2006 Ford F-150: misfire or rough idle

Filed Jul 13, 2018 · Engine · 150,000 miles · MA

Have a slight misfire and called all my local shops and no shop will change the plugs on a f-150 with a 5.4l triton motor. They said it's well known that all the spark plugs will snap off in the block. I called the dealer and they want $1000 to change them. While in all other cars and trucks it's $50-$100 job. Researching this online it seems this happens to every ford that had the 5.4l triton engine. Why is there no recall? I can't afford $1000 to change my spark plugs. I'm a small business owner and this is beyond my means currently. I emailed ford and they didn't seem to acknowledge it being a known issue. Yet every mechanic shop will and there are thousands of cases of this issue all over the internet.

Filed Jun 23, 2018 · Engine · 200,000 miles · GA

Air conditioning condensation drips down into #4 cylinder causing a misfire

Filed Sep 29, 2017 · Engine · 135,000 miles · HI

Tl* the contact owns a 2006 ford f-150. While driving various speeds, the vehicle started to misfire. The contact noticed carbon build up on the spark plug head, which caused it to cement onto the engine. The vehicle was taken to ford of honolulu (1370 n king st, honolulu, hawaii, 96817, phone number: (808) 824-3981) where it was diagnosed that a "crappy" design was on the spark plug that needed to be replaced. The dealer replaced all four spark plugs, but fractured one of them. The contact was informed that he would have to pay to replace the fractured spark plug. The spark plug was not replaced due to the replacement fee. The manufacturer was contacted and referred the contact to the federal safety agency. The approximate failure mileage was 135,000.

Filed Apr 20, 2017 · Brakes, Engine · 128,000 miles · CA

Tl* the contact owns a 2006 ford f-150. While driving 45 MPH, the front of the vehicle shook violently, the engine nearly stalled and lost power repeatedly, and the check engine indicator illuminated intermittently. The vehicle also braked independently. The vehicle was taken to an uncertified mechanic who diagnosed that the engine was having multiple misfires, and did not know how to repair the vehicle. The contact also called a dealer who was extremely rude and did not assist. The vehicle was not repaired. The manufacturer was made aware of the failure. The contact was informed that they would not assist because the claims deadline had been missed. The approximate failure mileage was 128,000.

Filed Sep 22, 2014 · Engine · KY

Engine had blown a plug out about 300 miles ago on the number 3 was repaired with repair kit new plug and coil was put on. Was traveling started up hill engine began to miss drove 20 miles to destination had truck tested at advance auto parts readout stated misfire on cylinder 1 and 3 and bad coil on 3. Replaced coil 3 again took to mechanic his computer read out was number 8 coil was bad replaced it engine continued to miss took it to the mechanic he changed all the plugs the 2nd plug on drivers side was loose and ready to blow out and he took the number 3 plug out that had been replaced prior the whole bottom of plug was melted could have resulted in a fire looked down in engine with camera the piston was destroyed. This problem is from the factory installed plug blowing out and fragments going into engine. Now I have to replace my engine 2500 out of my pocket d/t poor head design ford is well aware of this problem and refuses any assistance ford actually has excluded blown plug repair from their warranty. When you purchase a new vehicle you expect to get more than 106000 miles.

Filed Aug 4, 2014 · Engine · 50,000 miles · IL

Tl* the contact owns a 2006 ford f-150. The contact stated that while driving uphill, there was a engine misfire. The vehicle was taken to a dealer where the vehicle was repaired. The failure recurred. The manufacturer was not made aware of the failure. The failure mileage was 50,000.

Filed Jul 1, 2013 · Acceleration, Engine · 100,000 miles · CA

Vehicles misfiring and stumbling during moderate accelerations and cruising when a load is put on motor. ( going up a hill, slight incline and passing). Spark plugs were unable to be removed for replacement. The spark plugs were not of good quality and would need to be replaced more often than usual. The manufacturer was made aware, however no assistance was provided. $1249.00 to change one spark plug.

Filed Mar 19, 2013 · Electrical, Engine · 113,025 miles · NJ

2006 ford f-150 harley davidson has coil misfire problem. All eight coils have been replaced in the last 24 months and three have been replaced twice. Cat converter has been replaced twice in the same time period. All plugs have been replaced. The car continues to misfire. As a result, the vehicle has an extremely strong odor of fuel resonating. The dealer states that they cannot do anything to find the root of the problem. This vehicle is dealer serviced.

Filed Nov 27, 2012 · Engine · 90,000 miles · CA

According to the model year ford f150 maintenance manual, spark plugs are to be changed every 100,000mi. Just prior to this mileage for removal and replacement of the spark plugs the engine started to develop a misfire. Ford has recognized the problem with the spark plugs and the difficulty to remove them. This known maintenance issue LED ford to provide a tsb on the issue. This misfire has almost caused me to stall several times while towing a 7,000lb boat. This is dangerous and creates a safety issue for myself and the motorists around me. I express concern that ford should be replacing these defective plugs with updated designs before tragedies start to happen. This engine/spark plug design entered service in 2004 and vehicles, like mine, will begin to experience serious safety related incidents if it is not addressed.

Filed Jun 12, 2011 · Fuel system · 32,000 miles · NY

Driving on interstate 90 in michigan truck started misfiring and about 1000 feet later the engine quit altogether. Replaced the fuel pump module which the mechanic said was very common in northern states. Corrosion between dissimilar metals caused the module case to break and allow water inside and short the module out.

Filed Mar 31, 2011 · Engine · 58,000 miles · PA

Over a period of 3 months, I was experiencing a rough idle, loss of power when accelerating on flat surfaces as well as climbing hills. I took it to a mechanic who said it was 2 bad coil packs. They fixed it and 2 weeks later same incident occurred and they replaced it. During this time, I could always smell the odor of gasoline. After the large expense I was assuming, I called the ford dealer where I bought my 2006 f-150 lariat. The service manager of 22 years apparently never heard of the coil pack going bad along with the spark plugs breaking due to this. After arguing for a week with them, they finally agreed to pay for the replacement of all 8 coil packs. During this sequence, a coil pack was going bad weekly and I had to continually have it in the shop. Ford needs to address this issue and as I can see, there are a lot of these issues out there and ford continues to disregard a recall. There is a definite safety issue as gasoline will emit from the crack in the coil pack and could cause a fire under the right condition. This is unacceptable.

Filed Aug 5, 2010 · Fuel system · 28,000 miles · IN

2006 ford f-150 super crew 5.4l v8 with approximately 28000 miles began to run rough when I let off the accelerator. Upon restart, the vehicle was smoking heavily and very rough to idle. Check engine light came on at that point. Vehicle was sluggish, had hardly any power. Took to local ford dealer who advised that fuel injectors for cylinders 7 and 8 failed, flooded the cylinders and caused a hydrolock. Initially I was advised that this was a $400 repair to switch out the injectors. Upon subsequent inspection, it was determined that significant engine damage had occurred from a thrown rod. Dealer now advising that a new motor will be required. Vehicle has manufacture date as 1/2006 (drivers door sticker). Ford advises that while 2005 engines had this same issue, my engine was not affected and is not subject to recall.