2006 s40 2.4li p0303 & p0300

Talamant3z · Post by **Talamant3z** » 12 Jan 2014, 18:32

been trying to see why the car keeps misfiring but getting stump. My s40 sat for 6 months untouched. When we started the car and it ran great for a day or two then the misfire came up. Orginally we got the p0303 so i bought a spark plug cleared the codes and it came up again so i bought a new ignition coil for cylinder 3 cleared the code and it came up again. I tried to move the coil to see if the code was change missfire and it doesn't still reads cylinder 3 and now multiple misfires. does anyone have any suggestions? the car drives fine but at idle its rough also deceleration & acceleration its rough. any suggestions?

gsanders · Post by **gsanders** » 21 Jan 2014, 07:46

I wish I knew the answer to your situation, because I have the same one. I get this message, slow down or shift up, and the car runs poorly, the code was 300 random misfire. I replaced everything I could and now I have a anti skid service required message. I don't know if my latest replacement of an oxygen sensor worked or not because the car is undriveable. If you get any help please let me know.
Thanks for listening, Gary

Raymondm2315 · Post by **Raymondm2315** » 25 Jun 2018, 12:10

I'm also having the same problem did u ever find the cause and any help you can give me would be greatly appreciated