Ford Transmission :: C6 Not Downshifting Until Complete Stop
Jan 17, 2014
My freshly rebuilt C6 with Transgo shift kit and Hughes 2500 stall converter won't downshift until I'm nearly at a dead stop. My Cruisomatic did the same thing in stock form. I roll up to an intersection and the light is green. I slow way down to negotiate the turn. I then throttle when headed straight and the tranny is still in Drive. It does the same thing when slowing way down for speed bumps. Could the shift kit or stall converter affect downshifts?
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I have a 77 F250 4X4, 400, C6. Upshifts and downshifts are working normally, except under light load and minimal throttle the tranny downshifts to 2nd at any speed under 40 mph. I've never had an automatic do this before. I checked the kickdown linkage is pulled up so it's doesn't seem to be in kickdown position always, no vacuum leaks to the modulator. I confess to be more of a manual trans guy so my knowledge is autos is limited.
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I'm trying to fix a transmission problem with my work truck. It's a company owned, 2011 f150 super cab, 2wd, 5.0 and 6 speed auto. It currently has 225K miles. The problem is very random occurring 2-3 times per week, usually happens on start up, and goes away after a hand full of engine restarts. It has happened twice on the freeway, the transmission releases and a complete loss of power and coasts to a stop. At the same time, the speedometer goes to zero regardless of vehicle speed. Normally, when it happens, the speedometer does not read, all the mpg, miles to E, and related meters show bars "-----". The vehicle starts and takes off ok, but when it tries to shift, it just releases and the truck coasts to a stop. It will repeat this for a while.
After several restarts, the truck goes back to normal. This has happened a couple dozen times now. The wrench and check engine light came on during the very first instance, but the auto shop said there were no trouble codes stored. They kept it for a week, and said it never reoccurred. I have a lousy video that shows, when this happens, the trans starts in 2nd, jumps to 5th, then 2nd, then 5th. I am past due for a new work truck and this one is on its way out, but has to last another couple of months! This truck has otherwise been very problem free and well maintained. I'm actually thinking of trying to pick it up cheap, if the repair is not too bad.
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2016 F250 6.7L 4x4
I getting some tranny noise when towing on incline from a complete stop. When I slowly press the gas pedal I hear grinding noise. If i press the gas more my truck starts to move and the noise goes away. It doesnt happen all the time. This started right after my 1000 miles recommended break in before towing per ford manual.
My truck now has 2800 miles and the grinding noise occurs intermediately regular driving. Mostly on steep incline or decline. I haven't taken it to the dealer yet because I cant recreate the issue all the time.
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When coming to a complete stop, whether from 5 mph or 50 mph. After I've been stopped for about 2 - 3 seconds, the transmission feels like it gives a little jerk. It feels something like a car coming out of gear without the clutch pushed in (not quite that severe but that's the general feeling).
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I have a 2012 Ford F150 that has started to slip (for lack of a better word), every time I come to a complete stop. It takes a few seconds, but then gunk! It just slips/jumps forward a little bit. Nothing after that. A buddy told me he thinks my U-Joint is going out. What else it might possible be?
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Well I have 8000 miles on my 12 Eco now and it has been the best vehicle I have ever owned but it has always shifted rough, Mainly into 3rd gear but you could always feel it downshifting when rolling up to a stop sign also, I just assumed it was the way it was suppose to be. This morning I was driving it and noticed it was shifting very nice and smooth, no downshift braking or the other little issues.
I also noticed the the select shift was turned off (the numbers on the dash 1-6) if you push the + button on the shifter you can turn them off, I have had it turned on since I bought the truck because I kind of liked the display but anyway with the select shift turned off the transmission shifts very nice, I turned it back on and the rough shifting returned, Try it on yours to see if it changes.
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When ever i am at a complete stop, i have to hold down the clutch pedal for about 4 seconds before it will go into any gear. If i'm in motion it shifts flawlessly through all gears. But if i stop and put it into neutral and let off the clutch, the next time i push it down it will take about 4 seconds to slide in any gear including reverse. I just bought the truck a few days ago so i don't know its history but everything seems well maintained. What this is and if it will cause major issues down the line?
1995 Ranger XLT 2.3L SOHC 2WD 5spd 169,000 miles...
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I have had my ecoboost for a couple months now. Overall I am very happy with it but I have noticed a shudder recently when accelerating and when coming to a complete stop at times. I only feel it when accelerating from a stop or when stopping completely. Kind of feels like something slips. I think I recall reading about this before on the 2011 and 2012s somewhere. What is causing this and is there a fix or is it just the way these trucks are?? I can deal with it but it is kind of annoying when driving in traffic.
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When I am going about 55 my transmission sometimes starts downshifting and then up shifting again for no reason.
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Have an 06 F250. When I slow down to make a turn then accelerate it's like the drive shaft spins half a turn before it catches. Been doing it for awhile now. Now I'm get a clunk when I come to a complete stop. When you stop then truck settles there is a little clunk. Does this sound like the slip yoke problem?
