Having Problems

[Wb1]

I have a 2002 Ford Explorer. I changed the Plugs and wires. Engine is now running rough and I am getting engine codes PO171 and PO201. Any Ideas

 

[1Aauto]

I have a 2002 Ford Explorer. I changed the Plugs and wires. Engine is now running rough and I am getting engine codes PO171 and PO201. Any Ideas

You may want to take a look at the plug wires when it's dark out to see if you have one arching out, which could be causing the truck to run rough.

Take a spray bottle with water in it and spray the plug wires while it's running, if there's a bad wire that's arching, you'll see if with the water.