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NO.13 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [MZR-CD (RF Turbo)]

id0103f1821100

13 | ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES
DESCRIPTION | • Engine stops unexpectedly at beginning of acceleration or during cruise. • Engine stops unexpectedly while cruising. • Engine speed fluctuates during acceleration or cruising. • Engine misses during acceleration or cruising. • Vehicle bucks/jerks during acceleration, during or deceleration. • Momentary pause at beginning of acceleration or during acceleration. • Momentary minor irregularity in engine output.
POSSIBLE CAUSE | • Poor fuel quality • Glow system malfunction • Air leakage from intake-air system • Intake-air system restriction or clogging • Engine overheating • A/C system improper operation • Turbocharger malfunction • EGR system malfunction • Neutral switch or related circuit malfunction • Cooling fan No.1 or cooling fan No.2 seat are improper • Fuel line clogging or restriction • Fuel filter clogging or restriction • Incorrect fuel injection timing • Erratic signal from CKP sensor • Erratic signal from CMP sensor • ECT sensor or related circuit malfunction • Boost sensor or related circuit malfunction • Accelerator pedal position (APP) sensor or related circuit malfunction • MAF/IAT sensor or related circuit malfunction • IAT sensor No.2 or related circuit malfunction • VSS or related circuit malfunction • Incorrect idle speed • Inadequate fuel pressure • Fuel pressure sensor or related circuit malfunction • Suction control valve malfunction (built-in supply pump) • Fuel pressure limiter malfunction (built-in common rail) • Supply pump malfunction • Fuel injector malfunction • Low engine compression • Improper valve timing • Exhaust system and/or oxidation catalytic converter restriction • Clutch slippage Warning The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: • Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. • Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.

