Intermittent Simulation

WARNING: This page is about a different car, the 1997 Volvo 960. However, it is still accessible from the selected car via links, so may be relevant.

Monitor circuit/component voltage or resistance while using the following procedures to simulate an intermittent fault. If engine is running, check for self-diagnostic codes. Use test results to identify a faulty component or circuit.

Lightly vibrate component.
Heat component.
Wiggle or bend wiring harness.
Spray component with water mist.
Remove vacuum from component.
Apply vacuum to component.