Basic EEC Trouble Shooting
- Perform basic fuel system and ignition system checks, to ensure there is gas and spark.
- Remove air cleaner assembly and inspect all vacuum and pressure hoses for proper connection to fittings, or any broken, cracked or pinched conditions.
- Inspect EEC sub-system harness for proper connections to EGR solenoid valves. Red wire to both, yellow wire to vacuum solenoid and green wire to vent solenoid.
- Check for any loose or detached connectors or broken or detached wires. Ensure all terminals are completely seated.
- Check for partially broken or frayed wires at connectors or any shorting between wires. Also clean up any corrosion detected.
- Inspect sensors for evidence of physical damage.
- Repair items as required. Replace air cleaner.
- Check vehicle electrical system. Check for full battery charge and check battery cable connections for tightness.
- Inside passenger compartment, check to make sure the power relay is securely attached and making a good ground connection.
- Use an ohmmeter to check resistance of the system sensors and solenoids. If any component fails to meet specifications, replace it. Be sure to disconnect component from system before measuring resistance.