94 aerostar start-up problem
 

i got a 94 aerostar and it doesnt want to start up when it is in wet waether first thing in the morning.
i have had the coolent temp sensor replaced and the cap and rotor which were bad.
i had the spark plugs and ignition wires changed 2-3 years ago, also the cap and rotor were change then as well.
it starts good when it is very cold out, but when it warms up a bit and in wet weather it does not want to, it will start hrad then sputter out, then only fire after that with out starting.

any ideas?

Is it a 4.0 or a 3.0?