Battery Light/Car Dying - Mustang Evolution

Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 08-20-2007, 12:12 PM   #1
Registered Member
Regular
 
megax29's Avatar
 
Join Date: Jul 2004
Region: Texas
Posts: 349
Send a message via AIM to megax29 Send a message via Yahoo to megax29
Battery Light/Car Dying

I've been having a problem with my car. I've got about 116k miles on it 2004 automatic and I've done all of the cars maintenance since it was born.

There are two symptoms: 1) When accelerating on any gear over 3k rpm the batter light flashes on dash until the next gear goes in and drops rpms under 3k. 2) Sometimes after running it and being parked I come back in to turn it on and it sounds like I got a dead battery.

I changed the plugs at around 90k and just this weekend I changed the wires. When changing the wires I saw the plugs had a white bluish film of stuff collecting on the plugs end. I think this means something about the engine running lean or rich. I'm not sure if it's related but if in fact it is running lean or rich it may be as a result of a major leak I have on my passanger side exhaust manifold. I've checked the batter life at autozone and it read good. What could it be?
__________________
V6 Midnight Black
CAI w/ K&N Filter, Tokico Complete Suspension kit, Single Flowmaster w/ turndown, GT rear sway bar.
megax29 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-20-2007, 01:52 PM   #2
Legacy Member
Legacy
 
Herbstang's Avatar
 
Join Date: Jan 2005
Region: Florida
Posts: 2,932
Re: Battery Light/Car Dying

you might have a power draw in the car somewhere. An easy way to find it is to disconnect the negative battery cable and connect a test light between the battery negative post and the cable.If the light turns on,you have a power draw.Then start removing fuses one at a time until the light goes out. When it goes out,you found the source of the drain and then you can go from there. If the light doesn't go out,then disconnect the alternator itself.

Dirty battery terminals ??? positive connector over tighten or to loose ??

How To Troubleshoot Your Electrical System - Mustang Monthly

Damn 100K I just broke 19,500 on mine
__________________

Mods-K&N CAI , True Dual Flowmaster 40, BBK Ceramic Shorties, 3.73 , 25% UDP, 3/8 Phenolic Intake Spacer ,Steeda Tri-ax, SCT Chip/Dyno Tune

Quote:
"Some people are like Slinkies; useless, but fun to push down the stairs."
Herbstang is offline   Reply With Quote
Old 08-20-2007, 03:48 PM   #3
Registered Member
Regular
 
megax29's Avatar
 
Join Date: Jul 2004
Region: Texas
Posts: 349
Send a message via AIM to megax29 Send a message via Yahoo to megax29
Re: Battery Light/Car Dying

I don't feel very comfortable in the procedure to take when using the test light. Is there some sort of guide that shows exactly what to do? I'd rather do it myself vs paying a mechanic $90/hr, min one hour.
__________________
V6 Midnight Black
CAI w/ K&N Filter, Tokico Complete Suspension kit, Single Flowmaster w/ turndown, GT rear sway bar.
megax29 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-21-2007, 04:29 AM   #4
Registered Member
Regular
 
Join Date: Feb 2007
Region: Virginia
Posts: 38
Re: Battery Light/Car Dying

my wifes 99 did that i told her to check the alternatir but she didnt. a few days l8r it fell out the bottom of her car. i replaced it and it was fine no light.
02vert is offline   Reply With Quote
Old 08-21-2007, 10:49 AM   #5
Moderator Emeritus
Legacy
Regular
 
SpectorV's Avatar
 
Join Date: May 2003
Region: Alabama
Posts: 26,049
Send a message via AIM to SpectorV
Re: Battery Light/Car Dying

you can take the alternator in and have it tested
__________________
2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List - Dyno Sheet
2012 Mustang 3.7L M6 (Kona Blue)
2011 Ford Edge Sport (Red Metallic)
SpectorV is offline   Reply With Quote
Old 08-21-2007, 04:58 PM   #6
Registered Member
Regular
 
megax29's Avatar
 
Join Date: Jul 2004
Region: Texas
Posts: 349
Send a message via AIM to megax29 Send a message via Yahoo to megax29
Re: Battery Light/Car Dying

I bought a used exhaust manifold cuz I had a leak and it'll go into the shop tomorrow. They'll check the alternator while it's in there. I'll follow up.
__________________
V6 Midnight Black
CAI w/ K&N Filter, Tokico Complete Suspension kit, Single Flowmaster w/ turndown, GT rear sway bar.
megax29 is offline   Reply With Quote
Old 08-21-2007, 06:46 PM   #7
Registered Member
Regular
 
crazeflier07's Avatar
 
Join Date: Feb 2005
Region: Florida
Posts: 274
Send a message via AIM to crazeflier07
Re: Battery Light/Car Dying

You dont have a aftermarket stereo do you? Maybe one of your power wires to your system is grounding out? Hope its something simple.
~Jon~
__________________

