Trouble Diagnoses — Diagnostic Table (Cont'd) — Symptom 9: Abnormal idling — no fast idle
EF & EC-47flowchartDiagnostic Table (Cont'd)
SYMPTOM & CONDITION 9 — Abnormal idling — no fast idle
Possible Causes Matrix — Symptom 9
| Category | Possible Causes | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|---|
| SPECIFICATIONS | Mixture ratio | O | O | O | |||
| SPECIFICATIONS | Ignition timing | O | |||||
| INTAKE SYSTEM | Blow-by hose (clogged) | O | |||||
| INTAKE SYSTEM | Air regulator (stuck closed) | O | |||||
| CONTROL SYSTEM | Engine temperature sensor | O | O |
SPECIFICATIONS
Possible CausesMixture ratio
1O
2O
3
4O
5
6
SPECIFICATIONS
Possible CausesIgnition timing
1
2
3O
4
5
6
INTAKE SYSTEM
Possible CausesBlow-by hose (clogged)
1
2O
3
4
5
6
INTAKE SYSTEM
Possible CausesAir regulator (stuck closed)
1O
2
3
4
5
6
CONTROL SYSTEM
Possible CausesEngine temperature sensor
1
2
3
4
5O
6O
SERVICE PROCEDURE
Service Procedure Flowchart — Symptom 9: Abnormal idling — no fast idle
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