Ford Transmission :: C6 Downshifting Early When Coasting To A Stop
Mar 23, 2015
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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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've noticed that when I'm coasting to a stop and my speed gets to about 27 MPH, the transmission downshifts (RPMs increase) until I reach about 22 MPH. I'm not applying the brakes at the time.
It's a bit annoying as it sometimes bleeds off just enough speed that I need to accelerate to reach the point I was planning to stop at. Is this normal?
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I am having a transmission problem. I have a 76 F100 with a 300 and a c4 tranny. When I take off it seems to be shifting out way to early. It goes in to 2nd gear at about 10mph and 3rd between 20-25mph. I do have a kickdown linkage hooked up but I have not messed with any adjustments. The is a vacuum line that runs to the rear of the transmission. Also sometimes when shifting in to 3rd it seems to go in to neutral before going in to gear.
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I am going to look at a 92 Explorer soon and the owner says the transmission is shifting early.... I'm not exactly sure what they mean by it and I haven't gone and test drove it myself yet, I'm just trying to get opinions on what to look for and hoping it doesn't mean the end soon to come for this tranny. I was thinking maybe the vac. modulator could be the issue but I don't really know much about these Explorer's, as I've only owned one for about 2 months. It's a 92 4WD.
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I recently purchased a 2012 Golf Sportline 2.5 auto. I also currently own a 2006 Jetta and 2008 Rabbit both 2.5 automatics. Both older cars run and drive great with this engine and tranny combination for me. However with the 2012 I really notice a throttle delay when accelerating from a stop and a very early shift into 6th gear when in the gear selector is in drive mode causing engine lugging. Shifts into 6'th at 60 kph doing 1100 RPM.
This I find is very annoying compared to my other two VW's which have better throttle response and shift a little later into 6'th allowing the engine to turn at 1400 RPM allowing for better acceleration without having to kick it down a gear.
I have taken it back to the dealer hoping for a ECM flash update but nothing is available from VW and my vehicle ECM has all other current settings and updates. I ve looked into aftermarket solutions such as the Sprint Booster which allows for a more responsive pedal but based on my other VW's my 2012 should not preform like this.
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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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I first heard this on Car Talk on National Public Radio (sundays at 10, on the west coast). I heard the question but not the answer. Wife favored slow and hubby fast.
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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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Drove a new 1.8T VW Passat last night. 170hp/184ftpd torque. Huge difference! My Camry feels totally underpowered now. Also the transmission seems to shift into high gears way too early. Had reprogram recall done and shifting was better for a little while but now is back to being the same as before.
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The problem is that it appears the torque converter is locking up so early even right after getting into second gear at speeds between 20km/h and 40km/h. This causes shuddering/rattling coming from under the hood. If I am not mistaken a torque converter should lock up at speeds 80km/h+. I've never seen this behavior on any car before. I'm not sure what kind of damage is being done either by all this shuddering and rattling going on with the transmission. I feel that this should be something that needs to be addressed via some software update. Is there any software update in regards to this issue?
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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 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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When coasting to a stop, I have noticed when the rpms reach 1000-1100 they jump up a little bit. Sometimes you can even feel the car lurch forward just a tiny bit. Is this normal for a car downshifting??
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My nice little 2002 GL 1.6 has 160K+ on it. Lately, when I come to a stop, I get a thump when she downshifts. I don't know which gear exactly, but it happens when the car reaches 10 MPH and below, so maybe when it goes into first? It is just as the car stops, it seems.
More recently, it seems as if when I get just about stopped, it feels as if she completely disengages from drive and goes into neutral. But it doesn't actually do that, she is fine when I take off. She upshifts just fine, it's just that last little bit when coming to a stop.
I have never had the transmission messed with very much, but I know it was serviced a few years ago. I did add a little fluid a few weeks ago after I checked it, and I was very careful to purchase the exact correct fluid.
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We have a 2010 Tiguan SEL 4 motion automatic and today it just died after i pulled out of parking spot. the only light on the dash was the battery light. I restarted once i put it in neutral. When driving home my wife and i notice it was not downshifting when going down hill or when coming to a stop. This is not the usual behavior. It also seemed like it was costing in neutral when i was not in the throttle. I dropped it off at my usual dealer and hopefully they can duplicate it.
I am wondering if the battery or alternator is bad and the transmission computer was not getting good voltage and that made it act funny.
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I have a 2004 F150 XLT SCAB 5.4L 3v Fuel that I drive Daily, it has 280,000 miles on it. While driving to work (70mph) my throttle became unresponsive and it felt like the transmission was downshifting. Made my way to the edge of the highway and placed truck into Neutral, then the engine quit. Tried restarting at which point would not fire. After letting the truck sit (while waiting for a tow) I decided to try to start it. The Truck did start and ran for only about 2 minutes and then quit. The Tow truck finally arrived and I tried to start again with the same problem occurring, stated and ran for about 2 minutes (no throttle response) and died.
Got the truck home and decided to remove the Fuel line from the filter to see if there was fuel flowing, which there was none and no pressure. Replaced the FPDM with a new one, old unit was corroded but not cracked (replaced it once before). Tried to start and would only crank with out any fuel flowing (still had it removed from the filter). Thinking it may be the Fuel Pump but have to drain the tank being that I just filled it this morning before it died. The problem is, how to drain the tank before lowering it if the Fuel Pump is not running??? What the Problem is or how to test Fuel Pump or drain the Tank?
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I recently overhauled a 5r110w torqshift in an 03 F350. The trans is acctually an 06 trans. The original problem was that the truck was "tieing up" on take off. When i tore the trans down i found the Low/Reverse clutches were burned bad and welded together. Everything else looked decent. I replaced all the clutches and checked all the clearances, except the OD clutch because i could not find any specs, or a way to adjust it. The trans has been doing good for around 200 miles. Now it has an intermittent problem.
When you first start the truck its like the converter has to fill up. It has a delayed engagement, but only AFTER you shut the truck off. Also, after driving about 10 miles, sometimes it will feel sluggish. I put my Solus Pro on it and while watching the trans data noticed that the transmission is not downshifting all the way int first gear at times. It will down shift, and then try to take off in 3rd and sometimes 5th gear. I was looking thru my ATSG manual and i can see which clutches turn in for 3rd. It seems like a solenoid is sticking on and allowing fluid to "leak" and keep the wrong clutch turned at the wrong time.
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I'm stuck in a bad situation. With my work schedule it will be literally a month until I have time to look at my car during daylight. I may be able to drop it off next week.
Anyhow, the R is making a horrendous high pitched noise while coasting to a stop. This starts at just under 30 mph and is most pronounced in neutral. Accelerating in gear stops it. It is loud inside and louder outside and there is some rough "clanking" associated with it. My guess is a belt or bearing. It is coming from the front passenger side.
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i drained the 30000 mile fluid two weeks ago because it was harsh downshifting when coming to a stop... I was curious if others noticed a lot of metal sludge sticking to the magnetized drain plug???..
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