Diagnostic Procedure

STEP | INSPECTION | RESULTS | ACTION
--- | --- | --- | ---
1 | Is the idle speed stable? | Yes | Go to the next step.
No | Go to symptom troubleshooting "NO.10 ENGINE RUNS ROUGH/ROLLING IDLE [MZR-CD (RF-Turbo)]".
2 | Is the engine overheating? | Yes | Go to symptom troubleshooting "NO.19 COOLING SYSTEM CONCERNS-OVERHEATING [MZR-CD (RF-Turbo)]".
No | Go to the next step.
3 | Perform the self-test function using the WDS or equivalent. Turn the engine switch to the ON position. Retrieve any DTCs. Are any DTCs displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [MZR-CD (RF Turbo)].) Communication error message is displayed: Inspect the following: • Open circuit between PCM control relay and PCM terminal 119 or 120 • Open circuit PCM control relay and PCM terminal 105 • PCM control relay stuck open • Open or poor ground circuit (PCM terminal 1, 2, 3, 114 or 117) • Poor connection to vehicle body ground
No | No DTC is displayed: Go to the next step.
4 | Inspect the following: • Fuel quality (e.g.: including water contamination, winter/summer blend) • Fuel line/fuel filter clogging and/or restriction • Intake-air system restriction or clogging • Exhaust system and/or oxidation catalytic converter restriction • Cooling fan seat Are all items normal? | Yes | Go to the next step.
No | Service if necessary. Repeat Step 4.
5 | Does the engine run normal after warm-up? | Yes | Inspect the glow system operation. (See RELAY INSPECTION.) Replace any malfunctioning part if necessary. If the glow system is normal, go to the next step.
No | Go to the next step.
6 | Note • The following test should be performed on vehicles with an A/C system. If the following test cannot be performed due to engine stalling, go to the next step. • Go to the next step for the vehicles an without A/C system. Connect the pressure gauge to A/C line. Turn the blower and A/C switches on. Is the pressure within specifications? | Yes | Go to the next step.
No | A/C is always on: Go to the symptom troubleshooting "NO.26 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUITY [MZR-CD (RF-Turbo)]". Other symptoms: Inspect the following: • Refrigerant charging amount • Cooling fan operation
7 | Inspect the hose bands between the following parts: • Turbocharger compressor housing and air cleaner • Turbocharger compressor housing and charge air cooler Are the hose bands loose? | Yes | Retighten the hose bands. If the concern is resolved, the inspection is complete. If the concern still exists, go to the next step.
No | Go to the next step.
8 | Inspect for improper operation, kinks, clogging or disconnection on the guide blade actuator. Is the guide blade actuator normal? | Yes | Turbocharger is normal. Go to the next step.
No | Repair or replace if necessary. If concern is resolved, the inspection is complete. If concern still exists, the turbocharger is normal. Go to the next step.
9 | Perform the EGR system inspection. Is the EGR system normal? | Yes | Go to the next step.
No | Repair or replace the malfunctioning part according to The EGR system operation results.
10 | Inspect the idle speed. (See ENGINE TUNE-UP [MZR-CD (RF Turbo)].) Is the idle speed correct? | Yes | Go to the next step.
No | Repair or replace the malfunctioning part according to idle speed inspection results.
11 | Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZR-CD (RF Turbo)].) Is the APP sensor normal? | Yes | Go to the next step.
No | Replace the accelerator pedal component.
12 | Inspect the adjustment of the neutral switch. (See NEUTRAL SWITCH INSPECTION [MZR-CD (RF Turbo)].) Is the neutral switch adjusted correctly? | Yes | Go to the next step.
No | Adjust the neutral switch correctly.
13 | Visually inspect the CKP sensor and the teeth of the pulse wheel. Are the CKP sensor and the teeth of the pulse wheel normal? | Yes | Go to the next step.
No | Replace malfunctioning parts.
14 | Measure the gap between the CKP sensor and the teeth of the pulse wheel. Specification 1.5-2.5 mm {0.059-0.098 in} Is the gap within the specification? | Yes | Go to the next step.
No | Adjust the CKP sensor position.
15 | Visually inspect the CMP sensor and the teeth of the pulse wheel. Are the CMP sensor and the teeth of the pulse wheel normal? | Yes | Inspect the following PIDs: (See PCM INSPECTION [MZR-CD (RF Turbo)].) • ECT • IAT • MAF • RPM If the PID value is not as specified, repair or replace malfunctioning parts. If the PID value is normal, go to the next step.
No | Replace malfunctioning parts.
16 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [MZR-CD (RF Turbo)].) Is the fuel pressure normal? | Yes | Go to the next step.
No | Replace the common rail.
17 | Inspect the suction control valve. (See SUCTION CONTROL VALVE INSPECTION [MZR-CD (RF Turbo)].) Is suction control valve normal? | Yes | Go to the next step.
No | Replace the supply pump. (See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
18 | Is the engine compression correct? (See COMPRESSION INSPECTION [MZR-CD (RF Turbo)].) | Yes | Go to the next step.
No | Inspect the following: • Damaged valve seat • Worn valve stem and valve guide • Worn or stuck piston ring • Worn piston, piston ring or cylinder • Improper valve timing Service if necessary.
19 | Inspect fuel injector. (See FUEL INJECTOR INSPECTION [MZR-CD (RF Turbo)].) Is the fuel injector normal? | Yes | Go to the next step.
No | Repair or replace if necessary. (See FUEL INJECTOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])
20 | Inspect the timing belt for the following: • Chipping of gear teeth • Low tension • Breakage damage or cracks Is the timing belt normal? | Yes | Inspect the following: • Clutch slippage • CKP sensor • VSS If normal, remove and inspect the supply pump and common rail.
No | If the timing is incorrect, adjust the valve timing. If the timing belt is not normal, replace the timing belt.
21 | Verify test results. • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [MZR-CD (RF Turbo)].) • If the malfunction remains, inspect the related Service Information and perform repair or diagnosis. - If the vehicle is repaired, troubleshooting completed. - If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if later calibration is available. Retest.