1998 Nissan Sentra Battery/Brake light on and car running f

1998 NISSAN SENTRA
123,000 MILES • 4 CYL • FWD • AUTOMATIC
Avatar
MARKANDLAURI
  • MEMBER
  • 1 POST
The battery/brake light has been blinking on in this car for months. I keep having it checked and it tests fine. I changed the battery cause it was old but no change. Lights keep coming on and now more frequently. Car runs fine. Starts like new. Could this be a bad sensor or could everyone be wrong when they run the diagnostics on the battery/alternator? Don't want to spend the money on having a new altenator if I don't need one and everyone tells me its fine.
Nov 4, 2010 at 1:01 PM
Advertisement
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Hi markandlauri, Welcome tyo 2carpros and TY for the donation Check if the alternator belt tensioned properly if okay double check the wiring to and from the battery and alternator continues to come on-have the alternator load tested-See charge system EWD below -check fuses/wiring


https://images.2carpros.com/forum/automotive_pictures/12900_c1_56.jpg


https://images.2carpros.com/forum/automotive_pictures/12900_c2_49.jpg

Nov 4, 2010 at 3:52 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.