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Old 09-02-2006, 16:18   #1 (permalink)
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Question 2006 F150 5.4 engine missing while accelerating?

Hello to all,
I am a NooBee to your forum. I did perform a search relating to my new thread and found a few topics that related but still no real answer.

Here goes: I have an 06 F150 Supercrew 4x4 5.4. When I reached 1762 miles the truck started to miss and back fire when accelerating. Went to dealer and they keep it four days. I picked it up and when leaving dealership(1/2 mile away I noticed the same problem)I accelerated from a stop light and my truck started missing and as the rpm's got higher it started back firing.... NO change from when I took it in. I turned around and took it back. This time they keep my truck five days. I went to pick it up and expressed my concerns... I was told it is fixed, and was told a service adviser actually drove it home and back the next day to ensure there no were NO problems. I left the dealership... and accelerated and @ 2500 rpms the truck started missing(No back firing this time)I continued to drive my truck home and the missing continued. I called the dealership(47 miles from my residence) and explained to them that the truck is better(no back firing) but still misses when accelerating and acutally seems to bog down when I accelerate. I took the truck back(1878 miles) the dealer keep it three days. I was told they changed ALL plugs and Coil packs per FORD TSB. I picked it up... and the same crap!! Still missing under acceleration. I called the dealer back and was told to "run a few tanks of fuel through it" I now have 3342 miles on it and it is still missing under lite acceleration and seems to be bogging down... also my fuel mileage has drop to 12.8 as shown on the digital gauge from a high of 15.1, The odd thing is sometimes the truck will run great! but not for very long maybe a mile or so then back to missing and sluggish. It never runs good consistently. I called the dealer and it is going back Monday 9/4/06. I apologize for being long winded...Any and ALL replies are welcome. PLEASE HELP. A loyal FORD guy.

*** I have posted this on other forums and I'm hoping someone knows what's wrong with my NEW truck****
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Old 09-27-2006, 16:07   #2 (permalink)
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Re: 2006 F150 5.4 engine missing while accelerating?

did you or they try to replace the ect sensor/or the tps??
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Old 09-30-2006, 21:59   #3 (permalink)
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Re: 2006 F150 5.4 engine missing while accelerating?

Some of those had an injector problem. Do you smell raw gas from the exhaust? I have seen these injectors stick "open" and cause a random missfire and poor accelleration.
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Old 04-10-2008, 13:58   #4 (permalink)
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Re: 2006 F150 5.4 engine missing while accelerating?

you're not alone! my 06 has the same problem.
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Old 04-10-2008, 19:46   #5 (permalink)
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Re: 2006 F150 5.4 engine missing while accelerating?

You should get the codes pulled ASAP to pinpoint cylinder miss. I would also call Ford Corporate before you end up running out of Warranty and have to dip into your pocket!

I have heard of people getting replacement cars at some point if problem cant get resolved!



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Old 04-10-2008, 19:51   #6 (permalink)
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Re: 2006 F150 5.4 engine missing while accelerating?

Watch that missing engine. I have a Forf F150 that was missing at higher rpms and was smelling of fuel. It has 41,000 miles. It turns out it was a faulty injector wich resulted in a bent rod and scored cylinder. Here is the really bad part!! I purchased this truck 10 months ago with 19,000 miles on it as a certified used car. So it came with the extended drive train warranty. Ford's waranty dpartment has decided that yes the engine is part of the drive train, but injectors are not and since it was a faulty injector that caused the problem, they are not covering this $3500.00 reapair.


So better watch those injectors!!!

If anyone has any ideas for me, I would love to hear them!!!
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Old 04-14-2008, 16:57   #7 (permalink)
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Question Re: 2006 F150 5.4 engine missing while accelerating?

The dealer has my truck, they've replaced the injectors, then put the old ones back.Tried the fuel filter, fuel pump, all the sensors. Now they're replacing the plugs ( which may be seized in the heads ) I hope it works.
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