Having problems with your Chevrolet Cavalier ?

2002 chevy cavalier battery shows 12.30 volts at rest. Once the car is started the voltage drops to between 10 and 9 volts. The voltage differential between bolt on the rear of the alternator and the negative terminal on the battery is approximately 5.9 volts. What is the problem with my vehicle?

Posted / edited by AnonymousUser on : 17-01-2022

Answers :

Verify that BOTH your positive battery cable AND your negative battery cable have good clean connections at both ends. Make sure that the part where the negative battery cable bolts too on the body of the car is free of rust and a good solid connection. After confirming good connections, then verify that the alternator is charging at between 13.5 and 14 volts when the engine rpm is raised to near 2000 rpm. Check that the battery voltage stays above 10 volts when the starter is cranking and turning the engine over. Once all these things are met, then the system is in good condition. If the battery voltage is too low after a sufficient amount of recharge time, then the battery is probably bad. If the Alternator voltage is too low once you verify a good battery, then the alternator is probably bad.
Repair Help & Product Troubleshooting for Chevrolet Cavalier

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Loading ...

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0085 seconds