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Ford F-Series Transmission Problems



  • This is just a thought, dont know if you tried this but did you replace the entire valve body itself or just the snap ring? It could be an internal problem with the valve body? Just some thoughts I am sure you've probably thought of every possibility. I have one of these F150s even with its problems I like it. But I think I will buy chevy next time.
  • when the overdrive went out I had pulled the valve body down, replaced the snap ring, and fished out the piece that was stuck in it. I had it towed to a transmission shop this morning to have the experts look at it. When the truck works right I absolutely love it, I have to agree with you there. It is a great truck to drive, and it performs well both on and off the road. I am just tired of being without a vehicle and without money when it breaks down.
  • I have a 2007 F-150 FX4 with the 5.4 and when I am driving and the RPM's get low as it shifts to a high gear and i gently mash the accelerator the truck starts to shake. I need a professional opinion. There isn't any kind of engine light coming on and the idle is normal.
  • Coil packs are very common on the 5.4 and it causes this issue. I'm sure if
    The trucks rpm's are high the truck runs fine. Also doesn't like to
    Spit out a code. If this is in fact the issue replace them all because they
    Will start to go one by one. Good luck.
  • 305mack305mack Posts: 1
    edited February 2012
    In the last 6-7 months, I noticed when I incline in the truck, it jerks. It was not doing it that often but it was doing it. Took a 3hr trip last month and noticed that it jerk several times. I took it to the mechanic and had the transmission flushed and serviced. It continued to do it. Now the transmission indicator light is on. What could be the problem and what should I do?
  • rwlayrwlay Posts: 3
    It's not the coil packs it's in the tranney when the accelerator is gently pressed to boost power enough for a slight incline the overdrive will start slamming until you give more accelerator. The torque conv slip actual will range from 0 - 16383, the torque conv clutch will range from 0 - 100.0% and that is how all the pressures are fluctuating while the tranny is doing this slamming.

    Would the TCC Pressure Control cause the problem? And also someone may have put the wrong fluid in it, would this maybe be the cause?
  • I have an '05 SCREW w/ about 86,000 miles. Doing the exact same thing. Seems to happen in higher gears, 30-50 mph around 1200 rpm.
  • Sounds like exactly"> what's happening with my 2007 F150 SuperCrew, 5.4, 75K miles. Happens on a slight incline if I take my foot off accelerator and then gently press accelerator again at around 50 mph. "Slamming" is a pretty good description of it. It's a heavy jerking/clunking. I usually either let off or give more accelerator to make it stop. It seems to have something to do with shifting in or out of overdrive. If I turn overdrive off, it doesn't happen. What's the fix for this?
  • Please forgive me, I'm not a gear head and my terminology may not be correct, but Recently I noticed when I'm traveling between 40 - 50 MPH with my foot off the accelerator pedal and then accelerating, the vehicle (engine) feels like it is missing, but then I took it to a garage who placed it on the computer and nothing appeared to be wrong. Then a friend was riding with me and the vehicle "did it", he said that it could be the transmission. He called a friend (mechanic) who said that the 2006 has had some transmission wiring problems. When I think of transmissions, I don't think of wiring...??? Has anyone heard of this and is it a shop repair or can I do myself?
    Thank you for your comments.
  • angrahamangraham Posts: 1
    I have a 1994 F150 2wd 5.0 302 automatic transmission. Just replaced the tr switch (neutral safety switch) because I thought that was the issue however the problem is still there. Starts fine idles at about 1000 rpm some days you can put her in drive and off she goes she will shift roughly but she shifts, other days (or later that day) i put her in drive and she wont shift out of second. there are no determining factors as to why its slipping or why it will slip but I can be driving along at 40 to 50 mph and she will slip right out of gear and go into first, the rpm jump from 600 or 1000 to 3000. I put lucas transmission stuff in it that said it helps with slipping and seals any leaks but that was before I changed the tr switch. Any suggestion or experience in the matter would be greatly appreciated as I don't think I can afford to take her to the shop and if I can fix it myself I would rather do that.
  • I just experienced like a miss firing with my 2006 f250, had a turbine speed sensor error and replaced, kept with the tow haul lite blinking and miss firing so the wire harness was replaced also replaced. Hope this was it, I'm getting the truck today.
  • Good afternoon. I have an 06 F150 5.4 Triton Lariat 4x4 crew cab. Between 40-50 MPH the truck bumps or bounces. If I accelerate the truck hesitates then takes off, and the bouncing goes away. Also, if I let off the gas peddle, it goes away too. The check engine light isnt on. I had the transmission flushed at 100K, I now have 150K, on the truck. It doesnt sound good but other than that, the truck runs excellent. I have heard of some wiring issues but i can't confirm. Thank you for all your help.
  • brixybrixy Posts: 1
    This exact problem was making me crazy. I was sure I was into another transmission. It was simple: a new set of plugs. Seriously, I had an error message for a coil, but it was fine. The plugs were totally messed up. They are wicked hard to remove once they are this old and will separate. You'll need a special Ford tool to remove the part that separates. It's $120, and trust me you'll need it. IT'S NOT THE TRANNY! IT'S A STUPID SPARK PLUG SHORT!
    Good luck.
  • tjindallastjindallas Posts: 1
    Got to love the Internet. I came looking for a solution and your post exactly matches my problem. Year/body/mileage/speed spot on. Did replacing the plugs work for you?
