Help, I have 98 carvan and it will not stay on it idles down then shuts off,then I hear a clicking noise, I have changed oil and spark plugs and wires. anyone have any idea what could be causing this? The van starts with no problem but it will not stay started.

 

Welcome to DF
Remove the throttle body and clean the throttle blades and remove AIS motor and clean too. If that doesn't fix the idle problem, then you may need an AIS motor.