Search



Go Back   MustangForums.com > Ford Mustang Tech > 5.0L (1979-1995) Mustang
Sign in using an external account
Register Forgot Password?
Search

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Sponsored by Weld Racing


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 07-01-2013, 08:36 PM   #1
ruskiegunlover
2nd Gear Member
 
Join Date: Jun 2011
Vehicle: 1967 fastback
Location: Kansas
Posts: 162
Default 92 5.0 just suddenly DEAD......

Started, drove down the streat to a gas station to grab a coke on my way out to have an estimate done on getting a new paint job on it, and it is DEAD. Jumped it, drove it out to have this guy give me the estimate, had to jump it again, drove to auto parts store, they said bat was fine and alternator was screwed. Was charging 52 amps instead of 75. I know little about alternators. Does that sound right? The idiot guage showed it was charging normal, but if I shut the car off and then tried to restart it, it was hyst dead. IMMEDIATLY was dead......
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
ruskiegunlover is offline   Reply With Quote
Old 07-01-2013, 08:49 PM   #2
big ben
2nd Gear Member
 
big ben's Avatar
 
Join Date: Aug 2007
Location:
Posts: 182
Default

take a dvom to the batt. with the car running you sould see 14.xxx volts.. if not the alt is probibly bad as for amps it depends how they tested it and what was on in the car during the test (lights radio heat wipers) keep in mind the auto parts store testers can be misleading especially if you get the FNG who almost always gets sent out for batt. tests
__________________
1992gt 5 speed stock bottom end with an E303 cam, aluminum gt40x heads, tubular intake, plenum spacer,19# injectors, 70mm bbk throttle body, bbk CAI, bbk 76mm maf , shorty headers, flowmasters, accel coil, and 4.10 gears
big ben is offline   Reply With Quote
Old 07-01-2013, 09:15 PM   #3
ruskiegunlover
2nd Gear Member
 
Join Date: Jun 2011
Vehicle: 1967 fastback
Location: Kansas
Posts: 162
Default

Nothing on but the stereo.....
ruskiegunlover is offline   Reply With Quote
Old 07-04-2013, 11:09 AM   #4
mongolchuck
2nd Gear Member
 
Join Date: Feb 2007
Vehicle: 1991 LX Convertible
Location: IA
Posts: 150
Default

A 75 amp alt doesn't charge 75 all the time. That is the peak charge. Check connections. At the batt, the starter, the solenoid, everywhere. Corrosion can easily build up between the clamps and posts. Gauges can be misleading so do as ben said and check voltage while running.
mongolchuck is offline   Reply With Quote
Old 07-04-2013, 12:02 PM   #5
dawson1112
5th Gear Member

 
Join Date: Jul 2012
Vehicle: 1990 lx hatch 5.0
Location: ohio
Posts: 2,643
Default

Sometimes when a battery goes bad it happens suddenly with no warning. I just had one replaced in my moms Lincoln for her under warranty because it just suddenly stopped taking a charge. generally I wouldn't expect the altenator to be putting out no more than 20 or 30 amps with only the car idleing and the radio on if the battery is charged. Probly up to about 40 or 50 amps if the battery is dead and its working hard to keep it charged. I would have the battery tested with a load meter to see what it pulls down to. I bet that battery under load drops to 0 volts in less than a second.
__________________
dawson1112 is offline   Reply With Quote
Old 07-04-2013, 12:02 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

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 01:18 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