IS F (2008-2014) :: Transmission Downshifts Automatically To 5th Gear
Jun 2, 2016
I've noticed lately in auto mode (not in sport mode) when I'm going downhill on a section (doing maybe 45-50 mph) of road and apply the brakes, the transmission wants to downshift automatically to 5th gear. I know in Sport mode if you are not using paddle shifters this seems normal. I don't think this is normal in just auto mode, non sport.
I don't think mine is normal as I don't remember it downshifting this much in auto mode. I'm thinking fluid level needs to be checked. I know there is a sensor in the transmission that senses the angle of the car so not sure if it's being overly aggressive or not.
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I have a 2004 Dodge Intrepid. Here's the deal. When I drive on the highway (higher speeds) and then slow down, the car (automatic transmission) automatically downshifts drastically (like throw me through the windshield drastically) and then will not come out of that lower gear.. UNLESS I turn off the engine and restart it, THEN it fixes itself (took me a while to discover this). When I am driving around town at lower speeds this does not happen. Only if I get to higher speeds and then slow down. And one other symptom...SOMETIMES I can just be at a stop light/sign, still in drive, but when I put on the gas to go, it stays, like the car is in neutral, even though the gearshift is still in drive.
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We have a 2007 Limited that we love everything about except the way the transmission downshifts to first gear when it seems to me it should stay in second. My inlaws have a 2007 XLS and it doesn't do this. This is our third Avalon and the only one to do this. The dealer we bought from says this is normal but I strongly disagree. Is there a service bulletin on this or what else can be done.
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I have a 2008 ISF at 41k miles. In stop and go traffic, or starting from a stop and driving causally ( not WOT or even medium throttle) the car will rev up before going into 2nd. It is like the feeling of rolling over a speed bump.
Also in normal or sport mode in D ( not M ) if I WOT , you can feel it jerk before taking off. I don't know if this is normal or not...
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Ok I have been trying to find out what is going on with my truck and I cant seem to find anything on here that points to all the symptoms I am having. I have a 05 xlt 4x4 with 5.4. For the last 5 months or so I have been noticing a slip or grinding noise when I go up a hill and it downshifts into I believe 3rd gear. It sounds like going over rumble strips on the road but only lasts a second. It also does it sometimes when I pull out from a stop.Also when I let off gas or brake to a stop it seems to shudder a bit.
Maybe its my imagination since I keep hearing for the grinding sound, I don't know anymore.Its driving me nuts(er). It doesn't do it all the time either.It has only 65,000 miles on it and never towed. I know I am due for a total tranny flush since it never had one. Could this be the whole problem? Iv been reading other stories that sound close to mine but they never mentioned about the noise when pulling out. Could it be the rear end? I am totally lost on this one.Other then that problem it runs great. Shifts nice.
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this has been an outstanding van, quite reliable. it has about 115,000 miles on it. Recently, I've noticed that the transmission makes a 'tapping' noise when it shifts or downshifts. every gear has that same slight 'tap'. the tranny shifts fine, smooth, but this sound worries me a bit. any chance this could be a u-joint issue?
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So i have a 2006 3.6 Passat, and when starting from a standstill, the car lags before it actually starts to move. i have to wait over a second for the engine to actually rev once i put the pedal down. the car is also very sloppy when automatically downshifts. I am thinking it must be a problem with the ecu, but i got the car checked out to address this problem but the mechanics couldn't find a problem.
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I've always wondered why the transmission automatically shirts to 4th gear when I switch to sport mode! Is this normal??? It's an i4
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VW says I might need a new clutch. I have 85k on original. When are your clutches going? Do I need to change the dmflywheel as well?
i thought it might be a bad synchro. It only does it when warmed up and on downshifts. I can let the rpms drop all the way down before shifting and it will grind. rev matching i think still grinds. wont do it cold.
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When I first got my Accent a few weeks a go I thought this car just had unique braking functions with the ABS valve, but after driving it every day for a few weeks I think that perhaps the problem is the way the car downshifts.
Whenever I am braking and the car downshifts to 2nd gear at around 25MPH I feel the engine bog down, almost as if you were downshifting at too high of an RPM. However it only happens if I am braking slowly, when I need to brake harder I don't seem to notice it, either because it doesn't do it or because I can't feel it over the more pronounced forward momentum.
I verified that it does seem to be the engine or transmission, because if I brake with the car in neutral it won't do it. So my question would be is this just a normal function of this car, or should I take it in to be checked out?
