Land Rover Discovery Owners Handbook Exp Rover
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Catalytic converter 74 CATALYTIC CONVERTER The exhaust system on most petrol engine vehicles and some diesel vehicles incorporates a catalytic converter, which converts poisonous exhaust emissions from the engine into environmentally less harmful gases. WARNING The catalytic converter can be easily damaged through improper use, particularly if the wrong fuel is used, or if an engine misfire occurs. For this reason it is VERY IMPORTANT that you heed the precautions which follow:Filling up with fuel · For petrol engine vehicles ONLY use unleaded petrol (leaded fuel will destroy the catalyst and seriously damage the emission control system). Starting the engine · DO NOT continue operating the starter if the engine fails to start after a few attempts (unburnt fuel may be drawn into the exhaust system, thereby poisoning the catalyst) - seek qualified assistance. · When starting a COLD engine, DO NOT drive if a misfire is suspected - seek qualified assistance.
Catalytic converter 75 Driving · Provided the engine has reached its normal operating temperature, if a misfire is suspected or the vehicle lacks power while driving, it may be driven SLOWLY (at risk of damaging the catalyst) to a Land Rover dealer for assistance. · NEVER allow the vehicle to run out of fuel (the resultant misfire could destroy the catalyst). · Engines burning excessive oil (blue smoke from the exhaust) will progressively reduce catalyst efficiency. · On rough terrain do not allow the underside of the vehicle to be subjected to heavy impacts which could damage the catalytic converter. · DO NOT overload or excessively rev the engine. WARNING Exhaust system temperatures can be extremely high - DO NOT park on ground where combustible materials such as dry grass or leaves could come into contact with the exhaust system (in dry weather a fire could result). Switching off· DO NOT switch off the engine while a forward or reverse gear is selected. Vehicle maintenance · Any engine misfire, loss of engine performance or engine run-on, could seriously damage the catalytic converter. For this reason, it is vital that unqualified persons do not tamper with the engine, and that regular systematic maintenance is carried out by a Land Rover dealer. · DO NOT run the engine with a spark plug or HT lead removed, or use any device that requires an insert into a spark plug.
Fuel filling 76 PETROL ENGINES: All engines fitted with a catalytic converter: Use ONLY - 95 RON UNLEADED fuel. Engines without a catalytic converter: Use 95 RON UNLEADED petrol wherever possible. In territories where only LEADED fuel is available, the following specifications apply: V8i high compression engines (9.35:1) - use 97 RON fuel. V8i low compression engines (8.13:1) - use 90 RON fuel. NOTE: Leaded fuel is NOT suitable for MPi engines The RON value (octane rating) of petroleum commonly available at garage forecourts will vary in different countries. The RON value quoted is the MINIMUM requirement and while this can be safely exceeded, no advantage in performance or fuel economy will be gained by using a higher octane fuel. Using unleaded petrol with a lower octane rating, however, can cause persistent, heavy engine knock (a metallic rapping noise). If severe, this can lead to engine damage. If heavy engine knock is detected when using the recommended octane rated fuel, or if steady engine knocking is present while maintaining a steady speed on level roads, contact your dealer for advice. NOTE: An occasional, light, engine knock while accelerating or climbing hills is acceptable. WARNING On petrol engine vehicles fitted with a catalytic converter, serious damage to the catalyst will occur if LEADED fuel is used! DIESEL (300Tdi engines): The quality of diesel fuel (Derv) can vary in different countries and only clean, good quality fuel should be used. It is important that the sulphur content of diesel fuel does not exceed 1%; in Europe all supplies should be within this limit, but in other parts of the world, you should check with your supplier. Ensure the fuel filter element is changed at the recommended service intervals and clean the sediment bowl regularly.NOTE: The use of paraffin (kerosene) as a diesel fuel additive is illegal in the UK. WARNING On diesel engine vehicles, if the fuel tank is accidentally filled with petrol it is ESSENTIAL that you contact your dealer BEFORE attempting to start the engine!
Fuel filling 77 Locking and unlocking the fuel filler flap WARNING To avoid any sudden discharge of fuel while removing the cap, rotate the cap one half turn to allow the fuel tank to vent. DO NOT fully remove the cap until any hissing has stopped.
Fuel filling 78 Fuel filling Filling station pumps are equipped with automatic cut-off sensing to avoid fuel spillage - only fill the tank until the filler nozzle automatically shuts off. DO NOT attempt to fill the tank beyond this point or spillage could result due to expansion of the fuel. Petrol engine vehicles: On petrol engine vehicles which are designed to operate ONLY on unleaded fuel, the fuel tank filler neck will ONLY accept a narrow filler nozzle of the type found on pumps that deliver unleaded fuel. On petrol engine vehicles which are designed to operate on leaded fuel, the fuel tank filler neck will accept the wider filler nozzles found on pumps that deliver LEADED fuel. WARNING DO NOT fill the tank completely if the vehicle is to be parked on a slope in direct sunlight or high ambient temperature - expansion of the fuel could cause spillage.
