Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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.
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.