Trouble Diagnoses — Diagnostic Table (Cont'd) — Symptom & Condition 19: Engine stall — while idling
EF & EC-57flowchartDiagnostic Table (Cont'd)
SYMPTOM & CONDITION 19 — Engine stall — while idling
Possible Causes vs. Step Number Matrix
| System | Possible Causes | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|
| SPECIFICATIONS | Mixture ratio (too rich/too lean) | O | O | |||||||
| SPECIFICATIONS | Fuel pressure (low) | O | O | |||||||
| SPECIFICATIONS | Ignition sparks (weak, missing) | O | ||||||||
| SPECIFICATIONS | Idle speed (low) | O | ||||||||
| FUEL SYSTEM | Fuel line (clogged) | O | ||||||||
| IGNITION SYSTEM | Spark plugs (wet with fuel, improper gap) | O | O | |||||||
| INTAKE SYSTEM | A.A.C. valve | O | O | |||||||
| INTAKE SYSTEM | F.I.C.D. solenoid (improper operation) | O | O | |||||||
| CONTROL SYSTEM | Idle switch (remaining OFF) | O | ||||||||
| CONTROL SYSTEM | Neutral switch (remaining OFF) | O |
SPECIFICATIONS
Possible CausesMixture ratio (too rich/too lean)
1O
2O
3
4
5
6
7
8
9
SPECIFICATIONS
Possible CausesFuel pressure (low)
1O
2O
3
4
5
6
7
8
9
SPECIFICATIONS
Possible CausesIgnition sparks (weak, missing)
1
2
3
4O
5
6
7
8
9
SPECIFICATIONS
Possible CausesIdle speed (low)
1
2
3O
4
5
6
7
8
9
FUEL SYSTEM
Possible CausesFuel line (clogged)
1
2O
3
4
5
6
7
8
9
IGNITION SYSTEM
Possible CausesSpark plugs (wet with fuel, improper gap)
1
2
3
4
5O
6O
7
8
9
INTAKE SYSTEM
Possible CausesA.A.C. valve
1
2
3O
4
5
6
7O
8
9
INTAKE SYSTEM
Possible CausesF.I.C.D. solenoid (improper operation)
1
2
3O
4
5
6
7
8O
9
CONTROL SYSTEM
Possible CausesIdle switch (remaining OFF)
1
2
3
4
5
6
7
8
9O
CONTROL SYSTEM
Possible CausesNeutral switch (remaining OFF)
1
2
3O
4
5
6
7
8
9
SERVICE PROCEDURE
Service Procedure Flowchart — Engine stall while idling
Rendering diagram…