hardly worth mentioning
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
79,598 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Ford F-150 engine problems

engine problem

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2006 Ford F-150 Owner Comments (Page 2 of 3)

« Read the previous 20 complaints

problem #30

Sep 082014

F-150 4WD 8-cyl

  • miles


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.

- Booneville, KY, USA

problem #29

Sep 162014

F-150 8-cyl

  • 78,000 miles
Vehicle started missing and bucking. Brought into mechanic and was told this is a very common problem with Triton 5.4L engine. Needs spark plug change and chances are they will break off in engine while changing (which 5 out of 8 did). Total cost a shameful $800 (estimate was between $600-$1200). Mechanic pulled out many prior invoices from owners with the exact same issue. The spark plugs in these engines should be recalled.

- Boulder City, NV, USA

problem #28

Aug 272014


  • 3,200 miles
Went to stop for traffic light applied the brakes and vehicle took off///////slammed on brakes to try to stop and slammed in park.came with in inches of crashing into car in front of me. Today is Sept.1st have not driven truck again////// call Ford Corp. They will not pay to check out truck. At 3100 miles had to replace tires. Orig. Had dry rot, ,,,,,

- Islip, NY, USA

problem #27

Aug 172014

F-150 8-cyl

  • 104,000 miles


Engine started making a loud noise upon inspection of engine found that the back spark plug on passenger side had blown out from head and of course stripped the treads from the head the spark plugs are the ones that came from factory they have never been removed or replaced vehicle was purchased new after reviewing information on the internet this seems to be a major problem with Ford 4.6 and 5.4 engine as well as resulting in fires and considering Ford makes a repair kit. If this has effected this many vehicle shouldn't Ford foot the bill.

- Booneville, KY, USA

problem #26

May 132014


  • 50,000 miles
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.

- Geneseo, IL, USA

problem #25

May 222013

F-150 8-cyl

  • 62,000 miles
Ford has an ongoing problem with the 2006-2008 F150. They have faulty sparkplug that when they need changedirections snap. This results in them having to retap the motor and put different spark plugs in which they charge $400/spark plug that snaps. The part that snaps falls into the motor that's which it is so expensive. Ford has known about the problem for years because they made sure to get new spark plugs as soon as there were issues. Numerous people including myself have called Ford and complained but they never do anything about it. I hope that you will.

- Avella, PA, USA

problem #24

Feb 102013

F-150 8-cyl

  • 83,000 miles


Oil pump/pressure problem causing knocking and engine to stop.

- St Petersburg, FL, USA

problem #23

Mar 162014

F-150 8-cyl

  • 103,000 miles
I was driving down us 281(busy 3 lane highway) in san antonio and the engine shut off causing me to coast to a stop in the middle of traffic. Once I got off of the road, the engine started up like nothing was wrong. After I inspected the fluids and saw everything checked out, I got back on the highway only to have the engine shut off again. I called Ford to see if there was an issue reported or a recall, and there was nothing. I found over 300 complaints on various forums by typing in --2006 F150 failsafe--in the search engine. I think this is a real safety issue that Ford needs to address before someone gets killed on the road. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- San Antonio, TX, USA

problem #22

Mar 142014

F-150 8-cyl

  • 22,000 miles
When stopped at a red light my engine began to rev. At very high RPM's and the tires burned out when I shifted the transmission into neutral. I purchased this truck in Dec. 2013 and this was approx. The 7th incident of sudden acceleration. It seems to only happen when stooped or slowing down. Any help in this matter would be deeply appreciated. Thanks in advance.

- Maple Shade, NJ, USA

problem #21

Feb 102014

F-150 8-cyl

  • 97,000 miles
I brought my truck in to my local Ford dealer because the check engine light came on. It is a 2006 F150 4.6L - after his inspection, the mechanic stated that the bottom of the #2 spark plug (manufacture installed) had disintegrated and fell into the head causing so much damage to the #2 cylinder that I have to replace the entire engine at a cost of over $6,000 plus tax. It will take over a week to fix and I do not have another vehicle. I would like Ford to reimburse me for the expense. I have written to their "customer care"( [xxx]) department, but have had no helpful or satisfactory results. This is a known issue as Ford has issued a tsb and developed a tool to assist with the removal of faulty spark plugs.

- Jacksonville, FL, USA

problem #20

Dec 192012


  • 90,000 miles


The contact owns a 2006 Ford F-150. The contact stated that the vehicle was hesitant to acceleration. The vehicle was taken to a dealer where the technician diagnosed that the spark plugs were defective and needed to be replaced. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 90,000 and the current mileage was unknown.

