alternator trouble

1999 MITSUBISHI 3000GT
140,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
RON SCHWARTZ
  • MEMBER
  • 1 POST
1999 Mitsubishi Montaro sport. I have had to replace three alternators in the last year. The last one lasting for three weeks. Could there be a short causing them to go bad. I have disconnected the power lead from the Alt and at the battery and have I have a closed circuit. However from the power lead at the Alt to body ground I am showing OMS. It looks like a short, shorting out the ALT. Where would I start to find the short or is there something I'm missing.
Thank you
Aug 18, 2011 at 4:55 PM
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.
Advertisement
Avatar
JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Wiring diagram below. The three red wires are hot all the time. The wire going to the L terminal, goes hot when you turn on the key.
Images (Click to enlarge)
Attached Media
Attached Media
Aug 18, 2011 at 5:29 PM
Advertisement
Avatar
JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Are you using oem alternator?
Aug 18, 2011 at 5:30 PM