help.....

[Serge]

Hesitation under hard acceleration when i drive the car run normal idle normal only when im driving and push it to pass or floor it it hesitate..
i change the spark plug and fuel pump and fuel filter. still hesitate at WOT.

Any clue what could it be

 

[Blkkbgt]

Any codes? Sounds like a misfire.

 

[Serge]

was a bad coil pack after i change a new fuel pump and fuel filter, spark plug, gas rail, then got some ford oem coil pack and car run like new.