TROUBLE DIAGNOSES — Diagnostic Table (Cont'd) — Symptom & Condition 15: Poor driveability — surge (while cruising)
EF & EC-53flowchartDiagnostic Table (Cont'd)
SYMPTOM & CONDITION 15 | Poor driveability — surge (while cruising)
Possible Causes vs. Check Steps
SPECIFICATIONS
POSSIBLE CAUSESMixture ratio (too lean)
1O
2
3O
4O
5
6
7O
SPECIFICATIONS
POSSIBLE CAUSESFuel pressure (low)
1
2
3O
4O
5
6
7
SPECIFICATIONS
POSSIBLE CAUSESIgnition timing
1
2O
3
4
5
6
7
IGNITION SYSTEM
POSSIBLE CAUSES(missing)
1
2
3
4
5
6O
7
INTAKE SYSTEM
POSSIBLE CAUSESAir duct (leaks)
1O
2
3
4
5
6
7
INTAKE SYSTEM
POSSIBLE CAUSESThrottle chamber (air leaks)
1O
2
3
4
5
6
7
INTAKE SYSTEM
POSSIBLE CAUSESIntake manifold (gasket) (air leaks)
1O
2
3
4
5
6
7
CONTROL SYSTEM
POSSIBLE CAUSESCrank angle sensor
1
2
3
4
5
6O
7
CONTROL SYSTEM
POSSIBLE CAUSESAir flow meter
1
2
3
4
5
6O
7
CONTROL SYSTEM
POSSIBLE CAUSESExhaust gas sensor
1
2
3
4
5
6
7O
CONTROL SYSTEM
POSSIBLE CAUSESIdle switch
1
2
3
4
5O
6
7
SERVICE PROCEDURE
Service Procedure Flowchart — Symptom 15
Rendering diagram…
See also
EF & EC-22Direct Ignition System (Cont'd) — Checking Ignition Timing and Idle SpeedEF & EC-25IDLE SPEED/IGNITION TIMING/IDLE MIXTURE RATIO INSPECTIONEF & EC-82Diagnostic Procedure 2 — CRANK ANGLE SENSOR (Code No. 11)EF & EC-84TROUBLE DIAGNOSES — Diagnostic Procedure 3 — AIR FLOW METER (Code No. 12)EF & EC-90Trouble Diagnoses — Diagnostic Procedure 6: IGNITION SIGNAL (Code No. 21) & DETONATION SENSOR (Code No. 34)EF & EC-94Diagnostic Procedure 7 — IDLE SWITCH (Switch ON/OFF diagnosis)