forsure. do you keep going back with a ford one or aftermarket? |
|
|
|
|
|
06-22-2009, 08:46 AM
|
#4
|
|
|
|
Re: Battery light?
|
|
Registered User
Join Date: Jul 2006
City: Tampa
State: Florida
Posts: 176
Thanks: 7
Thanked 2 Times in 2 Posts
|
The car was under warranty when the first alternator went so I went with a Ford replacement. Is there an aftermarket alternator that is worth buying? I figure most alternators only have the life of about 50-70K miles anyway, but if there is a better alternator that you would suggest I will go with it, otherwise I'll just buy a replacement for now since my warranty is gone.
__________________
2002 Automatic 3.8L True Blue Covertible
MAC CAI, MAC Chrome Shorty Headers, MAC OR H-pipe, 40 series flows, 25% UDP, KB Strut Tower: Mach 1 Grill, 8 inch antenna, Limo Tint, Parchment LightBar, Chrome 18x9 FR500s 275/35/18, GT foglights, Clarion head unit, audiobahn amp, kicker sub & speakers.
|
|
|
|
|
|
06-22-2009, 09:56 AM
|
#5
|
|
|
|
Re: Battery light?
|
|
V8 POWA YEA!!
Join Date: Mar 2008
City: Baton Rouge
State: Louisiana
Posts: 1,228
Thanks: 7
Thanked 16 Times in 15 Posts
|
no not really but if you do go aftermarket, make sure its a good quality one like from Napa, Carquest, or Bumper 2 Bumper. Me i would go back with a motorcraft thou IMO. |
|
|
|
|
|
06-22-2009, 12:19 PM
|
#6
|
|
|
|
Re: Battery light?
|
|
WTF^^...
Join Date: May 2003
City: Birmingham / Florence
State: Alabama
Posts: 30,643
Thanks: 18
Thanked 198 Times in 186 Posts
|
|
|
|
|
|
|
06-22-2009, 07:02 PM
|
#7
|
|
|
|
Re: Battery light?
|
|
Registered User
Join Date: Jul 2006
City: Tampa
State: Florida
Posts: 176
Thanks: 7
Thanked 2 Times in 2 Posts
|
Thanks. I bought a new Motorcraft alternator for $215 (with a lifetime warranty). I have it sitting in the correct position bolted up, but its too dark now so I think I'll wait until tomorrow. However, I was having trouble with the belt tensionor. I bought a 1/2 inch breaker bar and tried to stick the square end into the tensionor, however upon further investigation the tensionor has some sort of Asterisk looking bolt, not simply square as I thought it would be. Has anyone had to do this? I'm pretty much stuck, because I can't obviously pull the belt over the new alternator pulley due to the tension. Help me please....LOL, but thanks for your help thus far.
__________________
2002 Automatic 3.8L True Blue Covertible
MAC CAI, MAC Chrome Shorty Headers, MAC OR H-pipe, 40 series flows, 25% UDP, KB Strut Tower: Mach 1 Grill, 8 inch antenna, Limo Tint, Parchment LightBar, Chrome 18x9 FR500s 275/35/18, GT foglights, Clarion head unit, audiobahn amp, kicker sub & speakers.
|
|
|
|
|
|
