Replaced alternator, fuses, temperature control sensor, the plug that goes to the alternator and battery. The battery light comes on a few minutes after crank. We check the voltage on alternator and it was only putting out about 7.30-8. Volts. Replaced a fuse and the volts jumped up to 14.5 volts. Battery light went off but once I turned on the lights and got the car rpms to 2 the battery light came back on and the volts dropped down to 7.3. We have check wires and cables and cannot figure out why the alternator is now only putting out half the voltage. I don't know what else to do.. any suggestions?

  • Welcome to Motor Vehicle Maintenance & Repair! Check the fuse again. I'll bet it is blown. This would lead me to believe you have a short somewhere which is causing the fuse to blow. Commented Nov 13, 2023 at 11:05
  • What circuit blew the fuse?
    – F Dryer
    Commented Nov 13, 2023 at 19:36
  • We checked the fuse again. It's not blown. It was the alternator fuse I beleive. The alternator is only putting out low volts now. It was putting out 13/14 volts prior to the fuse blowing.
    – Tessa S.
    Commented Nov 14, 2023 at 12:22


You must log in to answer this question.

Browse other questions tagged .