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Home >> Nissan-Datsun >> 2008 >> Sentra Base, Automatic CVT >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P0506 To P2A00 (MR20DE) >> DTC P1217 Engine Over Temperature >> Main 13 Causes of Overheating
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Main 13 Causes of Overheating

CAUSES OF OVERHEATING

Engine Step Inspection item Equipment Standard Reference
OFF 1
  • Blocked radiator
  • Blocked condenser
  • Blocked radiator grille
  • Blocked bumper
  • Visual
 No blocking -
2
  • Coolant mixture
  • Coolant tester
 50 - 50% coolant mixture See "ANTI-FREEZE COOLANT MIXTURE RATIO ".
3
  • Coolant level
  • Visual
 Coolant up to MAX level in reservoir tank and radiator filler neck See "LEVEL CHECK ".
4
  • Radiator cap
  • Pressure tester
 59 - 98 kPa (0.6 - 1.0 kg/cm2 , 9 - 14 psi) (Limit) See "CHECKING RADIATOR CAP ".
ON(2) 5
  • Coolant leaks
  • Visual
 No leaks See "CHECKING COOLING SYSTEM FOR LEAKS ".
ON(2) 6
  • Thermostat
  • Touch the upper and lower radiator hoses
 Both hoses should be hot See "THERMOSTAT ", and "RADIATOR "
ON(1) 7
  • Cooling fan
  • CONSULT-III
 Operating See trouble diagnosis for DTC P1217 ( "DIAGNOSTIC PROCEDURE ").
OFF 8
  • Combustion gas leak
  • Color checker chemical tester 4 Gas analyzer
 Negative -
ON(3) 9
  • Coolant temperature gauge
  • Visual
 Gauge less than 3/4 when driving -
  • Coolant overflow to reservoir tank
  • Visual
 No overflow during driving and idling See "CHANGING ENGINE COOLANT ".
OFF(4) 10
  • Coolant return from reservoir tank to radiator
  • Visual
 Should be initial level in reservoir tank See "LEVEL CHECK ".
OFF 11
  • Water control valve
  • Remove and inspect the valve
 Within the specified value See "WATER OUTLET AND WATER CONTROL VALVE "
OFF 12
  • Cylinder head
  • Straight gauge feeler gauge
 0.1 mm (0.004 in) Maximum distortion (warping) See "CYLINDER HEAD ".
13
  • Cylinder block and pistons
  • Visual
 No scuffing on cylinder walls or piston See "CYLINDER BLOCK ".
(1) Turn the ignition switch ON.
(2) Engine running at 3, 000 RPM for 10 minutes.
(3) Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
(4) After 60 minutes of cool down time.

For more information, refer to "OVERHEATING CAUSE ANALYSIS ".
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