1990boostang

I just had my alternator tested and it was good. So i went and got new plugs for it. Its still not charging . It just all the sudden quit but the alternator is still good WTF.

PRO50SC

Wiring/short problem most likely. Have you checked the power feed wireto see if it has power?

1990boostang

It has powergoing tothe alternator. I started it just now and unplugged the battery and it died.

P Zero

Does the guage on the dash show its charging? Some cars have will cut out if the alt. is unplugged. Never heard of it happening on a stang but its a possibility.
-P.

drhoward

maybe you have u/d pullies and don't know it


actually that happedned to me when I first bought my 94 I couldn't figure out why my battery wasn't charging when I wasen't accelerating[8D]

1990boostang

Its not charging anything the gauge is almost at the bottom in the red.

1990mustanggt

You have a wire that plugs into it, I think it is black with an orange stripe. That wire has some little fuse looking things that run in line on it. Check those. They could be blown. I had the same problem with my friends car once.

Derf00

You mean a fusible link. That's a possibily, or the alternator is bad and the tester just didn't show it. There is such a think as undercharging.

Had a similar thing happen to me where my cars lights would start dimming and the battery light (charging light) on my car would start flickering at WOT. Bench test of the alt. show'd 3 good tests and two bad tests. I replaced the alternator, no more flickering or lights dimming. This was on an '00 V6 manual.

stang8689

could it be a bad battery

lookin4astang

Could be. Check it with a voltage tester. Check the plug ins on the alternator as well. They are notorious for failure. Only $7 at your local partshouse if you do need one. Check both black/orange wires, and the fusible link is right under the starter solenoid. It will be on a dark green wire. Check that. The car *should* still run if you disconnect the battery. So if it isn't, there is a problem either with the alternator or your wiring.

It's a simple fix. Just check your wiring carefully.
Here. This will help.