I'm driving my truck when all of a sudden it will start vibrating horribly, like driving over a washboard type of road. The only way to get it to stop is to pull over to the side of the highway, put it in park, wait, and then try to resume driving. But this does not always work. You sometimes have to stop and change to park, or reverse, a couple of times, before driving again so that the vibration goes away. I have complained about this before, and I see hundreds of complaints for the same issue on "Ford owner websites", and everybody is pissed. Nobody can get an answer from Ford service as to what is wrong. Many people have replaced many different things (I.e. transmission, clutch pads, bearings, U-joints, emergency brake cable or pads), all to no avail. They have wasted their time and money, and Ford refuses to live up to this awful and very dangerous problem. Apparently, Ford knows this is a big problem with 2004 F-150 trucks, especially, but will not acknowledge it. Someone wrote on the web that Ford knows they had a retooling problem with these trucks, and let the trucks go out for sale anyway. I am now having this problem more often, and I am afraid to drive it. I do not have any money to fix my truck, since our economy is so bad and have been unemployed for years. Make Ford take ownership of this recall problem!

- St. Louis, MO, USA

Truck would not start even though lights, dash indicators, & radio came on. Checked under hood & then placed in neutral to try & start. Vehicle started in neutral. Placed vehicle in park and upon taking foot off brake, vehicle lurched backward (in reverse) almost going over an embankment when I slammed brakes. Vehicle shift indicator showed it in park but, transmission was actually still in reverse. Could not get shift to engage into park. Placed vehicle into garage with emergency brake secured until could determine problem. Research indicated Ford had a recall (recall - #97V171000) for this exact issue on 1997-1998 models only. But, apparently it is still a problem on later models. Could not find a recall on 2004 model. Note that this condition almost caused a serious accident.

- Cincinnati, OH, USA

Started my truck as usual to go to work, put it in reverse and it was like I put it in neutral, no engagement at all. Glad I wasn't in a situation when this happened that could have put myself or someone else in danger. Ford knows they have a problem, it is wide spread. Sure my truck has 124000 miles on it but the transmission malfunction light has been going on and off for the last 70000 miles and the dealer said they could not find any trouble codes or malfunctions during this period. I can rev my motor to about 2000 RPM and it will finally gently start to roll into reverse but my failsafe mode engages, check engine light comes on and the motor stumbles badly until I put the vehicle in drive gear and go about 2 miles at which time the failsafe mode goes off and it smoothes out. For the most part my vehicle has been dealer maintained.

- Owensboro, KY, USA

When I turn left or right I can feel a shake or vibration coming from the rearend.

- Cold Spring , MN, USA

The rear differential is making a chattering noise at low speeds. It has a posi-trac rear differential, and I can feel a 'stop and go' type action as I am driving in a straight line at low speeds. Even after I added a limited slip additive, the problem is still there. It tends to be worse after a cold start, and when I am going up hills of after I go over a speed bump.

- La Mesa, CA, USA

(summer, 2007, 28K) at highway speed (60 mph) huge grinding noise and vibration, light in dash came on by itself showing, "4X4" turned on, slowed to 20 mph, huge clunk as 4 wheel drive system engaged without drivers requesting it to engage. Ford roadside assistance was contacted and Ford towed vehicle to Ford dealer, Ford dealer "reprogrammed" something, said it had moisture in a sensor, causing the 4X4 to try to engage. (September 12, 2011, 69,980 miles) at highway speed, (58 mph) during mild acceleration, 1500 - 1800 RPM, a mild grinding sound from under front end, by taking foot off gas peddle then reapplying gas the grinding sound stops. Contacted Ford dealer, they said drive it in, contacted Ford customer satisfaction department, they said to have dealer check it out, Ford dealer investigated and said there is a problem with volume of vacuum that is necessary to prevent the 4X4 system from engaging while driving on the highway at highway speeds. Ford dealer indicated that it maybe unsafe to drive like this and that this is normal for the vacuum system to fail like this, representative at Ford customer satisfaction department said that their dealer knows how to diagnose and cure problems best, and since the vehicle has more than 36K it is not a concern to Ford. My concern is that steel gears that are suggested to be engaged at a walking pace on soft pavement are automatically forcing themselves to lock together on dry pavement at 60 mph, and Ford and the Ford dealer show little concern for this condition since the vehicle has more than 36K and since no extended warranty purchased from the dealership.

- Medina, MN, USA

The 2004 F150 and I assume Expedition had undersized front brake rotors and calipers and were outlined in a service tech bulletin for the purpose of diagnosing the front end shaking/shimming during braking. This is my opinion should have fallen under a mandatory recall due to the serious nature of poor engineering. No recall and out of pocket $$$. the same holds true for the rear differential which in my case has been replaced (3) times and again Ford published a tech bulletin outlining the fact that the '04 rear differential housing was subject to faulty machining causing rapid wear on ring/pinion and bearings. I believe these two defects should have been addressed due to the fact that failure of either component could result in a serious accidents. I truly believe Ford tried to cover up/white wash these defects. I still have this '04 and still have issues with the brakes and rear differential not to mention a host of other issues that have plagued this particular year model. I look forward to hearing from someone and would like to know the extent of Ford involvement and any accidents involving '04F150's. best regadrs

- Hurst, TX, USA

2004 Ford F150. Consumer states problem with rear differential the consumer stated in 2006 the transmission had to be replaced.

