1999 Mitsubishi Eclipse alternator voltage

1999 MITSUBISHI ECLIPSE
85,000 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
Avatar
KRYPTECLIPSE
  • MEMBER
  • 45 POSTS
What is the voltage that the alternator is supposed to put out? This is the second alternator I have installed. The mechanic says that it should charge at 14 and right now it is at 12.73. It goes down to 12.20 and back up Both Alternators were new. The battery is new and the starter is only 2 weeks old. The car is running.

Any help is appreciated
Thanks
Apr 22, 2015 at 12:55 PM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
check the items in the two pics
Images (Click to enlarge)
Attached Media
Attached Media
Apr 22, 2015 at 1:27 PM
Avatar
KRYPTECLIPSE
  • MEMBER
  • 45 POSTS
Fuses seem fine, I changed them just in case. Still putting out 12.73.
Any ideas
Thanks in advance
Apr 23, 2015 at 6:32 AM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
only thing I can think of is the belt may be slipping. if it has an automatic tensioner replace that as well. it should but out at least13.5 volts and up to 14.3 at a complete discharge. try pulling the generator relay and looking for corrosion on prongs if its removable. clean them off and tweak them a tad and put dielectric compound on it . you might see if there is corrosion on 100 amp fusible link as well
Apr 23, 2015 at 6:41 AM
Avatar
KRYPTECLIPSE
  • MEMBER
  • 45 POSTS
will do
thanks
Apr 23, 2015 at 7:11 AM