Vehicle Questions and Answers
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Why does my Land Rover Discovery 3 crank but fail to start?
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3 answers
★ Top Answer
To troubleshoot issues with your Land Rover Discovery 3, start by ruling out the immobilizer system. If your vehicle is cutting out after starting, it could be due to the anti-theft system being activated. Next, check the crank position sensor. A faulty sensor may prevent the engine from starting when hot but work fine when cooled. Additionally, inspect the fuel supply and spark delivery. If the engine stalls immediately, it could indicate a lack of fuel or spark. If the spark plugs are not firing, the fuel is not being ignited, resulting in a failed start. If all these systems check out, you may have a fuel pressure issue or a blocked intake manifold, though this is uncommon.
More answers
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It's a diesel engine that doesn't require spark plugs.
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If a Land Rover Discovery 3 starts up but won't turn off, the issue is typically due to a faulty fuel sending unit or spark plugs.
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