- Creston , IA, USA

problem #19

Jan 222014

F-150 8-cyl

  • 52,500 miles
Went to start truck and engine would crank but would not fire. I tried the starting fluid test to see if it was an ignition problem or fuel problem. Gave a little shot of starting fluid into the intake and then tried to start. Motor acted like it was going to start but never started beings I didn't give it enough starting fluid to start because I'm not a fan of using it. With that I eliminated the ignition had to be fuel. I got on the internet and searched no start problem for 2006 F-150 and found a you tube video of the fuel pump control module rusting out. Went out and dropped spare tire and took the control module off the cross member and noticed the hole corroded through the housing just like the video. I got the upgraded part from a Ford dealer for $163 and installed. Runs fine now. My biggest complaint is Ford knows there's a problem since the have came out with an upgraded control module so why isn't this a recall? I live in a state that temperatures in the winter months can be below 0 degrees Fahrenheit and drive an hour one way to work, this could have happened when I was on the road in extreme cold, could of had my two children with me broke down on the side of the road and cold out. Luckily it happened at home but still it was 4 degrees out and laying under my truck taking the module off was not very pleasant. Think this is something that Ford needs to do something about.

- Tipton , IA, USA

problem #18

Jul 202013


  • 128,000 miles
When driving home, check engine light started flashing, immediately stopped and had vehicle towed to a well reputable shop for diagnosis and repair. Was diagnosed with two fuel injectors failing and needing replaced along with all spark plugs needed replaced. 6 of the 8 plugs snapped in half and needed to be burrowed out on top of it costing $90 per plug drilling out. Total for repairs came to $2300. But after repairs were completed I still do not have a running vehicle. The engine starts but oil pressure drops after 5 mins of running. I would love to find a solution to this, if this is common or not. And if so, why is it not recalled?

- Wadsworth, OH, USA

problem #17

Jan 012013


  • 76,000 miles
Vehicle began to smell like gas in the cab on numerous occasions. Took it to Ford dealership mechanic and was told that the source of the gas smell could not be found. A few days later upon starting the vehicle, a very loud explosive sound was heard under the hood. The vehicle was turned off and towed back to the Ford dealership where it was determined that the original #2 spark plug had blown out of the engine and damaged the head. Repair exceeding $700 with absolutely no responsibility taken by Ford. Repeat incident less than one year later with another cylinder.

- Broomfield, CO, USA

problem #16

Aug 152013

F-150 8-cyl

  • 181,000 miles
While approaching a stop the truck gauges started going crazy. Truck stalled but restarted with gauges still acting crazy. All gauges would bottom out and come back up and radio was turning on and off. Replaced battery but only stalling issue was resolved. Took to local Ford dealer but since the truck only does this randomly, they were not able to diagnose the problem. Truck runs perfectly but gauges and radio still go on and off making it extremely annoying to drive. Very frustrating to know that so many other Ford owners have the same problem but no solution has been offered from Ford.

- Riverbank, CA, USA

problem #15

Jul 182013

F-150 8-cyl

  • 73,653 miles
When I started the truck, a spark plug blew into the head. The mechanic at the Ford dealership told me this was a common problem with these trucks. The repair cost me $3,448. To replace the head. If Ford is aware of this problem, the vehicles should be recalled and the problem corrected. My family was left stranded 7 hours away from home, had to rent a vehicle to get home and then two weeks later, had to return to dealership and pick up the truck. So stressful and expensive. Just glad we were in a town when this happened!

- Teague, TX, USA

problem #14

Jun 212013


  • 71,000 miles
The contact owns a 2006 Ford F-150. The contact stated during routine maintenance on the vehicle she was informed that the spark plugs were fractured. The vehicle was taken to a private mechanic who repaired the vehicle. The manufacturer was contacted about the failure. The failure mileage was 71,000.

- Spring Hill, FL, USA

problem #13

Sep 032013


  • 40,000 miles
The contact owns a 2006 Ford F-150. The contact stated that the vehicle was started and the engine exhibited a loud noise. Additionally, the contact smelled a burning odor. The contact took the vehicle to a local mechanic, who stated that the spark plug had melted due to the heat from the head gasket. There were no repairs made to the vehicle. The failure mileage was 40,000.

- Sacarmento, CA, USA

problem #12

Jun 072013

F-150 8-cyl

  • miles
2006 Ford F-150. Consumer requests reimbursement for vehicle repairs. The consumer stated he was quoted a price of $447 to replace the spark plugs. However, when he received the bill, the price had doubled.

- Racine, WI, USA

problem #11

Jul 032012


  • miles
Spark plugs and coil packs have failed across our entire fleet of 2005-2008 F-150's. the potential for seized spark plugs is significant due to increased heat from failed coil packs. The coil packs seem to fail approximately every 25,000-75,000 miles. The repairs have been very costly - especially with a fleet of 200+ vehicles. Ford has not offered any assistance with any of the claims. Symptoms - the vehicle sputters or bogs down under load while traveling up a hill or under hard acceleration. Dangers - the vehicle will not accelerate with 100% power while under load in a dangerous situation. The need to quickly accelerate becomes altered due to possible spark plug/ coil pack failure. Risks are accidents, personal injury, or even worse.

- Monroe, GA, USA

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