- Washington, DC, USA

Severe shuddering from rear end during low speed turns.

- Geneva, IL, USA

2004 Ford F-150 fx-4 pickup truck that has a grinding noise in the rearend. I complained about this a couple of years ago while truck was under warranty and gene latta (the Ford dealership in hanover, pa) said they fixed but here it is at 45,020 miles making the same vibrating/grinding noise again. After finding several complaints online this is obviously a problem with this model and Ford should fix at no cost to the owner!!!!

- Abbottstown, PA, USA

2004 Ford F150 with a 4.6 liter Triton engine. Ejected 3rd cylinder back on the passenger side. This happened 24000 miles after I changed the plugs.

- Holton, IN, USA

2004 Ford F-150: The transmission will not shift out of 4WD when driving. It will however shift into neutral. The failure was caused by the solenoids which can get wet and short out ruining the actuators. This is a part which Ford knows is defective, because they have created a new part. They currently have a tsb out on this issue. In April of 2006 they started putting water guards on the solenoids to ensure this won't happen. Having a transmission that will not engage properly is a safety hazard.

- North Andover, MA, USA

Plug failure in V8-Triton engines they break off in the heads of the engines is one problem causing a 300 dollar tune up to sky rocket all the way up to 2800 dollars this is all Triton 3 valve motors Ford said the fixed the problem they did not and they still break. The other problem is that some of the plugs blow out the heads causing a sudden power loss and possible accidents when I contacted the dealer all they would do is give me a price quote against broken plugs trying to take them out they said it falls under warranty restrictions and that's not fair because one of the selling points about the truck was no need for a tune up for $100 thousand miles you can't hit that number 3 years 3600 miles there are a lot angry people out there because of this me included and I believe it falls under a dangers vehicle problem I no they have fixed other people trucks over the warranty and I had to fix my on truck after it stop running and I couldn't get a attorney I am handicap and don't have the money it took at least week to get the plugs out by my self the new plugs cost a $103 and the time crawling around because my legs or bad I figure 100,000 would be fair or may plugs paid and a trade for new tires.

- Evansville, IN, USA

My drivers side window went out one day, then about two days later my passenger and back left window went out. I brought it to the Ford dealership to get it fixed, along with what I thought was a spark plug and coiles. Well I a found out that a 2004 F-150 I have to replace the engine. While it was in the shop my back right window aperantly went out. It was working when it went in, and when I got it back I had a plastic tarp on my window, panel was off, and noone had told me they let it rain in my truck or that the one window that had worked was now out also.

- Woodworth, LA, USA

Transmission is messed up.

- Indian Trail, NC, USA

I own a 2004 Ford F-150 4 door. I have had to replace all four power window regulators. Two were still under warranty and the other two came out of my pocket. The dealership is aware of the problem but nothing has been done to help the customer. Also, the transmission has a kicking problem at certain speeds.

- El Paso, TX, USA

Bought a used vehicle 2004 Ford F150 has a shudder/vibration in the rear axle. Took it to a Ford dealer for service. It is a known problem and they will fix it to "lessen the concern, " not completely get rid of it. My aftermarket warranty will cover it after deductible and taxes. But I don't like the sound of lessen the concern. And it seems to be a recurring problem with this vehicle.

- Plymouth, PA, USA

: the contact stated while in the idle position for 30 or more seconds, the vehicle drifted into reverse when the consumer began to accelerate from idle position. There were no warnings prior to the incident. The vehicle was taken to a service dealer who determined that the vehicle was performing normally. However, the central computer needed to be reset. The manufacturer was notified. Updated 12/12/2006 -

- Normalville, PA, USA

While traveling a smooth stretch of highway the truck started to vibrate. This vibration intensified until the whole truck was shaking. After stopping at a traffic light the shuddering continued until I pulled off the highway and turned around in a parking lot to go back to a nearby Ford dealer. At this point it did not shake again. The Ford dealer service department checked the whole truck over the next day and could not find anything loose or damaged. The shuddering felt like a universal joint gone bad. There has been no repeat of this since the truck was new. There has been an ongoing shudder while making turns from a standstill. My local mechanic put an additive in the differential and this seems to have corrected the problem. I don't know if this may be related to the original vibration.

- Edinboro, PA, USA

2004 Ford F150 supercab 4X. Intermittent violent vibration in driveline. Dealership has replaced rear end, driveshaft, checked front end, tires, etc. Usually small vibration becomes violent at times. Can not duplicate at will. Dealership now says nothing wrong. When violent shake occurs must stop vehicle to stop shake. I feel that it is a safety issue. Has shaken violently 6 times in about 6000 miles.

- Algonac, MI, USA