74 no start
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Joined: Feb 2009
Posts: 99
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From: Pensacola Florida
74 no start
So I brought my new girl home yesterday. Very happy except for one thing. I have to jump her off. Had the battery tested today--it's good.
Checked my neg. cable for possible ground issue--seems good. I replaced the cable ends.
It's odd because I can jump her off and she runs fine but not showing any voltage on the gauge on dash. When I turn her off she usually cranks right back up but if she sits for a few minutes no go.
Any thought would be appreciated. My thinking is if the alt. was bad she would not stay running--right?
Checked my neg. cable for possible ground issue--seems good. I replaced the cable ends.
It's odd because I can jump her off and she runs fine but not showing any voltage on the gauge on dash. When I turn her off she usually cranks right back up but if she sits for a few minutes no go.
Any thought would be appreciated. My thinking is if the alt. was bad she would not stay running--right?
Racer
Joined: Jun 2005
Posts: 293
Likes: 1
From: Pace Florida
If you started with a fully charged battery, the car would start and run with a dead alternator, until the charge on the battery dies. Recently had this problem with my sons car when it quit on him on the road. Swapped the battery out of my wife's car, and had enough charge to get it home. Alternator was indeed dead.
Instructor
Joined: Apr 2008
Posts: 143
Likes: 0
From: Batavia IL
Start it up & pull off one of the battery cables. If it keeps running, alternator is good. If it dies, alternator is toast.
Don't do this on a newer comp. controlled car, but this is a fine test for the older machinery.
Don't do this on a newer comp. controlled car, but this is a fine test for the older machinery.
Team Owner
Joined: Jul 2008
Posts: 23,419
Likes: 22
From: In limbo
St. Jude Donor '13-'15, '17 thru '22
Let me see if I have this straight: You charge the battery and it starts and runs. Then, you turn the car off. If you start right away again, it will start, but leave it sitting and the battery is pretty much dead. If I have that right, it stretches the imagination to think that you DON'T have a short circuit. If you have a service manual, there should be a diagnosis procedure in there for finding it. I forget the ins and outs of it off the top of my head, but it should be pretty easy using a multimeter to figure out which fuse the short circuit is on. I would also check to make sure the starter isn't shorting.
Le Mans Master
Joined: Nov 2004
Posts: 7,186
Likes: 45
From: detroit area
i was about to say check the neg cable.... i had an issue 2 years ago with a bad -cable and it fried my radio and a few other things.... 700bucks later i was ok... i replaced alot of things and then found the -cable being bad....live/learn
Racer
Joined: Mar 2007
Posts: 316
Likes: 0
From: Pace/ Pensacola FL
I think it has to do with you losing the pass side "Stingray" badge and not replacing it yet
.
(don't worry, I won't tell anyone you were a mechanic for over 10 years and had to go to a forum to fix a neg battery cable.)
. (don't worry, I won't tell anyone you were a mechanic for over 10 years and had to go to a forum to fix a neg battery cable.)
