2001 ford zx2 auto runs in park but when driving stalls then starts up again i'm lost?

I've changed air filter, fuel filter, iac, plugs and wires, timing belt, cam sensor, and coil pack.

Only code its on the car is the can sensor I'm at a complete loss.

Dies but restarts. Poor idle quality in drive, so it has OBDII, are the codes leading you to a crank position sensor? Perhaps no code but if it can't pass the pinpoint tests for a crankshaft position sensor, then you must replace it. EDIS may be the area for diagnostic attention. Tech service bulletins and recalls must be consulted too. Some of these type problems are fixed by an update. The electronics are just baked and relocating them away from engine heat and vibration has proved very helpful.
The driveability techs at Ford always verify fuel pressure and rest pressure as well as look for decrease caused by fuel vaporization due to engine compartment heat as part of their thorough checks. Its also possible there's still a concern with one or more of your new parts as well. You need help from a driveability tech to figure it out now.

The Cam sensor Circuit is the problem.
Either the wire, the plug or the sensor itself, but that's the problem.
The cam sensor tells the position of the cam shaft.
This is very important for the computer to control fuel delivery & timing of the engine. Especially when the engine experiences a load.
When the vehicle is in park, there's no load on the engine.

Try to use car code read tool to read the codes, and then you can find out what's wrong. You can find many car code read tools from obd2life.com

I analyze things starting with the posting. There's no grammatical discipline. Ford ZX2 is not capitalized. There are three sentences, all mashed into one. The classic texting slang super bad error "i'm" is present. The is not such thing as "iac" and "can" as to vehicles. A "can" is a metal container such as a can of vegetables. You provide a random list of car parts that, apparently and according to you, could be the solution? Really? I doubt that the "timing belt" you mention is the actual timing belt in the car. The timing belt is an internal belt that requires special training, tools, practice and supervsion to be changed. Then the procedure. Since you are not a trained, certified and experienced mechanic you have opted to guess. The list you gave is a list of items any kid or broke person with an older car and mechanical issues, perceives he can do. You might as well changed the cabin air filter as well! Every day in the USA people like you, young, no training, can't write, without discipline and advise BEFORE starting anything, WASTE tons of money in order to avoid a car mechanic, a person perceived to be avoided at all costs, for whatever cultural reason. The list of times replaced needs to be added as to cost. That is wasted money. The time spent? Wasted time. The aggravation and frustration? Not necessary. Here is the worse part. In view of these facts, in spite of the reality of the situation as to this Ford product YOU INSIST on continuing TO DO THE SAME. It has been said that a basic definition of insanity is to do the same thing over and over again expecting different results. After four years of advising kids on this site as to automobile issues, the answer is the same to the same problem. Go find a mechanic. I theorize, with good evidence to support that theory, that a mechanic would have located the problem within one hour of work and repaired the problem very soon after that. Since only a mechanic can make this determination and provide you with an estimate as to repairs, that needs to be done. You need to stop wasting money. Just like your writing is in poor grammatical discipline, and this English writing is covered in our schools since third grade, your discipline as to car matters repeats this pattern. I have a closing statement. You claim to be at a complete loss? You were lost from the start. Not wise, not advisable, not economical and never recommended to work on items you are not trained. You would do this with a refrigerator, stove, air conditioner, heating system at home or electrical work at home. Why the car? Custom, tradition, folklore, etc. That started with the first vehicles in the early 1900's because all cars were home made back the. Simple and not engineered and not with any sort of standard. Here is a photo of an Oldsmobile. Not too many parts, mostly all mechanical and simple. I have been to a car show a few years ago and actually met a grand daughter of Mr.Olds. She owned a vehicle like this one. Not much to. Today's car are highly complex machines. It takes months and months of school work, tests, review, practice, hands on qualifications to become an American Society of Engineers (ASE) certified mechanic. Go find one and stop wasting your time and money.