Close

my car keeps killing new batteries. the battery warning light, the break light on 1995 Mitsubishi 3000GT SL

and the add coolant lights are on and the volt meter is at 8 volts.


Bad alternator or no power at alternator.
Qualified Local Mitsubishi Shops
Qualified Mitsubishi Shops For This Repair
950 Airport Rd # 301
Stephenville
RepairPal Shop Scorecard
95
Technical Ability
97
Tools & Equipment
97
Customer Service
88
Customer Amenities
Group
CLOSED NOW
(254) 255-4268
2 more answers
Have your charging system tested, most part stores will do this for free, maybe where you bought your battery. Maybe a parasitic draw test could be an answer.
I've had a similar issue, two separate times, fixed by alternator replacement and identifying parasitic drain.
To test parasitic drain: With car cold/off for 30 minutes, set multimeter to 10-20 amps and remove your positive battery terminal from battery and complete the circuit with multimeter diodes. The voltage should show a number near 50-60 mA normally for passive systems. If the number is significantly higher, pull fuses one at a time until the mA drops <100 mA. Then you've found your culprit.