randypmartin
New Member
- Joined
- Jul 17, 2020
- Messages
- 10
- Reaction score
- 0
- Points
- 1
- Location
- Reno Nevada
- Vehicle Year
- 1990
- Make / Model
- Ford Bronco II
- Transmission
- Automatic
My 1990 Bronco II was having power issues. Replaced both the battery and alternator since I hadn't done so since buying it over 3 years ago. Ran great for about 6 months and now all of a sudden the battery light is on and it's clearly struggling at certain RPMs. This truck is an automatic but has a manual 4wd shifter on the floor. The power is so low while driving at slower speeds that the floor shifter rattles like crazy. Took it to Autozone to have the power checked and the diagnostic test came back as follows:
SYSTEM TEST FAIL
Battery Test
GOOD BATTERY
State of Charge : 100%
Cranking Health : PASS
Reserve Capacity: OK
Starting System Test
GOOD STARTING SYSTEM
Min Cranking Volts : PASS
Cranking Current : PASS
Cranking RPM : PASS
Charging System Test
BAD CHARGINS SYSTEM
Voltage Regulation: PASS
Diodes: PASS
Charging Current: FAIL
The manager told me that both the alternator and battery seem 100% healthy but that there is some issue with the charging system that should be addressed by an automotive electrician... Sounds expensive... I also did a full tune up last year, including replacing all spark plugs, wires, distributor cap, and rotor. Figured I'd post here before I go spend my money at a pricy local shop. Any thoughts would be super appreciated thanks!
SYSTEM TEST FAIL
Battery Test
GOOD BATTERY
State of Charge : 100%
Cranking Health : PASS
Reserve Capacity: OK
Starting System Test
GOOD STARTING SYSTEM
Min Cranking Volts : PASS
Cranking Current : PASS
Cranking RPM : PASS
Charging System Test
BAD CHARGINS SYSTEM
Voltage Regulation: PASS
Diodes: PASS
Charging Current: FAIL
The manager told me that both the alternator and battery seem 100% healthy but that there is some issue with the charging system that should be addressed by an automotive electrician... Sounds expensive... I also did a full tune up last year, including replacing all spark plugs, wires, distributor cap, and rotor. Figured I'd post here before I go spend my money at a pricy local shop. Any thoughts would be super appreciated thanks!