Ecoboost f150 misfire 4,5,6 !

[silverfoxclaim]

Thank you guys, for going through all this trouble l appreciate all your effect,and being patient with me!

l will let you no how it goes
Thank you very much !

[silverfoxclaim]

Better, but still does it wet or dry weather !

[sohfast94]

No problem sir! Glad we could help

[silverfoxclaim]

Now is that going too still be a problem
With the other Diablo tunes ?

[silverfoxclaim]

Po300
Po304
Po306
Truck did it today happened at 3/4
Throttle seems ok at full ,
Misty rain a bit ,but for the most part
a lot better then before !

[sohfast94]

This thing have a tendency to do this in the rain? If so needs intercooler TSB...

[silverfoxclaim]

Like I said ford won't do anything without codes
Truck runs fine stock ,but with a tune & wet weather it doesn't ,which is hard on the converter when this happens ! Last one was
Warr , next one might be out of my pocket !

[silverfoxclaim]

Did it a couple times now in dry warm weather
# 4 misfire ,etc ,maybe this truck doesn't like tunes
Is my conclusion which is sad ,is diffinatly
Something in the tune making it misfire cause
it has never did it yet without a tune !,but regardless Ford will never
Fix it cause too them there is no problem,and with a tune there is and
my warr is void with a tune ! No evidence ! Other wise ! Unfortunately
For me I'm stuck with this truck for a while
and I do here you on the tsb but they won't give me that one which I'm
Sure would fix it so I'm stuck with the old tsb
Fix which doesn't make me too happy with Ford ! Is it my fault that I cannot
Take advantage of the intune ? simple modification of stock tune,you would think
It would be ok,maybe it's the extra torq and hp,puts it over the edge !

[sohfast94]

mmmm something else has to be going on here. get me the last tune written from the tool. It has to be the last tune written and post it.

[silverfoxclaim]

You wrote the last tune back a ways in post
Still there ,silverfox ,I didn't change anything
Bin running that one ,I'm running original
Now,here is last written

[sohfast94]

Give this a shot.

[silverfoxclaim]

loaded it and driving easy seems pretty nice so far ,
Haven't walked on it yet ,shifts nice and
Good response at little throttle,I'm impressed but lll give it a month
Thanks for helping me out ! I'll let you no how it goes

[Snappa0126]

I have a 2015 Ford Explorer Sport with the 3.5 ecoboost. I have the 87 Octane Tune installed. I also have K&N air filter and catch can installed.

I was driving back from OKC to Tulsa in a hard rain and I punched it... Instantly the CEL came on and I lost power. I had the same misfires and engine codes.

I pulled over at the next rest area and re-installed the factory tune. I then removed all the error codes and finished my drive back to Tulsa.

In the morning. I updated my tuner and installed the fuel economy tune. I am going to run that for a month.

I really loved the 87 Octane tune until I got the misfire problem.

R/
Marty
aka
Snappa0126

[mikel]

there is a dealer fix (TSB) for this issue:
http://www.f150forum.com/f70/there-fix- ... /index185/

Thanks

[silverfoxclaim]

This is for so fast ,well last tune u did
Seems not too throw a code anymore
But it's the 87 tune and I run 91 oct
When u punch it ,pings like crazy around that
Med rpm is that lack of fuel ?,I might try
94 Oct and see if it's better ,it might be
That 91 shell I put in one time ,but still
Shouldnt ping that much ,what u think ?