Nissan Sentra manuals

Nissan Sentra Service Manual: Symptom diagnosis

OVERHEATING CAUSE ANALYSIS

Troubleshooting Chart

  Symptom

Check items

Cooling system parts malfunction Poor heat transfer Water pump malfunction Worn or loose drive belt —
Thermostat stuck closed Engine coolant circulation
Damaged fins Dust contamination or rock clogging
Mechanical damage
Clogged radiator cooling tube Excess foreign material (rust, dirt, sand, etc.)
Reduced air flow Cooling fan does not operate Fan shroud and motor as- High resistance to fan rota- sembly —
High resistance to fan rotation
Damaged fan blades
Damaged radiator shroud — Radiator shroud —
Improper engine coolant mixture ratio — Engine coolant viscosity —
Poor engine coolant quality — Periodic maintenance —
Insufficient engine coolant Engine coolant leaks Cooling hose Loose clamp
Cracked hose
Water pump Poor sealing
Radiator cap Loose
Poor sealing
Radiator O-ring for damage, deterioration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tank Exhaust gas leaks into cooling system Cylinder head deterioration
Cylinder head gasket deterioration
Except cooling system parts malfunction

—

Overload on engine Abusive driving High engine rpm under no load
Driving in low gear for extended time
Driving at extremely high speed
Powertrain system malfunction

—

Installed improper size wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air flow Blocked radiator grille Installed car brassiere —
Blocked bumper
Blocked radiator
Blocked condenser Mud contamination or paper clogging
Installed large fog lamp
System description
DESCRIPTION Engine Cooling System Schematic CVT Models Radiator Water inlet Reservoir tank Thermostat Engine oil cooler Thermostat housing Water pump Cylinder head Cylinder b ...

Periodic maintenance
ENGINE COOLANT System Inspection WARNING: Do not remove the radiator cap when the engine is hot. Serious burns could occur from high pressure engine coolant escaping from the radiator. Wr ...

Other materials:

SRS Air bag warning lamp does not turn ON
Diagnosis Procedure 1.CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUIT Check combination meter unit power supply and ground circuit. Refer to MWI-52, "COMBINATION METER : Diagnosis Procedure". Is the inspection result normal? YES >> GO TO 2. NO >> Repair or r ...

Symptom diagnosis
Multi av system Symptom table Related to audio Related to hands-free phone Before performing diagnosis, confirm that the cellular phone being used by the customer is compatible with the vehicle. It is possible that a malfunction is occurring due to a version change of the ph ...

Symptom diagnosis
CVT CONTROL SYSTEM Symptom Table The diagnosis item number indicates the order of check. Start checking in the order from 1. ...

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