I have a 2007 Chrysler 300 with a 2.7L V6. Three days ago I started my car and it was idiling very rough and immediately threw a code. I put it in drive to see if it got worse and it did. I plugged my OBDII reader in and a cylinder 4 injector code came up. I cleared it, I was on 1/4 tank so I added some injector cleaner and filled up my tank. (Premium) then the next day on my second start of the day the same thing happened but it threw a #4 injector circuit code. I cleared it. Yesterday on my 4th start it started acting up again and threw a P0304 so cyl. 4 misfire and a fuel injector code then after 5 minutes of driving I pulled into a parking spot and my car died. So could I have oil sludge causing low oil pressure making my car die and the sludge also making it misfire? But why would it only affect one cylinder? There's no starting trouble, knocking or running hot. Should I check my upstream O2 sensor? I know I need to replace my coils because it's just that time so is it a good idea to swap companion cylinder coils and see if they're actually misfiring or put a multimeter and test the primary and secondary? I replaced my spark plugs about 700 miles ago (Champion Platinum). Oil changed two days ago (synthetic blend- never used full syn. So there's been no going back and forth). Mainly, I just don't understand that even if it was just an injector/coil combo why would one dead cylinder make my engine loose all power and not just run off 5? Sorry for the paragraph I'm just a hypercondriac when it comes to my car. Any and all help is greatly appreciated.
have the same problem?
Saturday, September 20th, 2014 AT 9:02 PM