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Old 09-28-2012, 10:17 AM   #32
conklin_02
Scooby Newbie
 
Member#: 324190
Join Date: Jun 2012
Chapter/Region: NESIC
Location: Southwick, MA
Vehicle:
2005 wrx STi
PSM

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Probably a bad coil pack is my guess. I recently had a similar problem. At WOT it was hesitating over 5k. I replaced my maf and fuel filter, my afr readings went back to normal, but still hesitating. Bought 4 new coils, it fixed it. Also, check your connections. Maybe a bad wire. I replaced mine because they have never been replaced
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