If you're experiencing problems *after* changing the alternator, it's likely unrelated to a reset. Here are some possibilities:
* Battery Voltage: Ensure the new alternator is charging the battery correctly. A low voltage can cause all sorts of issues. Have the battery and charging system tested at an auto parts store.
* Loose Connections: Double-check all the connections you touched during the alternator replacement. A loose connection at the battery, alternator, or any related wire can cause problems.
* Damaged Wiring: It's possible you accidentally damaged a wire during the replacement. Inspect all wiring carefully.
* Faulty Alternator: While less likely, it's possible you installed a faulty alternator.
* Other Underlying Issues: The alternator problem might have been a symptom of something else that's still causing issues.
Instead of trying to "reset" the engine, focus on troubleshooting these potential problems. If you continue to have issues, you should take your car to a qualified mechanic for diagnosis. They have the tools and expertise to pinpoint the problem. Simply describing that you replaced the alternator will help them focus their troubleshooting.
