Q: installed ignition lock cylinder on a 2000 Toyota 4runner. tried to crank it and it would start, immediately turns off. problem?

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I have a 2000 Toyota 4runner unlimited v6 automatic 2 wheel drive. My ignition lock cylinder wouldn't allow my key to turn. After several hours of troubleshooting i gave up and decided to replace it. I took off my negative battery cable and began to unscrew the panel to get to the ignition cylinder. After turning it to ACC i managed to get it out. I installed the new one and replaced everything and hooked the battery back up. Tried to crank it up and all it did was whined up. It never turned but once and immediately died. Im not sure what the problem is.

My car has 230000 miles.
My car has an automatic transmission.

Hello. If the key is not just turning and not catching then it may not be aligned with the ignition switch. If it is not aligned or if the ignition switch has failed then this will occur. Most of the time it is due to the ignition switch being broken internally so it needs to be removed and inspected for binding or internal looseness. If you need some help with this, consider YourMechanic, as a certified mechanic can come to you to [diagnose what is keeping the vehicle from starting] https://www.yourmechanic.com/services/car-is-not-starting-inspection

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