If there is excess oxygen in your exhaust system, fuel burns faster and your vehicle will be less capable when it comes to fuel economy. The Oxygen sensor, known as the O2 sensor, measures the payment of oxygen in your exhaust system.

Your O2 Sensor (Oxygen Sensor) needs to be replaced.

Over time, vacuum hoses can arid out and crack, especially if they’re exposed to capable heat or extreme chilly. If you notice that your RPM is high in idle or randomly surges, a vacuum leak could be the cause. The vacuum system also helps lower harmful emissions by routing the fumes as gasoline evaporates through the engine. Every Land Rover LR3 has a vacuum system that performs a wide difference of functions.

Your Land Rover LR3 has a vacuum leak.

If your Land Rover LR3 is having trouble starting, idling rough or has a quick change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor. As a part of the engine management system, the mass airflow sensor helps adjust to confident changes, like altitude. The mass airflow sensor in your Land Rover LR3 is what determines how much fuel is needed to run your engine efficiently by measuring the payment of air entering the engine.

Your mass airflow sensor (known as MAF) needs to be replaced.

Worn spark plugs and plug wires can cause clogged catalytic converter or damage to ignition coils and O2 sensors, extensive to more lavish repairs. In some extreme cases, your engine will have trouble starting or continuing to run. If you're spark plugs or spark plug wires are bad or old, you will experience poor performance and reduced power. The spark plug wires deliver the spark from the ignition coil to the spark plugs. This explosion is what moves the pistons and makes the engine run. The spark plugs are the part of your engine that ignites the air/fuel array in the combustion chamber of your vehicle.

New Spark Plugs or Plug Wires are needed for your Land Rover LR3.

Below is a list of the most common reasons your check engine light can come on: If your check engine light is flashing in your Land Rover LR3, we highly recommend not to drive the vehicle and schedule Land Rover service today. A steady glow typically means something less serious but a flashing check engine light indicates that your vehicle’s engine is in serious trouble and service is needed immediately. Depending on your make and model, the check engine light will illuminate or blink. Likewise, the check engine light could also be a warning of a serious problem that could cause serious damage to your engine and come with a hefty repair bill.

When your check engine light comes on, this could be as simple as tightening or replacing your gas cap. What could cause the check engine light to come on in a Land Rover LR3?

What causes check engine light to flash