Go Back   MustangForums.com > Ford Mustang Tech > 4.6L (1996-2004 Modular) Mustang
Sign in using an external account
Register Forgot Password?
Search


4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.
Sponsored by Cruizin Concepts


Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 02-20-2012, 01:55 PM   #1
Kenny_k82
2nd Gear Member
 
Join Date: Sep 2006
Vehicle: 2004 Mach1 , 01 Gt Vert
Location: Nebraska
Posts: 357
Default Electrical Issue? I'm stumped

I have an 01' GT and I put a new battery in about 2 months ago after having to jump my car (figured it was the 4 year old pos battery). Everything was good for a month, but over the last 3 weeks I have had to jump it at least once a week. The battery tests good and the alternator is good as well. I keep my keys out of the ignition and I make sure everything is turned off.

-It goes dead randomly after sitting overnight, but sometimes starts just fine for 5-6 days and then randomly it won't start.
-It will click when I go to start it or barely crank over and then click
-Starts right up as soon as jumper cables are hooked up
-Had the battery tested at 2 places

So if it were a short wouldn't it drain the battery every night as opposed to doing it in 1 day sometimes and 5 days other times? Battery and Alt test fine and I have had no starter issues at all. Any ideas? Missed class today because of this and it's getting annoying.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
__________________
01' GT Conv. 70mm TB/Plenum, CAI, Diablo canned tune, Magnaflow catback, sub-frames, H&R springs, Upper/lower control arms, short throw, Mach1 grill delete, new headlights, convertible boot, 04' cobra rims, O/R X-pipe installed!, Chin spoiler
Coming soon:
3:73's
Kenny_k82 is offline   Reply With Quote
Old 02-20-2012, 02:08 PM   #2
shrimperdad
 
Join Date: Feb 2012
Vehicle: 1999, ford, mustang gt
Location: South Carolina
Posts: 6
Default

I had a vehicle doing something similar to this and it was wire partially broken going to the starter. If the battery is fully charged showing good voltage and it will not start this can be your problem because your not getting enough amps to the starter. If the battery is drained then start pulling fuses to see where the drainage is coming from with a volt meter.
shrimperdad is offline   Reply With Quote
Old 02-20-2012, 02:16 PM   #3
Kenny_k82
2nd Gear Member
 
Join Date: Sep 2006
Vehicle: 2004 Mach1 , 01 Gt Vert
Location: Nebraska
Posts: 357
Default

It starts fine when the battery is fully charged, I don't own a volt meter and I don't know anything about electrical problems. I'll try to check the wire going to the start but it Might be time for a shop I guess...
__________________
01' GT Conv. 70mm TB/Plenum, CAI, Diablo canned tune, Magnaflow catback, sub-frames, H&R springs, Upper/lower control arms, short throw, Mach1 grill delete, new headlights, convertible boot, 04' cobra rims, O/R X-pipe installed!, Chin spoiler
Coming soon:
3:73's
Kenny_k82 is offline   Reply With Quote
Old 02-20-2012, 03:51 PM   #4
cliffyk
TECH SAVANT
 
cliffyk's Avatar
 
Join Date: Dec 2006
Vehicle: 1998 SL500
Location: Saint Augustine, FL
Posts: 10,909
Default

How many miles a day do you drive, how long is each trip, at what speeds?

How was the battery tested? Was it a 15 to 20 second high amperage, 100A to 300A load test or one of those silly little handheld things used by the FLAPS--if the latter then it wasn't really tested...
__________________
-cliff knight-
SOLD! - 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum,
Delta Force tuned, Steeda UDPs, Ralco flywheel,
RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq


Engineering is, at its base, making what you want from what you have.
At its extreme it is making what you want from what you can get.
cliffyk is offline   Reply With Quote
Old 02-20-2012, 04:34 PM   #5
Kenny_k82
2nd Gear Member
 
Join Date: Sep 2006
Vehicle: 2004 Mach1 , 01 Gt Vert
Location: Nebraska
Posts: 357
Default

I drive about 25 miles a day with speed from 35-55mph. I had it tested on a handheld at Walmart, didn't trust them so I brought it to Napa and they did a quick test and then put it on the machine for a load test for 30min and it tested good.
__________________
01' GT Conv. 70mm TB/Plenum, CAI, Diablo canned tune, Magnaflow catback, sub-frames, H&R springs, Upper/lower control arms, short throw, Mach1 grill delete, new headlights, convertible boot, 04' cobra rims, O/R X-pipe installed!, Chin spoiler
Coming soon:
3:73's
Kenny_k82 is offline   Reply With Quote
Old 02-20-2012, 06:57 PM   #6
cliffyk
TECH SAVANT
 
cliffyk's Avatar
 
Join Date: Dec 2006
Vehicle: 1998 SL500
Location: Saint Augustine, FL
Posts: 10,909
Default

Quote:
Originally Posted by Kenny_k82 View Post
I drive about 25 miles a day with speed from 35-55mph. I had it tested on a handheld at Walmart, didn't trust them so I brought it to Napa and they did a quick test and then put it on the machine for a load test for 30min and it tested good.
Well that should be plenty to keep it charged. Do you have any aftermarket accessories (alarm, radio, ???) that might be drawing power even with the key off?

