Question edited for clarity.
Question moved from Motorcycles to model category.
You can't bypass vehicle alarm and security systems. They are there to stop exactly what you are trying to do. You have two computers, the ECM and BCM, plus the alarm module and a number of sensors protecting the vehicle from theft and unauthorized removal. You can't trick them because you can't reprogram them.
Either do a security system reset or find an auto electrician or locksmith / alarm installer. Cheaper than the dealership!
https://www.google.com/search?q=mobile+auto+electrician+near+me
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Hello again :>D
Question edited to add maker and complete the year.
Question moved to model category.
If you have California emissions, then you will have 3 sensors. If you are getting a P0420 code, you can try changing the upstream sensor first. If you still get a P0420 code, then you will have to replace the manifold/catalytic convertor.
https://www.google.com/search?q=2008+Ford+Fusion+2.3.+Mine+has+3+x+o2+sensors
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WHAT ARE YOU ASKING, HOW TO MOVE YOUR HANDS TO DO THIS, THE JOB STEPS ,STEP BY STEP AND TOOLS>?
THE SERVICE MANUAL COVERS THIS, (NONE ARE FREE)
BUY ONE?
YOU DID NOT ASK FOR ROUTING SO IT DID NOT FALL OFF YET.
IT HIS HERE, I PAY ,YOU PAY?
https://eautorepair.net/Marketing/Default.asp
Question edited to add in 'year make model'.
Question moved to model category.
Jeff Armer is the Expert Auto electronics Expert on the site, but I found two ways to reset the Security System and Immobilizer.
https://www.google.com/search?q=2008+ford+fusion+security+reset
Insert the key into the driver's side door lock.
Turn the key once, but not all the way to unlock the door. Leave the key in this position for 40-60 seconds. ...
Do this again, but turn the key in the opposite direction.
Remove the key from the door, get into your Ford, and start the engine. The system should be reset.
Question edited for clarity.
Question moved to make model category.
'was not discussed here', because you didn't ask here?
https://www.fixya.com/users/plantsower
Perhaps these 4 videos will help?
https://www.google.com/search?q=2012+Ford+Fusion+clock
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Fill it with Good gas and fuel stabilizer to dilute the bad gas.
Or disconnect the pipe from the fuel tank and use the pump to pump the gas out. Make sure you stop as soon as flow stops because the fuel in the tank lubricates and cools the pump.
Or you can syphon it out with a length of 1/2" plastic tube.