Computerized Engine Controls: Tools

Some systems require special testers (Ford EEC and Chrysler ESC), but most require only common shop equipment. The following items are necessary for servicing most systems:

• Digital Volt-Ohmmeter (At least 10 megohms input impedance)
• Vacuum Gauge
• Vacuum Pump
• Timing Light
• Test Lamp
• Tachometer/Dwell Meter
• Jumper Wire

The most important tool in servicing is the alertness of the servicemen. Many problems are caused by poor connections and damaged wiring or hoses. A complete visual check should be made before assuming that the computer or system has failed.