  • I have not done anything yet. I kind of know how to avoid making it happen now. I have a little ove 90,000 miles so I will probably just have the plugs done this summer and see if that fixes it.
  • Just tuned the truck up and that's all that it needed. It is running like new!
  • I went ahead and had a tune up done to the tune of $500+. Also had to have the drivers side IWE done a tthe same time. Funny that they told me it would be an extra $100 for each plug that broke off when trying to get them out. I was going to hit them with "what is the book time on a plug change" and "how much time did you actually spend" I was not going to pay an extra $100 per plug. I have heard the tool does an excellant job of getting them out. Fortunately for me, no plugs broke. The tech said he has been using a new technique - which is the complete opposite of what FORD tells them to do. He said he puts a small impact socket on the plug and lets it hammer away for 3-5 minutes on low pressure, about 30 PSI. Then he tries to remove the plug. HE said he has done about a dozen trucks like this and has had no plugs break. I don't know, but it worked for mine - thank goodness. Now to fix my odometer display and replace my drivers side window switch AGAIN. Did front brakes this weekend - pretty easy job. Oh, by the way. They also charged me $200 for diagnostics on both issues. I took the tech for a ride and he diagnosed both problems on the ride - said he was sure that's what it was. Still charged for the mysterious "diagnostics".
  • muncymuncy Posts: 10
    my 1992 ford f-150 tranny keeps wearing out the forks for first and second gear every few months why, help,
  • can you interchange a 93 Ford F350 7.3L Diesel transmission with a 96 Ford F250 turbo transmission
  • I posted here because I was convinced I had a transmission problem. I read posts suggesting that it might be plugs. I was skeptical. But I finally took it in and had the plugs changed and the problem was fixed. It was the plugs. It's running great now.
  • I had the same issues with my 2006. I thought it was the tranny and it ended up just being the spark plugs. I had one plug break off during the changing of them, as it is very common with the 5.4 3V Engine. I tried to get Ford to reimburse me for the cost to extract the broken off plug. They pretty much told me to kiss my butt. It's a common issue that should've been recalled. I was lucky, I read other post where folks had to pay several thousand dollars to pull the heads to remove plug ends that fell in the engine. I've been a ford owner pretty much my whole life. But I think this is going to be my last one since they don't want to take care of their customers. :mad:
  • i have a 1994 f150 1/2 ton 4x4 truck. sometimes when you drive it the transmission will shift VERY HARD, as if it has a shift kit. but then again you might drive it for 2 or 3 days & it will shift normal. when it does this hard shift it will practically jerk your head against the back glass.. i've been told its prbably the speed sensors, one on the rear end, and one on the transmission. any body got any solutions to this problem?
  • my 1994 f150 is kinda doing the same thing. mine shifts very hard at times and other times you might drive it 2 or 3 days & it will shift normal
  • I just bought a f150xlt 1990, when i got it it was woring great for a work truck. after a week the cluch started acting funny. I was backing up out of my drive way and the cluch would not come off the floor,. I waited for about and hour took the resv cap off put only about 1/2 inc of fluid in the res and it was full but the cluch started working.. another week goes by and it is doing the same thing however now the res is still full. Should i just bleed the line or is there something more wrong with it?
  • cowboy9cowboy9 Posts: 161
    Hate to tell ya but it's probably the Clutch Slave Sleeve leaking on you. Now if you have a 4 speed you are lucky and its simple to change out but if you have the 5 speed you will have to pull the transmission.
  • Yea thats what i though however the fliud is still full not leaking nothing any fluid... I can not find a bleed value either idk..?
  • I have a 2004 F150 with 125000k miles on it. It recently stopped shifting into overdrive and would just go into a false neutral at about 30-40 Miles per hour. I have had diagnostics on the transmission and a service done and nothing was found. Has anyone else experienced this problem? Any suggestions or solutions??
  • bassiebassie Posts: 3
    edited October 2012
    Hey Guys : I don't have too much experience with the newer Fords, but I have a question on behalf of a co-worker. He has a 2007 FORD F150 5.4 TITAN, and has 145,000 miles on it. Just recently, the transmission started shifting hard both in town and on the freeway. The condition started in the high gears (3rd and overdrive), but now seems to be jerking alot all the time. From my experience with older Fords, I told him to check out the overdrive module, as I have known people that have had it 'go out', and it seemed like the transmission was shot, but in reality it was the overdrive module that had gone bad. As a test, I had him turn off the overdrive switch on the gear shift and drive it home today without using the overdrive. He did that (about 30 miles on the freeway) and some in town, and it performed perfectly ! - So does anyone know if on the 2007's, they still have a module that 'gives up' at a certain point, and just needs to be replaced ?
  • bassiebassie Posts: 3
    Hey Blake : That sounds similar to the problems i just posted with my friend's 2007. - My interpretation is that the overdrive contol module is shot. Take a look at my post and see what you think. I had another friend that had an older Ford that when the module went out, it jerked and bounced like the transmission was falling out the bottom ! - It would appear that Ford doesn't have the best overdrive systems ! - I wonder if your truck is losing the module in a different way ?
  • Hey thanks Bassie! I will check that out. So far, everyone has been convinced that the problem was somewhere in the transmission. I will let you know if that solves the problem!
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