Focus Fanatics - View Single Post - CEL codes P0172 and P0325
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Old 10-17-2012, 09:43 PM   #2
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Join Date: Nov 2005
Fan#: 29645
Location: Hendersonville, TN
What I Drive: 2003 Pitch Black ZX5 SVT

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Hi Steve! you need to check to see if you have a vacuum leak in and around the engine. having a vacuum leak will cause P0172 and possibly the spark knock on accel. hope that helps.
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