Fuel filling 79 Empty fuel tank DO NOT RUN THE FUEL TANK DRY! In the case of vehicles equipped with a catalytic converter, running the fuel tank dry could create an engine misfire capable of damaging the catalytic converter. In the case of diesel engine vehicles, qualified assistance will be required to prime the fuel system before the engine can be restarted. SAFETY ON THE FORECOURT Petroleum gases are highly inflammable and in confined spaces are also explosive. Always take sensible precautions when refuelling: · Switch off the engine. · Do not smoke or use a naked flame or light. · Take care not to spill fuel. · Do not overfill the tank. FUEL CUT-OFF SWITCH (Petrol engine vehicles only) The fuel cut-off switch is a safety device which, in the event of a collision or sudden impact, automatically cuts off the fuel supply to the engine. The switch is located on the engine compartment bulkhead behind the washer reservoir. After an impact, the switch must be reset by pressing the rubber top (arrowed in illustration) before the engine can be restarted. ALWAYS check for fuel leaks before resetting the switch!
Gearbox & transmission 80 MANUAL TRANSMISSION Manual transmission vehicles feature a five speed main gearbox and a two-speed transfer box. In addition, a central differential in the transfer box distributes the drive to the front and rear axles, providing permanent four wheel drive. By using the main gearbox in conjunction with the transfer gears, ten forward and two reverse speeds are available. The gear positions for the main gearbox are shown on the gear lever knob. Note that when the gearbox is in neutral, the gear lever is spring-loaded to automatically align between third and fourth gear positions.Clutch DO NOT use the clutch pedal as a foot rest. To prevent unnecessary wear, always keep the left foot well clear of the clutch pedal except when changing gear. WARNING Do not select reverse gear unless the vehicle is stationary. DO NOT attempt to start the engine with the vehicle in gear and the clutch pedal depressed. The engine must ONLY be started with the main gear lever in neutral and the handbrake applied.
Gearbox & transmission 81 AUTOMATIC TRANSMISSION The Automatic transmission features a four speed main gearbox with a torque converter and a two speed transfer box. A central differential in the transfer box distributes power to both front and rear axles, providing permanent four wheel drive. Using the main gearbox in conjunction with the transfer gearing produces eight forward and two reverse speeds. Main gearbox selector lever A spring loaded catch restricts movement of the lever, thereby preventing inadvertent gear selection. Press and hold the button (arrowed in illustration) to release the catch whilst moving the lever to the required position. NOTE: Gear selection between D and 3 may be made without holding in the button.Selector lever positions P Park In this position the transmission is locked to prevent the vehicle from rolling away. Select ONLY with the vehicle stationary and the handbrake on. R Reverse Select ONLY when the vehicle is stationary. N Neutral Use this position when the vehicle is stationary and the engine is to idle for a prolonged period (eg. at traffic lights). D Drive Select Drive for all normal driving on good road surfaces; fully automatic gear changing occurs on all four forward gears according to vehicle speed and accelerator position.
Gearbox & transmission 82 3 1st, 2nd and 3rd gears Automatic gear changing is limited to first, second and third gears only. Use in congested traffic conditions and for town driving. 2 1st and 2nd gears Automatic gear changing is limited to first and second ratios only. Use when driving up steep gradients and for negotiating very narrow twisting roads. This position also provides moderate engine braking for descending slopes. 1 1st gear only Use on very severe gradients, particularly when towing, and when maximum engine braking is required. WARNING Always leave the vehicle with the gear selector in P (Park) position when parked.Starting and driving Drivers unfamiliar with the performance characteristics of an automatic gearbox should thoroughly familiarise themselves with the following instructions before driving. · Before starting the engine, ensure that both foot brake and handbrake are applied. · After starting the engine, KEEP BOTH BRAKES APPLIED before and whilst moving the selector lever to the required drive position. · Keep the brakes applied until you are ready to move - remember, once a drive position is selected, an automatic will tend to creep forward (or backward). · Never rev the engine while selecting a forward or reverse drive gear, or while the vehicle is stationary with a drive gear selected - remember, an automatic will move immediately the accelerator pedal is pressed.
Gearbox & transmission 83 Gear change speeds With D selected, the road speed at which gear changes take place will vary according to the position of the accelerator: minimum acceleration will result in low road speed gear changes, while larger throttle openings will cause the gearbox to delay gear changes until faster road speeds have been reached (thereby increasing acceleration). With practice, gear changes can be made to occur at a wide range of road speeds depending on accelerator pedal pressure. On long inclines the gearbox will sometimes change back and forth between gears. This occurs because the transmission does not include a ratio that is precisely right for the particular incline and vehicle loading circumstances. However, excessive gear changing results in a loss of momentum and is wasteful of fuel. It can be prevented by selecting the 3 or 2 positions which limit the gearbox to lower ratios.Kick-down To provide rapid acceleration for overtaking, push the accelerator pedal to the full extent of its travel in a single quick movement (known as kick-down). Up to a certain speed, this will cause an immediate downshift into the lowest appropriate gear, followed by rapid acceleration. Once the pedal is relaxed, normal gear change speeds will resume (dependent upon road speed and accelerator pedal position). Cruise control On diesel engine vehicles fitted with cruise control, some fluctuation of road speed may be experienced when cruise control is operating at engine speeds below 1600 rev/min. In these circumstances, move the selector lever to position 3; this will limit gear changing to the first, second and third ratios only, thereby reducing fluctuation of engine speed.