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Old October 13th, 2008, 08:25 AM   #1
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Exclamation F250 5.4 liter hesitation and chugging

Seems to happen randomly at take off and while cruising on the freeway. Almost seems as if it is misfiring. No codes. I dunno. I am new to the ford stuff. I am about ready to drop off at a stealership to have them diagnose it. Halp
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Old October 13th, 2008, 08:31 AM   #2
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Does it almost feel like the trans is slipping? You give it gas, it revs up but won't accelerate?

Is it idling rough or starting to run rough while driving?
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Old October 13th, 2008, 08:37 AM   #3
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gawd I hope not, but my dodge did what you described and it was pretty obvious. The f250 doesn't seem that way. Idle is fine at start up and acceleration. It gits up and goes on the freeway for a f250. However it literally hesitates and chugs randomly, but at least once per day of driving it.
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Old October 13th, 2008, 08:40 AM   #4
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there might be codes, even without a Check engine light... I woudl try an autozone or the like, and have them try to pull codes.
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Old October 13th, 2008, 08:41 AM   #5
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pm swi dog on here, his 5.4 is doing exactly the same thing....I think he said it was leaking coolant into one of the holes where the spark plug is and is causing that one cylinder to misfire/short out every once in a while.
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Old October 13th, 2008, 08:41 AM   #6
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Quote:
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gawd I hope not, but my dodge did what you described and it was pretty obvious. The f250 doesn't seem that way. Idle is fine at start up and acceleration. It gits up and goes on the freeway for a f250. However it literally hesitates and chugs randomly, but at least once per day of driving it.
When it chugs, if you give it more throttle, nothing happens?

I'm thinking TPS, but it could also be misfiring which can set inactive codes which won't set a light. Until the PCM sees it almost all the time or it happens enough, it won't set the check engine light on.
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Old October 13th, 2008, 09:06 AM   #7
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bad coil(s)

now all you have to do is find out what one it is.

i keep a bunch of spares for testing purposes.
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Old October 13th, 2008, 09:13 AM   #8
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When it chugs, if you give it more throttle, nothing happens?
When I give it more throttle it kind of sputters then clears up. When I keep the throttle on it kind of goes away once I go back to a cruise speed. Eventually it stays gone till it happens again laterish.
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Old October 13th, 2008, 09:15 AM   #9
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When I give it more throttle it kind of sputters then clears up. When I keep the throttle on it kind of goes away once I go back to a cruise speed. Eventually it stays gone till it happens again laterish.
Probably not a TPS then. Intermittent misfire. 04 EDGE and what gotsand? said are definite possibilities.

I would pull all of the plugs and see what all of them look like and compare to each other like girls in the locker room.
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Old October 13th, 2008, 09:27 AM   #10
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I just found this forum of issues about the coil packs......interesting no?

http://www.f150online.com/forums/eng...coil-pack.html
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Old October 13th, 2008, 09:34 AM   #11
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I just found this forum of issues about the coil packs......interesting no?

http://www.f150online.com/forums/eng...coil-pack.html
Could be that as well like Bones said. If you want to self diagnose, make sure all your spark plugs are in good shape and aren't white or have any deposits indicating a coolant leak like 04 EDGE said. If those look ok, get Autozone to pull up codes and see if their are any inactive misfire codes for specific cylinders. Swap a coil pack if you can and get it to do it again, go to Autozone and see if it switches to that cylinder, and then you've found the problem.

Or just take it to the dealer....
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Old October 13th, 2008, 09:38 AM   #12
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Quote:
Originally Posted by GreaseMonkey View Post
Could be that as well like Bones said. If you want to self diagnose, make sure all your spark plugs are in good shape and aren't white or have any deposits indicating a coolant leak like 04 EDGE said. If those look ok, get Autozone to pull up codes and see if their are any inactive misfire codes for specific cylinders. Swap a coil pack if you can and get it to do it again, go to Autozone and see if it switches to that cylinder, and then you've found the problem.

Or just take it to the dealer....
If I can't fix I will have no choice, but to take it to a dealer. Wife will be primarily driving the f250 this winter so I want to eliminate any hiccups.

Thanks for all the help guys.
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Old October 13th, 2008, 09:39 AM   #13
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If I can't fix I will have no choice, but to take it to a dealer. Wife will be primarily driving the f250 this winter so I want to eliminate any hiccups.

Thanks for all the help guys.
Are the coils and plugs in that thing a bitch to get to like the half tons?

On second thought, stop at Autozone and have them pull the code.

Check the plug for that cylinder, and if it's ok, it's probably the coil if you have a misfire code.

Remember that Ford has some asinine way numbering cylinders that is different from Dodge and Chevy.
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Old October 13th, 2008, 10:45 AM   #14
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Check your spark plugs to make sure they aren't backing out of the heads.

Ford has a kit to fix this if it is the issue.
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Old October 13th, 2008, 11:50 AM   #15
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hmmmmm I took a quick look at lunch and couldn't seem to locate the coil pack let alone the spark plugs

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Old October 13th, 2008, 12:00 PM   #16
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hmmmmm I took a quick look at lunch and couldn't seem to locate the coil pack let alone the spark plugs

Isn't there plastic covers over the heads?

What year is your F-250, like an 04 right?
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Old October 13th, 2008, 12:08 PM   #17
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you gotta be careful with the plugs on the 5.4 cause theyll pop out if they back out too far its about a 500 dollar to rethread a mechanic where i work has already rethreaded some of the plug holes on the v-10s there but he told me that when you pull the plugs if they start to give u any trouble coming out to turn them back in a little bit then loosen them again he says as long as hes been doing that hes never had any problems
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Old October 13th, 2008, 12:17 PM   #18
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Quote:
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Isn't there plastic covers over the heads?

What year is your F-250, like an 04 right?
yes 04...no covers that I am aware of. I google a pic and I couldn't find one that looks like my motor
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Old October 13th, 2008, 12:27 PM   #19
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yes 04...no covers that I am aware of. I google a pic and I couldn't find one that looks like my motor
I'm having trouble finding pictures too....

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Old October 13th, 2008, 12:28 PM   #20
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Enter your DL# and look up under engine electrical. The procedure is there.

https://elibrary.mel.org/validate?ur...ch%3Fdb%3DCHLL
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