One other test to perform is what is commonly called a "dark current" test, see page 414-00-10 of this document, Battery--Drain Tests...
__________________
-cliff knight-
SOLD! - 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum,
Delta Force tuned, Steeda UDPs, Ralco flywheel,
RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq


Engineering is, at its base, making what you want from what you have.
At its extreme it is making what you want from what you can get.
cliffyk is offline   Reply With Quote
Old 02-20-2012, 07:40 PM   #7
Kenny_k82
2nd Gear Member
 
Join Date: Sep 2006
Vehicle: 2004 Mach1 , 01 Gt Vert
Location: Nebraska
Posts: 357
Default

That's the odd thing. I've never had any sort of electrical work, stereo work, or mods requiring any kind of electrical modification and I have had the car for over 2 years with no issue and then all of a sudden this started. The radio, amps, everything is stock.
__________________
01' GT Conv. 70mm TB/Plenum, CAI, Diablo canned tune, Magnaflow catback, sub-frames, H&R springs, Upper/lower control arms, short throw, Mach1 grill delete, new headlights, convertible boot, 04' cobra rims, O/R X-pipe installed!, Chin spoiler
Coming soon:
3:73's
Kenny_k82 is offline   Reply With Quote
Old 02-20-2012, 07:46 PM   #8
Kenny_k82
2nd Gear Member
 
Join Date: Sep 2006
Vehicle: 2004 Mach1 , 01 Gt Vert
Location: Nebraska
Posts: 357
Default

Ok, so I could be nuts, and let me know if I am but I made an observation. The car had no issues for a full week until this morning. During that time I was making sure that I turned off the radio and heater before shutting off the car and pulling out the key. When it was dead this morning I noticed that I left the radio on before shutting off the car and taking the key out of the ignition. It's the only thing I can think of that I did differently, but is there any way that could make any bit of difference?
__________________
01' GT Conv. 70mm TB/Plenum, CAI, Diablo canned tune, Magnaflow catback, sub-frames, H&R springs, Upper/lower control arms, short throw, Mach1 grill delete, new headlights, convertible boot, 04' cobra rims, O/R X-pipe installed!, Chin spoiler
Coming soon:
3:73's
Kenny_k82 is offline   Reply With Quote
Old 02-25-2012, 02:06 AM   #9
trexflyer
1st Gear Member
 
Join Date: Jan 2012
Vehicle: 1996 Mustang GT
Location: Nevada
Posts: 115
Default

I had the same issue with my explorer a few yrs ago. Replaced the starter cable/wire and everything was fine. Battery was an old pos so replaced that. 2 months later replaced the starter and everything was fine for another month or so. Thinking that it couldn't be the new starter wire, and everything else was replaced I was stumped. Turns out the old battery corroded the inside of the new wire in 2 months and that ended up being the main culprit (again).
I guess it's possible the remote power lead going to the stereo amps is causing them to stay on all the time? But that would involve other issues with the radio/wiring as well. My random starting issues were just that....random. Sometimes it would go for over a week starting fine, other times I needed a jump right after turning the car off n driving for 200 miles.
__________________
Quote:
Originally Posted by hookandpull
If youre gonna pose your car off as something that its not I suggest you go to Costco and buy Astro Glide in bulk.
trexflyer is offline   Reply With Quote
Old 02-26-2012, 11:33 PM   #10
Kenny_k82
2nd Gear Member
 
Join Date: Sep 2006
Vehicle: 2004 Mach1 , 01 Gt Vert
Location: Nebraska
Posts: 357
Default

I was cleaning my car today and noticed something odd. They key was out of the ignition. I sprayed the radio and wiped it down and when I hit the buttons the radio came on, just the display trying to eject a CD. I don't think it should have power with the key out of the ignition, might be the culprit!
__________________
01' GT Conv. 70mm TB/Plenum, CAI, Diablo canned tune, Magnaflow catback, sub-frames, H&R springs, Upper/lower control arms, short throw, Mach1 grill delete, new headlights, convertible boot, 04' cobra rims, O/R X-pipe installed!, Chin spoiler
Coming soon:
3:73's
Kenny_k82 is offline   Reply With Quote
Old 02-26-2012, 11:33 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
01, 03, 2003, altinator, battery, charge, click, cobra, electrical, gt, issues, mustang, start, wont

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 Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 05:15 PM.

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup