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Home >> Mazda >> 2006 >> B3000 Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Symptom Troubleshooting - (4 Of 5) >> Symptom Troubleshooting Chart - Engine Cooling >> Cooling System Pinpoint Test 3: Engine Does Not Reach Normal Operating Temperature
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Cooling System Pinpoint Test 3: Engine Does Not Reach Normal Operating Temperature

COOLING SYSTEM PINPOINT TEST 3: ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE

PINPOINT TEST 3 ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE
STEP INSPECTION ACTION
1 CHECK THE ENGINE TEMPERATURE
  • Start the engine and allow the engine to idle for ten minutes.
  • Key OFF.
  • Feel the inlet and heater hoses and the underside of the upper radiator hose.
  • Are the upper radiator hose and the heater hoses cold? 
 Yes Replace the thermostat. See THERMOSTAT REMOVAL / INSTALLATION - 2.3L for 2.3L engine. See THERMOSTAT REMOVAL / INSTALLATION - 3.0L for 3.0L engine. See THERMOSTAT REMOVAL / INSTALLATION - 4.0L for 4.0L engine. Test the system for normal operation.
No See PINPOINT TEST 2: INCORRECT TEMPERATURE GAUGE INDICATION for diagnosis and testing of the engine coolant temperature gauge.
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