1. Battery Ground Cable:
- Check the battery ground cable where it connects to the chassis or engine block. Make sure the connection is tight and free of corrosion.
2. Engine Ground:
- There should be a ground strap connected between the engine block and the chassis. Ensure the strap is in good condition and the connections are tight.
3. Intake Manifold Ground:
- Look for a ground strap connected to the intake manifold near the throttle body. Check for any loose connections or corrosion.
4. Distributor Ground:
- On older vehicles like your RX-7, there may be a ground wire connected to the distributor. Make sure this wire is secure and not damaged.
5. Headlight Ground:
- Check the ground connections for the headlights. Sometimes, poor grounding can affect the electrical system and cause hesitation issues.
6. Body Ground:
- Look for a grounding point where the body meets the chassis or frame. Ensure this connection is secure and free of rust or corrosion.
7. Check Wiring Harness:
- Visually inspect the wiring harness for any signs of damage or exposed wires. This can lead to electrical faults and affect the engine's performance.
8. ECU Ground:
- Some vehicles have a separate ground point for the Engine Control Unit (ECU). Locate the ECU and check the ground connections near it.
9. Alternator Ground:
- If the ground connection to the alternator is loose or corroded, it can affect the charging system and cause electrical problems.
Remember that when doing any electrical work on your car, it's essential to disconnect the battery for safety. If you're not comfortable with electrical repairs, it's advisable to take your RX-7 to a professional mechanic for proper diagnosis and repairs.
