When faced with the frustrating issue of an ignition key that won't turn in your 1991 Land Rover Range Rover, it's essential to adopt a methodical diagnostic approach. Start by checking for the simplest problems, such as a locked steering wheel, which can often be resolved by gently wiggling the wheel while attempting to turn the key. If that doesn't work, inspect the ignition lock for mechanical issues; bent or stuck wafers may require lubrication with graphite or a light penetrating oil to free them up. If lubrication fails, consider the possibility of needing a locksmith's assistance for more complex repairs. Next, evaluate the electrical system, particularly the immobilizer, as a malfunction here can prevent the key from turning. A quick reset by disconnecting the battery may help. Additionally, ensure that you are not applying excessive lateral pressure on the key, as this can hinder its movement. Lastly, check for any signs of corrosion or alarm system activation that could be interfering with the ignition process. By following this structured approach, you can effectively troubleshoot and potentially resolve the issue without resorting to costly repairs.

When dealing with a 1991 Land Rover Range Rover, several common issues can hinder the ignition key from turning. One prevalent problem is the steering lock tension, which can often be alleviated by gently wiggling the steering wheel while attempting to turn the key. Additionally, damaged or stuck wafers within the ignition lock can obstruct the key's movement; applying a lubricant like graphite powder may offer a temporary solution, but a more permanent fix would involve repairing or replacing these wafers. The ignition lock mechanism itself may also fail or wear out over time, necessitating a replacement that could lead to the inconvenience of using different keys for the doors and ignition unless properly matched. Furthermore, lubrication issues caused by dirt or grime buildup can cause the key to stick, and using a suitable lubricant while tapping the key gently can help dislodge any stuck tumblers. Alarm system or immobilizer malfunctions can also interfere with ignition, so ensuring these systems are functioning correctly is crucial. Lastly, proper key alignment is essential; inserting the key with minimal lateral force can prevent it from turning. By understanding these common issues, DIY enthusiasts can effectively troubleshoot and address the ignition problems in their Land Rover.