interesting try this:

http://www.subaruparts.com/cart/?pn=22433AA480

the link for the WRx one it shows the same price but different part.

http://www.subaruparts.com/cart/?pn=22433AA421+&submit.x=17&submit.y=2

I just ordered one total with shipping about $85.


Nick


I was searching and found this, but which on is the STI part. I am having the same idle trouble did compression test all cyl were with in 3-4 psi of each other right around 120. I think my coil pack went bad but I need help in which one I should buy, and exactly how can I "track down" which coil went bad.
I had the code pulled and 1-4 were all mis firing do I replace all of them or do a leak down test.
Dustin
or is the motor done with.

I'd call Subaruparts. They're always very helpful when I call.

I'd see if you couldn't do a search on here or maybe PM some of the really suby-smart dudes on here and see if you couldn't figure out a way to test each coilpack individuallly. They're just attached to the harness by an electrical connector.

your right and i just swaped my plugs out and it wasnt as hard as i thought

is 120 comp in accaptable limits?

I had this problem and what I did, if you have a code scanner, was clear the codes. Then go for a drive and the second your CEL comes on, try to pull over and monitor which code comes up first. (P0301 - P0304) Clear it again and repeat the process. Maybe I just got lucky - but for me, even though all 4 codes always popped up, my #3 always came up first. I replaced that coil pack and everything worked well from then on out. Just my experience.

If you haven't gathered the info yet, here's a post about others' compression test results. Sounds like you're ok.

http://forums.nasioc.com/forums/showthread.php?t=679167&highlight=compression+test