What would cause my engine to run very rough until it warms up? on 1997 Ford Aerostar

After it warms up it runs ok. Check engine light is on.

1 answer
Stop by the parts store some will scan for free. if you can find out the code that is causing your light to be on, you will have a better idea what part to look at. There can be several things that make it run rough. Really need the code.