Ford Expedition check engine light when accelerating.


Asked by Mar 19, 2017 at 02:20 PM about the 2007 Ford Expedition EL Limited

Question type: Maintenance & Repair

I have a 2007 expedition and every time we step on
the gas the check engine light comes on. It doesn't
if we speed up gradually but it does if we have to
step on it hard to merge on highway. Also when
turned on in makes a weird noise that I've looked
into and it might be the timing. Any other

5 Answers


May be time for a tune-up. The flashing check engine light means there is a cylinder miss fire. Possible causes; Faulty spark plug (s), Faulty ignition coil (s), Clogged or faulty fuel injector (s), Intake air leak, Fuel injectors harness is open or shorted, Fuel Injectors circuit poor electrical connection, Ignition coils harness is open or shorted, Ignition coils circuit poor electrical connection, Insufficient cylinders compression, Incorrect fuel pressure.

3 of 3 people found this helpful.

In my experience this is either a bad coil or a bad spark plug.


Try to describe the weird noise.


The noise sounds like the engine vibrating like the whole truck shakes. I really don't know how else to describe it. But once I drive it then park then turn it in on again it doesn't do it any more

Be careful changeing spark plugs. I have a 2008 ford exspedition king ranch. Every plug broke dureing removal. Special tool needed to get out plugs. These suvs along with other fords with 3 valve 5.4 liter engines are known for this

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