How to reset anti-theft system on a 2003 Infinity

Presumably you disconnected the battery when you did the fuel pump and PCM? It also looks like the PCM has to be programmed with the VIN Number.

https://www.google.com/search?q=2000+lincoln+navigator+pcm


To reset the 2000 lincoln navigator anti-theft system press and hold any button on your remote within 20 seconds of the eighth turn. Hold the button for as long as 20 seconds until the locks automatically click and release. Remove the key from the ignition to stop the reset cycle.

How do i perform the 2000 Lincoln Navigator anti theft reset?

More on the anti-theft system

https://www.google.com/search?q=2000+lincoln+navigator+security+reset
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Ford's PATS anti-theft system disables the starter from spinning the engine . Flashing real fast while trying to start the vehicle means the vehicle see's wrong key code ,think's the vehicle is being stolen . Code's stored in the computer , FORD dealer , nothing you can or should do .

try reseting the computer by leaving the battery unhooked for about 30 min. if that doesnt work then it may be a clogged fuel filter or you could check the fuel shut off switch in the trunk behind the drivers trunk panel.

You probably can't.
If the anti-theft module is in the cluster, you would need the correct key chip for the car the cluster came out of.
You might be able to bypass the passkey system by running a wire to the fuel pump relay and other components.
You may need a shop manual to find the circuits.

The anti-theft system will keep the car from being driven, so I would start there. You may need to reset the anti-theft or check the ignition key for problems.

Maybe it's the anti-theft system an not the remote start . Is the SECURITY light lit on the instrument cluster ? GM anti-theft systems will disable the fuel injectors if there is a problem .

the shop that told you they ripped it out only ripped you off unless they removed some aftermarket alarm system i,m a gm mechanic and if you remove the factory anti-theft on a 2003 olds alero it will not run ever again until re-installed make sure your battery is charged good turn igntion switch to run position but do not try to start security light should be flashing let car sit with switch on and light flashing for ten minutes light should stop flashing now start your car this is how to reset anti-theft was that worth $400.00 and again why let a bussiness named brakemax look at a no start condition keep on and you will be BROKE to the max HOPE THIS HELPS AND STAY AWAY FROM THEM YOUR FRIEND @ HELPMAX