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Home >> Mazda >> 2017 >> 5 GS, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine Control >> No. 5 Engine Stalls-After Start/At Idle >> Notes

No. 5 Engine Stalls-After Start/At Idle: Notes

NO. 5 ENGINE STALLS-AFTER START/AT IDLE DESCRIPTION AND POSSIBLE CAUSE

5 ENGINE STALLS-AFTER START/AT IDLE
DESCRIPTION
  • Engine stops unexpectedly at idle and/or after start.
POSSIBLE CAUSE
  • Air cleaner restriction
  • Improper installation of EGR valve
  • Electrical connector disconnected
  • Poor fuel quality
  • Ignition wiring malfunction
  • Air leakage from intake air system
  • Intake air system restriction
  • Improper operation of drive-by-wire control system
  • Vacuum leakage
  • APP sensor or related wiring harness malfunction
  • TP sensor or related wiring harness malfunction
  • PCM continuous memory DTC is stored.
  • CKP sensor or related wiring harness malfunction
  • CKP sensor and teeth of crankshaft pulley malfunction
  • Ignition coil or related wiring harness intermittent malfunction
  • Ignition system malfunction
  • Spark plug malfunction
  • Exhaust system part malfunction
  • Excessive or insufficient fuel pressure
  • Fuel pump relay or fuel pump circuit malfunction
  • Restriction in fuel line
  • Pressure regulator malfunction (built-into fuel pump unit)
    • Fuel pump unit malfunction
  • Fuel leakage from fuel system
  • Fuel injector malfunction
  • Improper operation of A/C system
  • Purge solenoid valve malfunction
  • EVAP control system malfunction
  • EGR valve malfunction
  • Improper operation of variable valve timing control system
  • Low engine compression
  • Improper valve timing
  • PCV valve malfunction
    WARNING:
    • The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system:
  • 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 injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this service information. (See BEFORE SERVICE PRECAUTION .) (See AFTER SERVICE PRECAUTION .)
    CAUTION:
    • Disconnecting/connecting the quick release connector without cleaning it may cause damage to the fuel pipe and the quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.