Here's why:
* What the Neutral Safety Switch Does: This switch is responsible for preventing the engine from starting unless the transmission is in "Park" or "Neutral". It does this by completing a circuit that allows the starter to engage.
* How it Relates to Your Problem: When you put the car in gear, the neutral safety switch may be malfunctioning and breaking the circuit, causing the engine to shut off.
Here are other possible culprits, but they're less likely:
* Faulty Ignition System: A problem with the ignition coil, spark plugs, or distributor can cause the engine to cut out.
* Fuel Delivery Issue: A clogged fuel filter or a failing fuel pump could prevent fuel from reaching the engine.
* Loose Electrical Connection: A loose wire or connection in the ignition system or transmission wiring can lead to a similar issue.
Troubleshooting Steps:
1. Check the Neutral Safety Switch: This is the most likely culprit. You can try the following:
* Wiggle the Shift Lever: Sometimes a loose connection in the switch can be temporarily resolved by wiggling the shifter.
* Inspect the Switch: If you have access to the switch (often located near the transmission), visually inspect it for signs of damage or corrosion.
* Replace the Switch: If the switch seems faulty, replacing it is the most reliable solution.
2. Inspect the Ignition System: Check the spark plugs, wires, and distributor cap for signs of wear or damage.
3. Check Fuel Delivery: Verify that the fuel pump is functioning properly and the fuel filter is not clogged.
4. Look for Loose Connections: Check the wiring harness for loose connections, especially around the ignition system and transmission.
Important Notes:
* Safety First: Always disconnect the battery before working on electrical components.
* Professional Help: If you're not comfortable working on your car's electrical system, it's best to take it to a qualified mechanic.
Let me know if you have any other questions or need further help. Good luck!
