1999 Honda Passport battery draining

1999 HONDA PASSPORT
150,200 MILES • V6 • 2WD • AUTOMATIC
Avatar
VGOMEZ
  • MEMBER
  • 1 POST
99 honda passport put a fully charged battery and was parked for 2 days when i try to turn on wont start just turns on all lights on dashboard. If i jump cables it will start right up as soon as i disconect jumper cables dash lights start to dim. Engine will stay on with no light or anything working on the inside i checked the fuses and all are good. Any suggestions on what may be the problem
Sep 15, 2015 at 1:05 PM
Advertisement
Avatar
CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
If lights dim when jumper cables are disconnected, you have a generator problem. You can prove that by measuring the battery voltage. With the engine off, it should be 12.6 volts. If it's around 12.2 volts the battery is good but discharged. It should be charged at a slow rate for an hour.

With the engine running, the battery voltage must be between 13.75 and 14.75 volts. If it is low, the charging system is not working.
Sep 15, 2015 at 5:36 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.