one of your plug coils is bad. (possibly more,but if it's only just a 'sputter',1) You can have your mechanic replace it for about $100. Well worht the money for such a 'Grand' car. Or you can buy one and replace it yourself.
Obviously you have a fuel leak somewhere.
see CarTalk.com
radiator plugged.or coolant low
check plugs &wires
If your Grand Marquis cut off while driving, it could be due to several reasons, including fuel delivery issues, electrical problems, or a malfunctioning sensor. Common culprits include a clogged fuel filter, a failing fuel pump, or issues with the ignition system. Additionally, low battery voltage or a faulty alternator might cause the engine to stall. It's advisable to have a mechanic diagnose the problem to ensure proper repairs.
Air bag code 52 - intermittent or repaired lost battery feed
Then take it to a professional for repair of the SRS. This is not a repair job for a novice. Serious injury can occur when working with the SRS.
Spitting and sputtering while driving often indicates that the engine is misfiring or not running smoothly. This can be caused by issues such as faulty spark plugs, a clogged fuel injector, or problems with the ignition system. It may also signal an air-fuel mixture problem or issues with the exhaust system. If you notice these symptoms, it's advisable to have the vehicle inspected by a mechanic to prevent further damage.
Bad gas, fouled plug(s), engine out of time, vacuum line leak or clogged.
That could be any number of problems. Anything from bad fuel to an ignition system problem to a fuel system problem,etc. The list goes on.
It sounds like it is your coolant temp sensor.
Its the bushings on your suspension, It will cost $200 dollars to replace at a shop.