I have a 98 4 cyl and replace the alt. fouled plugs after intall and replaced. after running good for 1k started stalling at start. finallly plugs fouled again would not start. New plugs got another 1k it is starting over again. replaced wires did nothing.??????????:iceslolan THis car runs really good other wise. I can't understand it???

I have a 98 4 cyl and replace the alt. fouled plugs after intall and replaced. after running good for 1k started stalling at start. finallly plugs fouled again would not start. New plugs got another 1k it is starting over again. replaced wires did nothing.??????????:iceslolan THis car runs really good other wise. I can't understand it???

your writing style is less than desireable. it really makes it hard to understand your symptoms. What was your symptoms leading to the replacement of the alternator.
Battery not charging?
You might want to check all the associated wiring. Battery positive cable, negative cable to ground. Try connecting a good ground from the battery neg directly to the body. You could have a ground problem effecting you engine managment system.
You should also check to see if you have 12v at the PCM main terminal. Finally, check to see your battery is able to deliver all the power it needs to. Rule out these things before you start getting into sensor problems.
Do you have a CEL?