2004 Mercury Sable ENGINE RUNS ROUGH

2004 MERCURY SABLE
120,000 MILES • 6 CYL • FWD • AUTOMATIC
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SSJRSMITH1
  • MEMBER
  • 1 POST
WAS TOLD CYCLINDER 2 MISSING,REPLACED IGNITION COIL,SPARK PLUGS & WIRES.REPLACED FUEL INJECTORS FOR CYCLINDER 1,2, &3.RE-SCANNED.NOW SHOWS CODE PO300,PO302,PO306,&PO316.PLEASE HELP DOWN TO MY LAST END.
Apr 9, 2010 at 6:29 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
HAve you checked the fuel pump pressure? Also, I'm sure you realize the codes, random misfire, cyl 2... However, regarding the po316, I have found cases of the coil being bad and causing the rough idle, and a bad connection on the B+ wire at the coil. Check that and let me know what you find. Also, you may need to do a compression test to determine if there is a burnt valve...

Let me know what you find.
Joe
Apr 10, 2010 at 11:50 PM
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