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HOMESERVICE MANUALSMAZDA2006B4000 BASE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE SYMPTOM TROUBLESHOOTING - (5 OF 5)SYMPTOM TROUBLESHOOTING CHART - CHARGING SYSTEMCHARGING SYSTEM PINPOINT TEST 7: GENERATOR IS NOISY
2006 Mazda B4000 Base, Automatic

Charging System Pinpoint Test 7: Generator Is Noisy

2006 Mazda B4000 Base, AutomaticSECTION Charging System Pinpoint Test 7: Generator Is Noisy
CHARGING SYSTEM PINPOINT TEST 7: GENERATOR IS NOISY

PINPOINT TEST 7 GENERATOR IS NOISY
STEP INSPECTION ACTION
1 CHECK FOR ACCESSORY DRIVE NOISE AND MOUNTING BRACKETS
  • Key in OFF position.
  • Check the accessory drive belt for damage and correct installation.
  • Check the accessory mounting brackets and generator pulley for looseness or misalignment.
  • Is the accessory drive OK? 
 Yes Go to next step.
No Repair as necessary. See DRIVE BELT INSPECTION - 2.3L for the 2.3L, or See DRIVE BELT INSPECTIONDRIVE BELT INSPECTION - 3.0L for the 3.0L engine, or See DRIVE BELT INSPECTION - 4.0L for the 4.0L engine for diagnosis and testing of the accessory drive system. Test the system for normal operation.
2 CHECK GENERATOR FOR ELECTRICAL NOISE
  • Disconnect: Generator 0117-01.
  • Key in START position.
  • With the engine running, determine if the generator is still noisy.
  • Is the noise still present? 
 Yes Go to next step.
No Install a new generator. See GENERATOR REMOVAL / INSTALLATION - 2.3L , or See GENERATOR REMOVAL / INSTALLATION - 3.0L . Test the system for normal operation.
3 CHECK GENERATOR FOR MECHANICAL NOISE
  • Turn all accessories off. With the engine running, use a stethoscope or equivalent listening device to probe the generator for unusual mechanical noise.
  • Is the generator the noise source? 
 Yes Install a new generator. See GENERATOR REMOVAL / INSTALLATION - 2.3L , or See GENERATOR REMOVAL / INSTALLATION - 3.0L . Test the system for normal operation.
No See SYMPTOM TROUBLESHOOTING CHART - ENGINE MECHANICAL to diagnose the source of engine noise.
RENDER: 1.0x

NO RELATED

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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.