Mechanics

MERCURY SABLE COIL PACK PROBLEM

2001 Mercury Sable • 145,000 miles

I have a miss on cyl 3 under a load around 1700 rpm. I have changed plugs wires coil and injector. Have good fuel pressure and good compression.
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Scootet9146
November 27, 2012.




What plugs did you use?

Racefan966
Nov 27, 2012.
O e motor craft

Tiny
Scootet9146
Nov 27, 2012.
Ok good. Did you check for any vacuum leaks around the intake once it starts missing? Is the engine light on and giving codes? What are all the codes?

Racefan966
Nov 27, 2012.
Only code is cyl 3 misfire. Checked for air leaks with carb cleaner and used a smoke machine. No signs of air leak. Even replaced intake gaskets just to make sure. Cleaned mass air flow as well.
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Tiny
Scootet9146
Nov 27, 2012.
Just to be sure you replaced the coil, the plugs, and injector on that cylinder? Did you use anti seaze on the plugs? If so you may have used just a touch to much and that plug isn't grounding. Now depending on which 3.0 you have (ohv or dohc) depends on what you have for ignition so do you have a coil pack and plug wires or a coil on each cylinder? Either way what I would like you to do is if you have plug wires move # 3 with another wire to see if the miss moves with it if you have coils then move the coil. If that the miss don't move then move the plug. If that don't move the miss then I would like you to ohm the injector and give me the reading ok.

Racefan966
Nov 29, 2012.

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