solidace46

Hey guys I was driving today(2002 wrx) and I recognized my check engine light was on, I got a diagnostics check right away for free at autozone. The code that came up was P0301, which means cylinder number 1 is misfiring. Symptoms I am experiencing are low idle, and a slight spudder when i push the clutch in when i am around 3,000 rpm's or higher.
The probable causes to that could be:
1) Ignition System Fault- spark plugs, wires, coil
2) Vacuum leak
3) Injector Faults
4) High or Low Fuel pressure
Has anyone experienced these problems or can anyone give me some advice on what I should do? Most likely tomorrow morning I am going to the Subaru dealership and am going to have them run a full diagnostics check and find out exactly what is wrong, hopefully it is only plugs and wires but I guess it could be anything... any input helps, thanks.

AngrySubyWagon

iTrader: (9)

more than likely its 1 or 2. check for boost leaks first. If all is secure and you're positive. check your spark plugs. post what happens.

Cp3aight

iTrader: (2)

Spark plugs are a great indicator of whats going on inside your cylinder. Check #1 and compare to others and see the difference, that should help you.

solidace46

I've been driving with the check engine light on for a few days now, its going to the dealer on tuesday for a tune up, and hopefully the new spark plugs will fix that problem because i heard subies eat them up cause they run so lean... not sure if its true but it makes sense. Anyways today i was driving and the light either blinked at me or turned off and back on for a second, that kinda worried me but Im gettin it fixed soon. I'll post back up when i get the results, thanks for the reply

mistaanime

iTrader: (12)

How long have you had your car? did you get the 60k done? because thats when the the spark plugs are usually replaced.

solidace46

got new plugs...turned off the check engine light, that dept. is good now. but the turbo feels really weak from 5k-7k rpms, but from 3k-5k rpm's it pulls hard. For some reason it kinda gets shaky after i get up to 80, hate noticing these problems. The dealership said they noticed it was runnin a little lean, and they checked out my intercooler and said there was a little oil in it, which means my turbo might be ****ed up. ****ty, bought it like a month ago, but I guess im gettin to know my car...

BXR_PWR

I got that same code. My car acted the same maybe worse. but my mechanic found it was a pin loose inside one of the connections the coil.