Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2005 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE

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

ENGINE STALLS-AFTER START/AT IDLE - DESCRIPTION AND POSSIBLE CAUSE

5

Engine stalls-after start/at idle

DESCRIPTION

Engine stops unexpectedly.

POSSIBLE CAUSE

A/C system operation is improper
Air leakage from intake-air system parts
Purge solenoid valve malfunction
Improper operation of IAC valve
EGR valve malfunction
No signal from CKP sensor due to sensor or related wire
Vacuum leakage
Low engine compression
Erratic signal to ignition coil
Poor fuel quality
PCV valve malfunction
Air cleaner restriction
Restriction in exhaust system
Electrical connector disconnection
Open or short circuit in fuel pump body and related harness
No battery power supply to PCM or poor GND
Inadequate fuel pressure
Fuel pump body mechanical malfunction
Fuel leakage from fuel injector
Fuel injector clogging
Immobilizer system and/or circuit malfunction
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 injuries 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.
    (See BEFORE REPAIR PROCEDURE .)
    
    (See AFTER REPAIR PROCEDURE .)

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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