po336 help

AJ500

New member
May 25, 2010
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The other day my truck started making a loud almost chatter like sound at idle, then threw the cel po336 crank shaft position sensor code,
Only at idle does it sound like a powerstroke, its really loud, and when you turn the key off it almost sounds like it diesels, like its still dumping fuel and wants to continue to run... Any ideas on where to start? :confused: fuel filter was recently changed. Any feedback is appreciated