I have 104000 on my dodge 2004 stratus I take good care and its been good to me. Its missing I got a mis fire in # 1cyclender code . Relaced the coil plugs and wires. Ran good for a few days now its back bad mis while idle with the a/c on. Misses less with the a/c off. can you helpme?

Yes. The computer has no idea where any of the pistons are so it doesn't know when to spray an injector or fire a plug.

O2 sensors won't make misfires they only monitor air in the emissions if you have a random misfire it's most likely gonna be your coil pack or a cam pos sensor the cam sensor detects the location of the cam and tell the pcm and it tells the coil to fire your are getting O2 codes cause it detects unburned fuel it the exhaust

Easy! The DIS module has failed...!

The Stratus 2.4L engine uses what is called "a wasted spark" ignition system, that feeds two cylinders with the same ignition coil. Havind a pair of Cylinders dead means one of the coils or the module is inoperative. Amclaussen.

repalce coil pack cly 2/4 share the same coil

if it is a random cyl. miss fire then a tune up would fix thuis prob. if it is just one cyl. you might have a bad coil or injector in this cyl.

You still have random misfires (PO300)
You most likely replaced those coils that set a code, and those were not the one bad offender,spiking the computer module.
Take a new coil and put in a cylinder,no change, replace old coil and move new one to next cylinder. You can do that once or twice a day, if you have nothing else to do. You need a 90 degree day, to really get that solved,unless you have an ignition oscilloscope.
Never had a bad spark plug in 45 years.

The DTC (Data Trouble Code) P0305 is the generic OBD-II DTC for "Cylinder 5 Mis-fire Detected", and it means that the OBD-II control unit has detected a problem with the #5 cylinder.

The problem could be a faulty spark plug, or a spark plug wire for the #5 cylinder, or the coil for that cylinder could be faulty (2.7 liter), or the distributor or distributor cap could be faulty (3.0 liter), or the fuel injector for the #5 cylinder could be faulty.

Before you look for any electrical problems causing the mis-fire on the #5 cylinder, first do a compression check to be certain that the mis-fire is not caused by a mechanical problem.

Here are the firing order diagrams for the 2.7 and the 3.0 liter enginesto help assist you.


2.7 liter



3.0 liter

2004 Dodge Stratus Sedan
2.7 liter DOHC V-6 VIN "R"

Multiple miss-fire and miss-fire on #5. I would first change the sparkplugs then replace the distributor cap and rotor. There is a good chance this will fix the problem, but no guarentees.

Hi..my name is Keith..and if your Dodge was running just fine until you gassed up..and then after..you had alot of misfires..i would suspect that here was water in the fuel that you put in from the gas station..it happens.and i would go to the autoparts store and buy a fuel additive that will let the water be consumed..i hope this will help you..if not please write back