Skip the auto shop - Our mechanics make house calls

Q: Have a Ford Expedition and the coils packso keep going out

asked by on

Running bad and I have replaced the same coils twice

My car has 23000 miles.
My car has an automatic transmission.

A: Hey there. This is a known issue with the F...

Hey there. This is a known issue with the Ford Expedition, and is often times related to a spark plug problem. There is a gap between the core of the spark plug and the electrode on the end of it. This creates a spark which is what lights the fuel charge in the engine, which causes it to run. When this gap is too large, this can cause the coil pack to fail due to an excessive amount of voltage being put through it. I would suggest having an expert from YourMechanic come to your home to check all of the spark plugs and determine if they are gapped correctly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: When put in reverse, it loses all power

Hi, thanks for writing in. It sounds as though you probably have an electrical short somewhere. It will probably be in an area where the shifter linkage is coming into contact with the wiring when it is put into this...

Q: Timing and cam phaser

Hi there. Assuming, the cam phaser/timing chain component repair was properly performed. The rough idle within two hours of picking up the vehicle may be, something has come loose (ie; a vacuum line). The repair facility should be willing to...

Q: How much would a spark plug change be for a 4.6l 99 expedition? And should I change coils too?

Billing question was sent to CS for the cost to replace the spark plugs and the ignition coils on a 1999 Ford Expedition with a V8-4.6L engine.

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.