Routine 204 - Rough Idle
ROUTINE 204 - ROUGH IDLE
| SYSTEM & Component(s) | GO TO: |
|---|---|
| COOLING: Fan or Electric Fan (Loose or Cracked) | Perform a visual inspection |
| IGNITION: Scope Engine for: Spark Plug, Coil, Secondary Wires, Distributors Cap, Adapter, Rotor & Ignition Timing | See SYSTEM/COMP TESTS |
| EEC: Quick Test | See TESTS W/CODES |
| FUEL CHARGING ASSY: Curb or Fast Idle Speed, Electrical & Vacuum Connections | See SYSTEM/COMP TESTS & ADJUSTMENTS |
| FUEL DELIVERY: Fuel Pressure Regulator, Injectors, Fuel Rail | See SYSTEM/COMP TESTS |
| VACUUM DISTRIBUTION: Vacuum Leaks | Perform a visual & audible inspection |
| EGR: Valve, Vacuum Regulator | See SYSTEM/COMP TESTS |
| COOLING: Thermostat | Check cooling system |
| BASIC ENGINE: Compression, Valve Train, Camshaft, Intake Manifold Gaskets | Check engine mechanical condition |
| PCV: Valve | See SYSTEM/COMP TESTS |
| EVAP: Components | See SYSTEM/COMP TESTS |
| EXHAUST: Pipes, Muffler, Catalyst Resonator, Heat Control Valve | Check exhaust system |