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I just bought the truck 2 days ago and the power steering is acting up. When I test drove it I noticed the power assist seemed weak but it has gotten way worse over 2 days.
Truck is a 2001 F250 4x4 V10 auto. 60k miles and totally stock except for Harley Edition wheels and stock size tires.
Now at a complete stop the wheel won't turn at all. If I roll it works. Doesn't matter if I rev the engine. It doesn't matter if I'm on or off the brakes. Tires have plenty of air. The pump is quiet and does not make any abnormal noises.
This is terrible because how can you maneuver a trailer if you can't turn the wheels when stopped.
I noticed the fluid was low and not reading on the dipstick. I added a few ounces and that's all it took with no change. I then used a suction pump to empty the reservoir with the truck off. The fluid was very dirty, probably the original fluid given the mileage. I removed about a quart and refilled it with fresh Mercon ATF. I also changed the serpentine belt because I noticed the belt was probably the original and was cracked.
It went away briefly tonight as I was playing with it. I thought I fixed it but I was fooled. What I did was remove the reservoir cap and turn the wheel from lock to lock while rolling forward slowly. Suddenly it was fixed . But 5 minutes later the problem was back.
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I have a 2000 F-350 dually. I am having an intermittent problem with the the OD light. The symptoms are after coming to a complete stop the OD light starts flashing and when trying to move forward it feels as if the brakes are dragging and sometimes stalls out the engine. The codes read with a Superchip 1705 are p1670,p0720, and P0503. When I shift into park, the engine rpms jump from idle to about 1500-1600. I have replaced both the differential VSS and the transmission OSS but still have the same problem.
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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 2000 f250 superduty gas v10 6.8L . I bought this truck about 4 months ago. Now when I take off from a complete stop the truck shakes up until second gear, shifts fine all the way up until the last gear it looses power "loosing power" i mean i can put my foot into the pedal and it takes forever to climb speed meanwhile the RPM'S never skyrocket like it the transmission was slipping if anything a couple times the RPM's dropped are stayed the same then as i take my foot off of the pedal once i have my desired speed sometimes not always the truck will give me a little jerk Also Just the other day I was driving on the highway and decide to put her on cruise control at about 70mph, I set the cruise control and the RPM gauge was just over 2,000 and the tach was fluctuating up and down about 1/16 of an inch. I been reading alot of forums and what I got out of them is it maybe pointing me to a misfire maybe the coil packs? Plugs?It's not something major like a transmission rebuilt.
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I have a 2002 F150 Super crew with a 5.4 and a 4R70W tranny. The issue I am experiencing is when the truck is driven where the tranny has shifted through all it's gears and cruising at say 55 mph, when depressing the accelerator pedal it either downshifts of something unlocks making a shuddering sound which sounds like when you run over rumble strips on the side of the road. The shuddering only happens for maybe a second at the most. If I am on the accelerator pedal when it up shifts or locks back up it makes the shuddering sound again. The harder the unlocking / locking or downshifting / up shifting happens the harder and longer the shuddering is.
This shuddering happens at the very last transmission function which happens in the transmission during it's normal operation. Other tan this issue the tranny shifts and operates excellent.
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Ok long story short I was given a conversion van that is built on a e150 van and has a 5.8 liter with an e40d tranny.. This van sat for at least 3 years till recently..
I have cleaned all electric connections on the tranny and the one on the rear differential . New filter and fluid but did not drain the converter after driving it for about an hour we finally got it to start shifting gears automatically the problem is it wants to shift only under heavy acceleration and then only to second at about 35 mph and drive at about 60 mph and over drive around 80 mph and all this only under heavy acceleration you let of the gas a little and it starts down shifting..
What I may look for next that may be pretty easy to try. My thoughts at this point are maybe the torque converter is going south but I am hoping for a more simple solution..
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I have had this for a year now. When I first heard it, I thought someone threw something at my vehicle. I would stop then be at the light then about a few seconds to a minute it sounds like a solenoid kicks out or kicks in... its pretty loud, my passengers even question it. I have taken it to the dealership 7 times now and I am getting frustrated as they do not hear anything each time. As I drive with them it doesnt do it... it seems it does it sporatically... Sometimes it does it after I have exited the vehicle and walking off, it goes through its normal electrical noises then clunk clunk... Strange. I have recorded a sound clip but they said they still have to hear it themselves and they believe it has something to do with the elecrical breaking system but they dont want to swap it out as its an expensive part as they want to make sure of it first... I think I am going to take it to another dealer..
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Why my Golf beeps 3 times whenever I take off from a complete stop?? No dash lights, other than ABS... The tach isn't currently working either.
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I just recently bought an R about a month ago. I am having a problem with my brakes. It seems that every time I hit the brakes and come to a complete stop my brakes scream with this annoying squeaky sound ... My car has a little over 800 miles haven't driven hard, or dogged the car just been taking it nice and smooth for a proper break in.
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Whenever I am in sport mode i shift into first prior to stopping, but when in normal drive mode the car comes to a complete stop before shifting into first is this normal???
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