Sinister Six
1998 3.8L V6
Done So Far:
~CAI, True dual exhaust, UDPs, MGW Shifter, H&R springs, Stage 1 & 2 supension kit, performance rotors & pads, steel braided lines, 1 inch rear spacers, A.R. Rebel 17x9s with BFG rubber! :thumbs2:
crazeflier07 is offline   Reply With Quote
Old 08-22-2007, 12:51 PM   #8
Registered Member
Regular
 
megax29's Avatar
 
Join Date: Jul 2004
Region: Texas
Posts: 349
Send a message via AIM to megax29 Send a message via Yahoo to megax29
Re: Battery Light/Car Dying

I do have an amp and a pair of subs hopefully it is a quick fix...I'll let you guys know what it is end of today. My guess is that the alternator is weak.
__________________
V6 Midnight Black
CAI w/ K&N Filter, Tokico Complete Suspension kit, Single Flowmaster w/ turndown, GT rear sway bar.
megax29 is offline   Reply With Quote
Old 08-22-2007, 12:54 PM   #9
Registered Member
Regular
 
dapack69's Avatar
 
Join Date: Jul 2003
Region: Florida
Posts: 114
Send a message via Yahoo to dapack69
Re: Battery Light/Car Dying

AutoZone can check the alt while its in the car. I do it all the time.
__________________
I have a bone stock steering wheel.

http://www.gotstang.com/profile.php?dapack69#jump
dapack69 is offline   Reply With Quote
Old 08-22-2007, 05:26 PM   #10
Registered Member
Regular
 
megax29's Avatar
 
Join Date: Jul 2004
Region: Texas
Posts: 349
Send a message via AIM to megax29 Send a message via Yahoo to megax29
Re: Battery Light/Car Dying

The shop said I do need a new alternator. I was thinking a used one from an junked mustang. Any ideas as to where I can get the best deal? They 'fixed' the exhaust leak from the manifold. I had bought a used one off of a 98 I think and the guy who put it in said that he did all that he could and it's still leaking air at about the same rate slightly less. Ideas on that? I just wanna shut it up to where I hear my muffler and not the leak. The leak makes it sound broke or old.
__________________
V6 Midnight Black
CAI w/ K&N Filter, Tokico Complete Suspension kit, Single Flowmaster w/ turndown, GT rear sway bar.
megax29 is offline   Reply With Quote
Old 08-22-2007, 06:50 PM   #11
Registered Member
Regular
 
Join Date: Feb 2007
Region: Virginia
Posts: 38
Re: Battery Light/Car Dying

dont buy a used alt. u could buy one thats about to break. just buy a new one
02vert is offline   Reply With Quote
Old 08-23-2007, 10:43 AM   #12
Legacy Member
Legacy
 
Herbstang's Avatar
 
Join Date: Jan 2005
Region: Florida
Posts: 2,932
Re: Battery Light/Car Dying

Quote:
Originally Posted by 02vert View Post
dont buy a used alt. u could buy one thats about to break. just buy a new one
What he said !!!! Might be time for some after market headers
__________________

Mods-K&N CAI , True Dual Flowmaster 40, BBK Ceramic Shorties, 3.73 , 25% UDP, 3/8 Phenolic Intake Spacer ,Steeda Tri-ax, SCT Chip/Dyno Tune

Quote:
"Some people are like Slinkies; useless, but fun to push down the stairs."
Herbstang is offline   Reply With Quote
Old 08-23-2007, 12:55 PM   #13
Registered Member
Regular
 
megax29's Avatar
 
Join Date: Jul 2004
Region: Texas
Posts: 349
Send a message via AIM to megax29 Send a message via Yahoo to megax29
Re: Battery Light/Car Dying

Any ideas one where I can buy a new alternator then? I didn't want to buy aftermarket headers cuz I didn't wanna invest money on the motor. I was planning on changing the motor to a 4.6. In the mean time I wanted to work on the cars rear end suspension wheels and electronics. Ideas on the exhaust leak?
__________________
V6 Midnight Black
CAI w/ K&N Filter, Tokico Complete Suspension kit, Single Flowmaster w/ turndown, GT rear sway bar.
megax29 is offline   Reply With Quote
Old 08-23-2007, 01:31 PM   #14
Registered Member
Regular
 
Join Date: Feb 2007
Region: Virginia
Posts: 38
Re: Battery Light/Car Dying

auto zone, parts america, pep boys
02vert is offline   Reply With Quote
Old 09-01-2007, 01:16 AM   #15
Registered Member
Regular
 
Join Date: May 2003
Region: New Hampshire
Posts: 386
Send a message via AIM to Smokedya95stang
Re: Battery Light/Car Dying

dont buy a pepboys alternator. Their parts are junk. Id stick a alternator in and the next day the car would be back cause the alt **** the bed..
__________________
-Charles
Smokedya95stang is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
battery light blackonblack Pre-2005 V6 Mustang 17 01-20-2010 10:22 PM
Battery light? runvsofthisbull Pre-2005 V6 Mustang 6 06-22-2009 08:02 PM
battery light carlosc Pre-2005 V6 Mustang 4 09-18-2007 10:34 PM
Battery Light megax29 Pre-2005 V6 Mustang 1 06-20-2007 04:11 PM
Battery Light fordfan1184 Pre-2005 V6 Mustang 2 08-27-2003 04:16 PM

» Like Us On Facebook



09:35 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.