Auto >> AutoSPT >  >> Engine

1991 Camaro RS 3.1L will not start has good cranking power changed fuel pump filter distributor cap rotor plugs O2 sensor seldomly starts if it does runs like no problem for short time HELP?

Possible causes for a 1991 Camaro RS 3.1L not starting:

- Faulty ignition switch

- Bad or broken ignition module

- Crankshaft position sensor failure

- Bad ground connections

- Weak or faulty battery

- Clogged catalytic converter

- Faulty fuel pressure regulator

- Bad or broken coolant temperature sensor

- Vacuum leaks

- Throttle position sensor failure

Troubleshooting steps:

1. Check the battery and ensure it has a strong connection and sufficient power.

2. Inspect the ignition switch and ensure it is functioning correctly.

3. Test the ignition module for proper spark output.

4. Check the crankshaft position sensor and ensure it is properly connected and reading accurately.

5. Inspect all ground connections and ensure they are clean and tight.

6. Check the catalytic converter for clogs or blockages.

7. Test the fuel pressure regulator and ensure it is functioning properly.

8. Check the coolant temperature sensor and ensure it is reading correctly.

9. Inspect for any vacuum leaks and ensure all hoses are connected and sealed.

10. Test the throttle position sensor and ensure it is reading correctly.

If none of these steps identify the cause, it is recommended to consult with a qualified mechanic or diagnostic specialist for further assistance.