Ford Mustang Forum - View Single Post - 2000 Ford Mustang alarm problems
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post #3 of (permalink) Old 07-25-2012
cvmanroe07
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Joined: Jul 2012
Location: SF bay
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i know this is about a month old, but for anyone else with the issue:

not sure if this is YOUR problem, but I recently tried programming new keys for my 2000 mustang and happen to know that when you try to use a key that is NOT recognized by the car's computer (key is cut properly but not programmed), the theft light flashes really fast when it is inserted into the ignition. also, the engine will attempt to start but no gas will be pumped into the engine (the lack of programming stops the fuel pump from what I understand).

check at a dealership/key shop, your key battery may have died if it has one, or somehow the programming got messed up.
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