During P/S Operation (Aerio)
- With wheels turned, check P/S signal circuit. See POWER STEERING PRESSURE SWITCH CIRCUIT CHECK under MISCELLANEOUS CONTROLS in SYSTEM & COMPONENT TESTING article.
- Faulty spark plugs. See IGNITION CHECKS in BASIC DIAGNOSTIC PROCEDURES article.
- Faulty ignition coil. See IGNITION CHECKS in BASIC DIAGNOSTIC PROCEDURES article.
- Fuel pressure out of specification. See FUEL PRESSURE under FUEL SYSTEM in SYSTEM & COMPONENT TESTING article.