Intermittent Conditions: Visual/Physical
This step is an important aid for locating a condition without extensive testing. Perform a thorough visual and physical inspection of the following:
- Wiring harness for damage or cuts.
- A misrouted harness that is too close to high voltage or high current devices such as secondary ignition components, motors or Generators.
- Vacuum hoses for proper routing, connections, splits or kinks.
- Air leaks at the throttle body mounting area.
- Engine Control Module (ECM) and body grounds are clean and tight.
- Battery connections are clean and tight.
- Charging system for proper operation.