Explorer 4.6 V8 ... Stuttering/jerking on acceleration

[TJ378]

When accelerating my V8 2002 Explorer stutters like there is a fuel supply problem. I don't believe it is a diff or transmission issue as it doesn't happen all the time ... only when stepping on the gas. Has anyone else had this problem and more importantly, fixed the problem.

 

[drdoom]

Is the check engine light on?

 

[drdoom]

When is the last time the fuel filter was replaced?

 

[TJ378]

Response

The "Check Engine Light" was on and Ford replaced the EGR valve and it is now off ... but the surging continues. Whilst the car was with Ford I asked them to check the fuel pump and filter and they stated they were both good. I am not convinced they examined them properly as it does feel like a fuel supply issue.

 

[96eb96]

misfires cause that symptom on this engine. check for any coolant leaking into the plug wells.Very common to have an intake manifold leak.


Second could be a dirty MAF sensor, lots of info online. A scan tool can give clues, but just go ahead and clean it. Usually the problem is on acceleration. No codes will be set until it gets really bad.

 

[TJ378]

thank you

thanks for the guidance 96eb96. I will talk to my mechanic and have this checked. might change the MAF Sensor just for the hell of it. will post once mechanic has looked and hopefully resolved.