this the first time this happened! I got a code of: p0301, p0303 and p0304

2006 WRX Stage 2 map
invidia catted DP
HKS hi-power catback

p0301 (cylinder 1 misfire)
p0303 (cylinder 3 misfire)
p0304 (cylinder 4 misfire)

wen the motor is cold, trying to warm up wen i press on the gas for a just a bit, it stutters. then the check light when on!

CAN ANYBODY HELP OR SUGGEST ON WAT SHOULD I DO? THANKS GUYS!

 

anybody?

 

How is the car running now?
I just threw a P0301, P0303 and a ????? CEL (according to a friend's COBB Accessport).

Similar circumstances to yours.

I reset the ECU, to clear the codes. IF they come back then I'll have to get it looked at.
But I am thinking it was a random missfire. Cold car, plus lighened flywheel are my thoughts on my CEL.

If you are really worried about it take it into the dealer. Otherwise I would just reset the ECU and drive it on the "normal" side for a day or two to see if the CEL comes back on.

 

i just reset the ecu also, now it runs fine...(car runs slow now) ill see wat happen for a couple of days and see if it comes back on. wen the motor is cold and trying to warm up, wen i press the gas for a bit (maybe like under 2k RPM) the car makes this rumble..stuttering the motor), NOW this is only wen the motor is cold, wen its warm its fine!

Does your do that? i prolly have a bad coil packs.

 

No, mine doesn't do that. My car had clutch judder, but that is when you are engaging/disengaging the clutch. So definately not what you are experiencing (also I haven't heard of the 06's having this problem).

You might want to get that looked into.

 

I had codes po301 and po303 a few weeks ago. I called my buddy that works at subaru and he ran the codes and told me that its nothing to worry about Just a misfire code, I dunno about the p0304.... Didn't get that one. Let me know if you need anymore help -thekid925

 

oh cool right on! imma go ahead and check it again. if it comes back on, should i head up to the dealer? i dont want to take off my mods tho.