Ford 6.7L Power Stroke Diesel :: 6r140 - Transmission Slams Hard Into Reverse / Shifting From 1 To 3 Is Awful
Nov 25, 2015
I'm having problems with my 6r140 in my 2011, the truck is an early build around 8/2010 I believe.
After cold soak when shifting into reverse after allowing engine to warm a bit the transmission almost always slams hard into reverse.
After that shifting from 1-3 is awful, the transmission will try to go into 3rd but downshift to 1st then fail to go back into 3rd multiple times. This situation is extremely dangerous when trying to pull into traffic.
Oh and once the transmission gets into 3rd it will skip 4th and go right into 5th. There is only 94k miles on this transmission/truck.
I just bought this truck about a month ago, does this sound like an issue with the solenoids in the valve body?
I'm very mechanically inclined and can swap them if need be but now we're talking few hundred in solenoids and then getting the trucks pcm flashed right?
Also fluid has been changed and I used mercon lv.
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I was reading yesterday where someone was wishing for a tuner that would allow you to skip 1st gear. I realized today that you can do that in Manual mode and was even surprised to find out that it would even let you start in 3rd. Driving around without a load, 1st gear does seem a bit of a nuisance. You can't really get on the throttle until you get 2nd! Playing around with it a bit, starting in 2nd, and even 3rd around town was really nice and I didn't miss the shifts. The other thing I noticed that when in manual, it will down shift based on speed, but not throttle position, so if you're going fast enough, it will maintain that gear without downshifting as you apply more throttle. I'm assuming that Ford put some thought into this and won't let you shift in a manner that will cause damage. It would be nice, however, if it would bypass 1st if not in Tow/Haul mode and not make you do the manual shift thing.
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Took my 2011 F250 in to the dealer where I purchased it concerning intermittent misses on gear changes. The dealer had no history or knowledge of problems with shift flares. I was told they would check it out. Bottom line, their checking it out yielded no results, no action, and no "engagement", pun intended, to resolve a serious concern. How did others resolve the issue when it came up?
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05 F-350 6L .. Automatic Transmission
When I got the truck I noticed it would slam hard into reverse. Ever since it is taking longer to engage reverse gear and now I have to rev it to 1000 rpms for it to engage with a hard SLAM.
I also noticed that if I do a fast take off, there is a knocking sound coming from drive shaft/differential area (like knock knock knock knock knock then goes away). Then a slight vibration ending at around 30 kph (~20 MPH). There is also some oil leaking from the transmission. I added some mercon sp yesterday - it was a bit low.
My guess for the knocking and vibration is the center support bearings and U-joints. Transmission??? One thing I know I am going to be banging away at that shaft but the transmission problem really scares me.
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I just bought this problem child and I am having som trouble finding out why when you put it into Reverse it slams into gear hard enough that the nose dives down. I cant figure out why. Then RPMS are always low like 800 and it acts like its at 2500. It slamms that hard.
The 2nd issue is when I push the brakes there is a vaccum sound from under the dash and the brake pedal gets hard and the car does not stop well. I assume it is the brake booster but I have not tore the dash appart yet.. The RPMS dont drop out when the vaccum leak starts and thats what confuses me.
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I just recently bought a 95 F150 with a 351. The truck has high mileage, about 190k, and I am not sure how long the transmission has left. It rides smooth down the road, but when I put the truck into reverse it hesitates for a moment then makes a loud clunking sound(as if a door is being slammed) and then jerks into gear. The reverse works great at the moment though. Should I be worried, is there anything I can do to fix this?
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In my 2011 F-250, 6.7, auto....it seems that at certain times went the tranny shifts from 2nd to 3rd and I pause with acceleration, for some reason the tranny seems to go into a slip mode and then slams into 3rd. Now I read about 8 months ago that there was a computer upgrade via Ford. Which they did when I was having some work done on the truck at the dealership.
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2011, 69,000 miles. My truck is experiencing very hard shifts from park to drive or park to reverse after a cold soak. It goes away once warmed up. I can't find any excessive driveline play and my transmission fluid level appears fine and in good condition.
The last repair done on my truck was around 7,000 miles ago and it was for a transmission fluid leak around the bell housing. They just replaced the seal between the torque converter and transmission.
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This is is a truck I hardly know anything about. My wife bought it while I was deployed for herself and when it comes to vehicles she's an idiot. No, really she told me she bought it because at horse shows everyone else has one.
I noticed an oil leak and had a reputable shop look at it. They told me it was coming from some seals on the turbo. Long story short there is a brand new turbo on there, stock replacement. Now it seems very under powered and shifts hard. Pressing down anything more than 25% throttle will cause hard shifting or no shifting at all. It'll stay in second until I ease off the throttle.
I tried searching a few terms but I'm not sure what to look for. I don't know if someone has messed with the tuning. Broken clamp on the turbo. Replaced and everything is back to normal...
