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Discussion Starter #1
My 08 9-3 2.0 was bucking under load,so I replaced the plugs, the coil packs, I bought good ones fromautozone($400) total.Now it runs great but once it’s warmed up it idles rough& stutters badly & feels low on power.Idk what to do or where to look
 

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If they are Autozone Duralast and look exactly like the pic in the coil sticky thread then that isn't it. Running great until warm points towards ECU going bad.
 
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