Ford F150 Forum - Community of Ford Truck Fans
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Ford F150 Forum - Community of Ford Truck Fans (https://www.f150forum.com/)
-   General F150 Discussion (https://www.f150forum.com/f2/)
-   -   stutter (https://www.f150forum.com/f2/stutter-384380/)

v8_STX 06-22-2017 09:53 AM
Originally Posted by madelay (Post 5363543)
STX- Thanks. Love to see if any of this could be the mystery bug. I'll update as we make progress
Best of luck. These things can be either very simple but not obvious or something more serious. Hopefully, you can find it soon!

madelay 07-05-2017 03:15 PM
Stutter/Studder FIXED

First, THANK YOU to all who replied/helped.
As noted, we changed the plugs/coils/boots & the stutter remained. Acckk.
I gave-in & took it to Ford for diagnostic. They discovered one of the NEW plugs we installed was cracked. Replaced it & all is well. This is the ONLY time I've ever taken a vehicle to the dealer & got out for $200. ;)

Oddity is that the stutter was the same before we changed the plugs & after, so I'm assuming one of the original plugs/coils was bad.

I'd have never taken the NEW plugs back out to re-re-check, so I'm grateful Ford had the software to diagnose the missing cylinder.

I appreciate all your guidance

v8_STX 07-05-2017 03:23 PM
Originally Posted by madelay (Post 5379123)
Stutter/Studder FIXED

First, THANK YOU to all who replied/helped.
As noted, we changed the plugs/coils/boots & the stutter remained. Acckk.
I gave-in & took it to Ford for diagnostic. They discovered one of the NEW plugs we installed was cracked. Replaced it & all is well.
Wow! A new plug had cracked... wow. It's good that Ford was able to find and fix that one for you .. and also good that this wasn't a fuel or fuel delivery issue. Nice work getting that done!


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