4080wrx

iTrader: (38)

I had the CEL read and it is P0302 which is a detected misfire on cylinder #2. I have already replaced the spark plugs and tested and inspected the plug wires. I am suspecting that the main coil pack is bad but do not want to shell out $200 at this time in the event that is not the problem. My question is there anything else anyone can think of before I dive into replacing the coil pack?

Car info:
2001 Impreza 2.5RS (coupe)
Ganz Intake
axle back exhaust

4080wrx

iTrader: (38)

wow no responses.......


well i ended up shelling out the 140 for a new coil pack and the car still shoots out a CEL. well back to the drawing board

808subaru

iTrader: (16)

Jess, what are your plugs gapped at? the wrong gapping could result in misfire i've been told.

chochocho

iTrader: (38)

try cleaning the injectors using seafoam and use fuel injection cleaner for your gas tank

no other mods, right?

4080wrx

iTrader: (38)

well check the gap on the plugs and they were within tolerance according to the service manual. unfortunately the problem still exist.....but I did learn something. it turns out the the CEL only come on when i run the air conditioner, it seems like when the ac compressor kicks on it adds an extra load and the car feels and sounds like its stumbling. i think this is where and when the miss fire happens.

now with the ac off i can still feel a subtle stumble on the engine but no CEL comes on for a miss fire.

any thoughts

Jess

4080wrx

iTrader: (38)

problem solved................Thanks Shaggy!!

dub81

iTrader: (39)

So what was the solution to the problem Jess?? Im curious..

thanks
walter