Coil problems

Coil: Electrical device that creates the sparks that can be seen in spark plugs.
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Engine chokes, constant failure

Ford Fiesta 2005  262000 miles
Good morning all. My car is a Fiesta power 2005 and, for 6 months now, it has been presenting a huge failure, that started by appearing occasionally but is now quite frequent. It seems to be a spark plugs' failure but it is not. When starting the engine there is no problem, but after a while, the car starts failing, it loses power, chokes and I need to accelerate it so that it sets out and be careful because it suddenly speeds up. The engine trembles terribly and, if the air conditioning is turned on, it is even worse because it is ever more powerless and almost stalls, even though this has ne… Read complete
DEL from United States 9 years ago  
DE
2 replies 
wilfred from United States 9 years ago
Good morning, the same thing happened to my Fiesta power 2005. It had all the symptoms you mentioned and even the engine trembled as well when the radio was turned on. After changing all the car parts like you did, I checked the computer and it was damged. I first tried repairing it, but the failure persisted. So I replaced by a new one and the problem was solved. You should check the wire that goes from the positive terminal to the relays that are on the battery's plastic box, as this was the wire that damaged the computer in my case because it was loose and, due to a constant bad contact, it damaged on its inside. I suggest you to take your computer to be checked, as every time I scanned it, a coil failure was indicated, but it turned out being that the computer did not send the electrical current to two of the injectors and that is why two cylinders stopped working. Hope it helps.
ignatzio from United States 9 years ago
Your fuel filter must be dirty, you need to change it. If this is not the case, then your deposit might be full of impurities, which might have reached the engine.
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