3.8 #1 misfire on my grand caravan

If you have a digital multimeter, you can check to see if there is 12 volts D.C. To one side and it will pulse ground to the other pole of the injector when car is running. You can also swap plug wires from one cylinder to another and see if the miss follows it. You can also listen to the injectors with a stethoscope for a difference in the way they click. They have been known to have injectors hang up or partially clog, ecm injector drivers fail, or ignition/ compression problems. Also, I hope you know that cylinder 1 is the rear bank