Hi, I have a 2001 Stratus. Out of the clear blue it starts misfiring. i have changed the air filter, added fuel injector cleaner, changed plugs and plug wires. i can "feel" some improvement, but it's still a bit rough. my diagnostic tool shows P0304- #4 misfire-with a flashing check engine light. anyone have any additonal ideas? Thanks for any help !!

 

2001 stratus.... Thats all the info you can give?

Coupe/sedan, v6/4cyl, mileage?
We aren't mind readers.

 

Sorry...2001 Stratus Sedan, 4 cyl, 2.4L DOHC @100K miles

 

I would try swapping out the distributor cap, and if you can, the rotor as well. I mentioned specifying between the two, because the coupe has a 2.4l SOHC with coils, no distributor.

 

The DOHC sedan has an ignition module. i took it to Autozone to have them check it out. It checked out OK. Next up is to do an OHM test on the injectors. Any idea what the resistance should be? i'm going to compare the different cylinders to each other and see what i get. Thanks for any help.

 

what type of injector cleaner are you using? The best cleaner you can use as a do it on your own type person is Techron from the parts store . Yes I think its better than seafoam. You may have a bad injector also . assuming you have good comp and spark ,and spark plug wires and dist cap and rotor. your ign module controlls spark for all cyl so if one is good all is good . you also want to ck your injector signal. un plug the injector turn on the key you should have power to one side. then connect yout test light between the to pins in the connector and start the eng the light should flash if not there is a problem with your pcm