Truck stuttering!!!!!

[Slick773]

So my 07 EB has 130k, had it for 6 months. Did all major services like flush and change all fluids. I changed front 4 plugs. But having a stuttering problem on fast accelerations. Works fine under normal accelerations Took it to dealer and they told me I had water in my air box ... So I had to change mas airflow sensor. They checked for leaks and could not find anything.. But I still have stutter problem not as bad but still especially when I try to pass someone ... Please help

 

[svfetter]

I would have them look for a bad coil if they have not already

 

[01yellerCobra]

Why did you only change 4 plugs?

 

[jimb726]

Its almost certainly going to be either a bad coil, plug or both. If you changed 4 plugs (presumably the easy front ones), then the other 4 need replacement as well, especially if they were originals. I have replaced many sets of these plugs at or above 100K and I have yet to see a single plug that I would consider even marginal compared to the new ones. When they say these are 100K plugs, they mean it.

 

[skidog]

i have the same problem with mine from the day i bought it. i had the plugs changed out and the cop's changed as well and still does the same thing your saying. the only thing i havent changed is the cats.. that is what im going to change next as soon as i can aford to buy them being there not cheap by any means..

 

[01yellerCobra]

Did they change the fuel filter?

 

[Slick773]

No did not change fuel filter, only changed 4 plugs cause I did some detailing in trade. I will look into changing fuel filter..

 

[01yellerCobra]

Do that with the rest of the plugs. That will probably help a lot.

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[Slick773]

Will do ASAP!!!!

 

[Slick773]

Well truck is in shop now to change fuel filter, brakes and oil change. Will keep you guys updated