Xzist

Anyone else got any ideas?

Thanks for info. but would bad plugs cause a missfire only when cold but then be fine once its warmed up? thanks

Thanks for the reply. It seems to do it everyday if it's raining or not. But i will check the vents to make sure. Would coil pack or plug make it miss fire when its cold only though? If would have thought it would randomly do it the whole time. I was a bit confused by the O2 sensor fault as i have a de cat exhaust and didn't think it had an O2 sensor. Is this correct? It's almost like the choke is staying out too long and its not able to burn fuel and chocking out. Any way to test if the choke is on or not? thanks

Didn't mention the engine check light doen't always come on. the fault codes are from the last time it had the problem and the light happened to come on this time. 90% of the time it will have the problem but no lights will show up.

Hey guys! I'm a new owner of a V1 WRX (K Reg import). I have owned the car about two weeks, everything seems pretty good. I have a Subaru Specialist just down the road from me but he's away on holiday for 4 weeks so i can't get him to have a look for me. My problem is when i start my car from cold (the morning for example) i will let it run for 5 mins to warm up; (like I've been told to do) then I'm on my way. After 1/4 mile pretty much at the same point on the road each time on my journey to work it will start to missfire. I don't go taring off and never boost in the first couple of miles. When the missfire happens the engine won't rev i can shift down a gear but the revs still wont rise up and the car just wants to stop. If i pull over and stick it in neutral and let it idle for a bit then gently rev it it will suddenly burst back into life and then will be totally fine for the rest of the drive/day until it has cooled down again. It will do the same after work then on the way home. About a 1/4 of a mile in it will repeat the missfire etc. it never does it any other time only when its cold and within 1/4 mile from the origin. I have run the self diagnostics and it is coming up with faults on the Knock Sensor and the O2 sensor. Any ideas what i should try to fix this issue? Any help would be gratefully received. If there is any info I that would help let me know and i can fill you in.... Cheers guys