dash lights dim then car will die or will not start

[boarding2008]

so about 2 weeks ago, while driving my headlights would dim, dashlights dim, stereo would turn off. and if turned the car off while it was doing this i was unable to start it unless i jumped it. one night on my way home from work it died at a stop sign. had my friend come and jump me. took it home. tested the battery and it was dead. so i bought a new one, started right up. no lighs dimmed or anything. well just tonight while driving it started acting up again. could it be the alt not charging the battery enough.

i replaced my alt belt because it was in rough shape. i planned on replacing the alt this friday and hoping thats the problem. car is a 100% stock 89' with 87k original miles

[-RJ-]

Check the battery cables also. I had a similar problem and that fixed mine.

[420sxWETDREAMS]

If you gave it a jump and it died again its probably the alternator not charging your battery.

[boarding2008]

How exactly would I check my battery cables? They look good and are tight??

And I'm thinking alternator or the voltage regulator.

[amanoma]

Did you find out whats the problem? Because im having the same problem, i checked the alt its still good

[boarding2008]

Yup. It was my alternator. Changed the battery and it didn't help. Changed the alternator and it fixed the problem. Good luck!

[amanoma]

Awesome tnx!