2008 Turbo-X Engine Knock Diagnosis? - Saab 9-3SS Bulletin Board - Saabnet.com
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2008 Turbo-X Engine Knock Diagnosis?
Posted by Dave Chicago [Email] (more from Dave Chicago) on Sun, 30 Jun 2013 11:02:35
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Recurring engine knock/CEL problem. Two new ignition coils (two separate occurrences) because those cylinders identified by Tech2. Also noticed low fuel mileage.
Floored it exiting a toll booth. Engine knock & CEL.
Now shows general misfire code and also Fuel Pressure Regulator code. Absent a replaceable FPR (familiar with FPR on 900) diagnosis is that the whole fuel pump assembly needs to be replaced. It looks like it includes FPR. Sound right? I could imagine low pressure->lean mixture->engine knock.
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