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I have a 2006 f250 6.0L with 76,000 miles on it. And it just started to shift softer then normal under light throttle. The first to second to third shift are softer then normal. And the third to fifth gear shift seems to have a lot of what I would call overlap and some times it feels like it is slipping. Gets better under hard acceleration but not as firm as it used to be. I have always changed the trans fluid and filter every 25,000 miles. Trans temp runs about 150 to 160deg. I checked the fluid today and it's bright red and does not smell bad. And I don't have any coeds. Could it be a solenoid going bad ?
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Transmission was not shifting out of second gear set a code stuck solenoid cleared code seems to be working now....
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Hauled my last 2 cord of wood for the season, and I now have a pretty good 3-5 slip in and an intermittent bang/clunk when its shifting. So I've put this off for a long while now, and I want to fix it. I've done my research, and I don't really feel like I'm any further ahead than before I did my research.
I'm looking for recommendation's on what transmission and or kit is the best for my truck. I pull my 5er 10-15 times a year mostly up and down the east coast. We are looking to get a new 5er with a bunk house, my goal is to stay in the same weight neighborhood, I run 13-13,500 now depending on where we are going. The goal is to be able to get maybe another 3-5 years of use from the truck, maybe more, and then upgrade to a newer truck. So let me hear what you all recommend as I'm going crazy and probably over researching what I'm gonna do...as usual.
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For those of you tuned and deleted......intermittent transmission shifting stutter is gone now? Mine sure is. Never once since the mods have I had that annoying stutter when the truck is cold and I'm easy on throttle between 2nd and 3rd gears. What a relief it is to have it shift NORMAL ALL THE TIME!!! Stutter no more after H&S Tune and Delete, for about two months now.
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I tow a car hauler that is about 8000 lbs. On my last trip occasionally when the truck would downshift into 5th under a load, it would bang in there pretty hard. Not a smooth transition, not every time just some times. Just wondering it that was normal or the start of a potential issue.
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I have a new issue that started last Friday. When I put the truck in gear and let it begin to pull itself, drive or reverse, it has a strange jerking or slipping deal. It doesn't happen every time but when it does you can feel it in the drivetrain. I took it to the shop that did the motor work and they ran a diagnosis(while I watched) on the motor and its turns up nothing. It runs perfect, shifts like it always has, but just has this jerking/slipping thing when I let off the brake and it starts to pull itself.
If I go from brake to throttle its fine. I had the rearend diff worked on to fix the leaky ring and pinion seal and the differential cover sealed at the dealer last month. I searched and don't see anything like what I am experiencing. Could my tranny be giving it up now? It has never been overworked and never overheated. I had the full fluid service done at about 70k and now it has about 130k on it.
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I am using my son's truck this week, 2012 F250, 120,000 miles or so. I left it running in the drive while I got something from inside the house. Guess it was idling approximately 10 minutes. When I put it in reverse the transmission would not shift and the truck didn't move. I killed it, re-cranked it and it went in reverse.
As I was driving down the road the transmission would change gears up and down for no reason. I stopped the truck, and put it in park. I would put it in drive and the transmission sounded like it wanted to slip. I put it back in park and the transmission would not engage. I then killed the truck, re-cranked it, and it drove fine for awhile and started doing it again,
I kill the truck, re-crank it, and we go down the road.
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When taking off the 1-2 shift and the 2-3 shift the truck will go into a neutral state for 2-5 seconds. when this occurs, the rpms will rev since your foot is on the accelerator. Once you let off the accelerator the rpms come down and the gear will catch. I have had the truck in the shop a few times without any luck. part of the problem is no codes are thrown so the dealer has no clue what to look for. This is extremely dangerous when in my case i pull out on a 6 lane hwy with 55mph speed limit. Ford more or less said to pound salt until a code is thrown or until something else happens. this nearly caused a nasty wreck 2 weeks ago.
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Recently picked up a 2004 Ex 6.0L. Drove great for a bit, then it started shift badly, then finally the Tow/Haul light came on. The original codes were P0976 and P0755.
P0755 being shift solenoid B, and the P0976 being SSB Control Circuit low. I replaced Solenoid B and that code went away.
P0976 stayed with no change in how the truck drives. Replaced the internal harness today, and again no change.
At this point I'm at a loss. I'm wondering if it's something between the PCM and the transmission?
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Noticed that the transmission is cold (ie. sits overnight) it is hard, sometimes impossible, to shift into reverse. Specs on my gti: 14k miles, pretty much stock, manual trans...
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I have an 2011 6.7 that has a h&s tuner. Lately my transmission seems to be confused about what gear it should be in when I'm driving about 45mph. It will sometime downshift hard. I have a early build 2011 and heard that it could be a solenoid problem with the transmission.
View 8 Replies
I have an 2011 6.7 that has a h&s tuner. Lately my transmission seems to be confused about what gear it should be in when I'm driving about 45mph. It will sometime downshift hard. I have a early build 2011 and heard that it could be a solenoid problem with the transmission.
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