Mazda 3 - 12 Lack;Loss of Power-Acceleration;Cruise [Lf]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Downloaded from https://carmanualshub.com/ - automotive repair manuals website
583
• Engine mounts
• Check valve (two-way)
No
Inspect for cause.
21
Verify test results.
• 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.12 LACK/LOSS OF POWER-
ACCELERATION/CRUISE [LF]
B3E010318881W14
12
LACK/LOSS OF POWER - ACCELERATION/CRUISE
DESCRIPTION
Performance is poor under load (such as power down when climbing hills).
POSSIBLE
CAUSE
• Improper A/C system operation
• Erratic signal or no signal from CMP sensor
• Air leakage from intake-air system parts
• Restriction in intake-air system
• Intake-air temperature too hot
• Improper variable intake-air control operation
• Improper variable tumble control operation
• Purge valve malfunction
• Improper EGR valve operation
• Brake dragging
• Erratic signal from CKP sensor
• Low engine compression
• Vacuum leakage
• Poor fuel quality
• Erratic signal to ignition coil
• Engine overheating