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Have you replaced the coil pack yet? This is a very common concern for the coil pack to go bad and cause a misfire on cyl #2.
no that was my next ?
i u plug wire and it fires at number 2
Is it a stron blue spark?
Is it a strong blue spark?
not really blue more yellow
Then replace the coil pack.
You should get a very strong blue spark, if it is a yellow spark, it is to weak to fire under compression.
For some reason when the coil pack goes bad it is always cylinder # XXXXX
the car runs great when put foot on pedal but idle in gear it idels rough
ok so when the coil pack goes out it always gives code P0302
Another possibility is low compression in that cylinder. If it idles rough and smooths out when you rev the engine up this could be from low compression in cyl#2. I would preform a compression test first on all the cylinders and compare them to cyl#2 before replacing the coil pack.
Usually when the coil pack goes bad I have noticed it gives a p0302. But you also may have a compression concern in that cylinder.
ok but it happen just all at once not over period of time
That is the way it goes a lot of times it just goes bad. Preform compression test first if ok replace the coil pack.