Mazda 3 - 11 Engine Stalls;Quits, Engine Runs Rough, Misses, Buck;Jerk, Hesitation;Stumble, Surges [Lf]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Downloaded from https://carmanualshub.com/ - automotive repair manuals website
577
• If normal, return to diagnostic index to service any additional symptoms.
(See ENGINE SYMPTOM TROUBLESHOOTING [LF].)
• If malfunction remains, inspect related Service information perform repair or diagnosis.
- If vehicle repaired, troubleshooting completed.
- If vehicle not repaired or additional diagnostic information not available, replace the
PCM.
(See PCM REMOVAL/INSTALLATION [LF].)
NO.11 ENGINE STALLS/QUITS, ENGINE RUNS
ROUGH, MISSES, BUCK/JERK,
HESITATION/STUMBLE, SURGES [LF]
B3E010318881W13
11
ENGINE STALLS/QUITS - ACCELERATION/CRUISE
ENGINE RUNS ROUGH - ACCELERATION/CRUISE
MISSES - ACCELERATION/CRUISE
BUCK/JERK - ACCELERATION/CRUISE/DECELERATION
HESITATION/STUMBLE - ACCELERATION
SURGES - ACCELERATION/CRUISE
DESCRIPTION
• Engine stops unexpectedly at the beginning of acceleration or during acceleration.
• Engine stops unexpectedly while cruising.
• Engine speed fluctuates during acceleration or cruising.
• Engine misses during acceleration or cruising.
• Vehicle bucks/jerks during acceleration, cruising, or deceleration.
• Momentary pause at beginning of acceleration or during acceleration
• Momentary minor irregularity in engine output
POSSIBLE
CAUSE
• Improper A/C system operation
• Erratic signal or no signal from CMP sensor
• Air leakage from intake-air system parts
• Purge valve malfunction
• IAC valve improper operation
• EGR valve malfunction
• Erratic signal from CKP sensor
• Low engine compression