P0301 code & CEL, but running fine

[bennyx_o]

Evening. Bit of an intermittent issue with my GTI.

The CEL has been coming on randomly for a couple of months now, with no adverse effect in running except one occasion; I was coming up to a set of lights that were changing, so I accelerated to try make them. The car hesitated, CEL started flashing and car started running rough with a slight smell if petrol. Limped the car home and left it overnight. When I started it the next morning, it started and ran fine, and has done ever since. The CEL cleared itself also.

I had the car in for an oil service today and had the PCV &  can follower replaced also. When the car was scanned it showed P0300 & P0301. (Random  cylinder misfire and Cylinder 1 misfire)

Coilpacks were replaced under warranty in Jan 14. Don't think it's coilpack because it's so intermittent, but cupid he wrong (it's happened before! :D) Mechanic thinks injector could need replaced, and I'm thinking the same thing too.

Anyone here ever have anything similar happen? Is it possible that it could be the coilpack?

Cheers

[boardyuk]

I have just had the same issue on mine. I had random misfires on 2 cylinders about 2 weeks after a full service and new plugs installed. Had to limp it home which was a PITA on dual carriageways with virtually no power 

I pulled all the coil packs to have a look and 2 were in shocking condition but 2 seemed fine which explained the 2 random misfires, swapped the packs to the other cylinders and the misfires moved too. I replaced them all with new Bosche ones just to be certain they were all good, not had a problem since.

[bennyx_o]

Sounds promising. I was looking at upgrading the coils anyway,  so may try that first. Cheaper than injectors too :D