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ford escape: very rough idle and once in drive the engine is very weak…

Customer Question
my ford escape is reading...
my ford escape is reading code p306 when i go to start it when the engine is cold it will start but has a very rough idle and once in drive the engine is very weak
Submitted: 8 years ago.Category: Ford
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Answered in 6 minutes by:
6/25/2010
Ford Mechanic: CTFordTech, Ford Technician replied 8 years ago
CTFordTech
CTFordTech, Ford Technician
Category: Ford
Satisfied Customers: 4,981
Experience: Ford Master School Certified, Kia Elite School Certified, ASE Certified, A/C 609 Certified
Verified

Hello and Thank you for choosing Just Answer.

 

Typically a P0306 code is due to a Ignition Coil that is becoming weak. What recommend doing since you probably do not have the proper equipment to test the vehicle is clear the code and swap the number 6 coil with another one on the motor and drive the vehicle. When the light comes back on see if the cylinder misfire has changed, If so, you know the coil is bad. # XXXXX is on the front of the motor, last one to the right or drivers side. (Cylinders 4, 5, and 6 are on the front of the motor).

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Customer reply replied 8 years ago
we swap the coils 5 and 6 and now is p0306 and p0305
Ford Mechanic: CTFordTech, Ford Technician replied 8 years ago
If the misfire changed when you swapped the coils, I suspect a bad coil and recommend replacing the ignition coil with a new one.
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Customer reply replied 8 years ago
ok do i need to replace #5 and # XXXXX now because the mis fire was just on # XXXXX and now is on #5 and # XXXXX after i swap the coils
Ford Mechanic: CTFordTech, Ford Technician replied 8 years ago
No, You can either just replace #5 since you moved 6 too 5 or you can move the bad coil back to #6 and replace #6. At this time you will only need to replace one coil.
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Ford Mechanic: CTFordTech, Ford Technician replied 8 years ago
Please accept when you are fully satisfied
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