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Repair guides and support for the Expedition, a full-size SUV based on Ford's F-150 pickup truck. Closely related to the Lincoln Navigator.

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1999 ford expedition theft light blinking error 23 won't start. New ke

1999 ford expedition theft light blinking error 23 won't start. New keys made and programmed still not working. I tried every short cut listed on the web. Still no start. I replaced the ECM board, reset all the boards with unconnected ground to positive on battery. Still no start. I have an aftermarket fab been working no problems. It locks and unlocks the doors. Please, I need my suv running.

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Has it been connected to a reader and shown any error codes? Guy on YouTube had the same issue and after clearing all the error codes the truck started.

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No i have an error code of catalytic converter sensors. Would that make it not start?

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I have reset all boards in suv with connecting removed ground to red on battery

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Still no start

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I've replaced everything but the starter

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Programming of key and new fab went OK, still no start.

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Alex Conor will be eternally grateful.
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