| Symptom | Possible Causes | Action |
|---|---|---|
| Coolant loss | Hoses Hose connections Radiator Water pump Heater core Gaskets Engine casting cracks Engine block core plugs | Carry out a visual inspection. If there are no obvious leaks, carry out a cooling system pressure test. Rectify any leaks as necessary. |
| Overheating | Low/Contaminated coolant Thermostat Viscous fan ECT sensor Restricted air flow over the radiator | Check the coolant level and condition. Carry out a cooling system pressure test. Rectify any leaks as necessary. Check the thermostat and rectify as necessary. Check the viscous fan operation, make sure the viscous fan rotates freely. Check for obstructions to the air flow over the radiator. Rectify as necessary. |
| Engine not reaching normal temperature | Thermostat Viscous fan Thermostat Electric fan Fan speed module | Check the thermostat operation. Check the viscous fan operation, make sure the viscous fan is not seized. Rectify as necessary. |
Contents
Section: Cooling Fan All sections- A/c Compressor
- Abbreviations
- Accessory Drive Belts
- Airbag
- Antenna Systems
- Anti-Lock/traction Control
- Automatic HVAC System
- Automatic Trans
- Auxiliary Emission Control Systems
- Basic Trouble Shooting
- Brakes
- Brakes Control Systems
- Cabin Air Filter
- Charging System
- Check Lists
- Collision/avoidance
- Communication Devices
- Cooling Fan
- Cruise Control Systems
- Diagnostic Connector Locations
- Differentials & Drive Axles
- Door Locks & Anti-Theft Systems
- Drive Cycles
- Driveline/axles
- Driveshaft & Universal Joints
- DTC Index
- Electrical Component Locations
- Electrical Component Locator: Component Locations
- Electronic Suspension
- Emission Applications
- Engine
- Engine (V8 5.0L Petrol): Removal & Installation
- Engine Control Systems
- Engine Performance
- Entertainment Systems
- Exhaust
- Exterior Body Panels
- Exterior Lights
- Exterior/interior Trim
- Frames, Subframes & Crossmembers
- Fuel System
- Gauges & Instrument Panels
- Heated Glass/defoggers
- Hoist/jack
- Horns
- Identification
- Ignition System
- Interior/illumination Lights
- Manual & Power Steering
- Mechanical
- Mechanical - Hydraulic
- Metric Conversions
- Mode 6
- Navigation System
- Oem General Information
- Reset Procedures
- Seats
- Specifications
- Starter
- Steering
- Steering Column
- Steering Column Switches
- Steering Linkage
- Sun Roof/t-Top/convertible Top
- Suspension
- Suspension Front
- Suspension Rear
- Testing & Diagnostics
- Traction Control Disable
- Transmission
- Warning System
- Wheel & Tire System
- Windows
- Wiper/washer Systems
- Wiring System (Data Link Connectors, Pwr Dist., Grnd Dist.)