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Having downshift problems? The dealer has "flashed" the software 3 times and the hesitation still occurs.
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I am getting to the point with this car that I can't stand driving it This thing where the transmission downshifts as I slow down and come to a red light is the most obnoxious feeling I've ever experienced in a car. What's worse, is when I go to speed up again and it's in the middle of one of its downshifts and hick up so bad it feels like it's can fall out of the bottom of the car. I'm done trying to deal with Toyota dealerships, all they do is tell me that Toyotas don't have transmission problems and that my car is fine unless it kicks on a light.
I feel like if this transmission was reprogrammed to act more like a normal transmission Like the electronically controlled transmission that was in the 1995 Alexis that I sold a few months ago, or my wife's 2006 solara or the 2008 I asked to 50 I used to have, the car would be fine. But this thing is neurotic, jerky, and unpredictable.
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My girlfriend has a 2007 Volkswagen Rabbit, and she said that occasionally when she slows down as she's getting off the freeway her car downshifts from third to first really quickly and she's concerned. She took it to the dealer but, of course, they couldn't tell what was wrong because it only happens on occasion. They said it might have something to do with the brakes pumping if she slows down too fast. The car has 60,000 miles on it.
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My 2011 toyota tacoma auto transmission downshifts on any slight decline, even to the point of losing traction in the rear end if I am on slippery pavement. How can I disable the electronic engine brake?
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I bought a 2003 Jetta with a 5 speed automatic transmission (09A tiptronic) but it upshifts and downshifts really bad, it doesn't matter if it's cold or warm. After reading a lot of posts in here I thought that what was wrong with the car was the valve body on it, so I bough a re-manufactured valve body and replaced the old one. When it was in the shop I was told the wiring harness was burnt/fried so they replaced the harness too. I got the car back and it still does the exact same thing, so I don't know if the transmission is bad or maybe it can be a bad TCM. What could be wrong with it?
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My 2004 VW jetta has 139k on it. Whenever I come to a hard-ish stop or almost-stop, the transmission downshifts to 1st and won't get out of it unless i play with the tiptronic mode selector and coax it to upshift. it shifts well and works well in gingerly driving other than in this circumstance. i took it to a shop and they say (as they always do) it needs a new tranny. I'm wondering out loud if there is some kind of mounting instability issue that could explain this. This is definitely a case of needing a new transmission. I have read a bunch about solenoids being the culprit in general shifting problems, but not this exact set of symptoms and circumstances.
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2012 2.5 SE Auto 53,000 miles ... A few days ago I started getting very hard downshifts and long upshifts. The downshifts were hard enough that the person at the dealer didn't make it out of the parking lot on the test drive. Most noticeable from 3-2 and 2-1. 1-2 is hard and 2-3, 3-4 and 4-5 take a few seconds to happen. No lights or limp mode.
In recent months I was getting a thump about a second or two after coming to a stop. Enough of a thump that the car would move forward if I didn't have my foot firmly on the brake. They flashed something(the ECU?) claiming there was a TSB for my complaint but it didn't seem to make a difference. I bought the car with 40,000 and the trans never felt right to me. I had them change the fluid just before 50,000 so they couldn't deny a claimed based on failure to maintain.
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If I understand correctly my 2004 Expedition has the 4R75E transmission. We are experiencing a clunk upon acceleration when the truck downshifts from 4th to 2nd. I had the fluid & filter changed, flushed the transmission with cleaner. It still does it but not all the time. I turned OD off and I didn't notice the problem when shifting from 3 to 2.
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2001 expedition, 198,000 miles. Got p0781 code ,1-2 shift error. replaced the accumulator valve with a factory tech valve body. Pan was clean, some gray material on the magnet but not bad. 1-2 worked fine after vacuum swap, but when trying to shift from 2nd to 3rd gear, the transmission downshifts hard all the way to a stop, like the brakes are on.
I can manually drive in 1st and and 2nd but when I put it in drive it will downshift/brake instead of shifting from 2nd to 3rd. pulled the main valve body and 2-3 and 3-4 shift valves seem good, no sticking. 3 other valves were sticking. i think they are the Solenoid regulator valve , and coast clutch shift valve, and low/rev modulator. Could they be causing the hard downshift/braking?
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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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Car is a 2001 Accent 1.6L 4 door automatic with about 130,000 miles on it.
Transmission shifts correctly into reverse, drive, neutral as well as manually shifting into 2nd and 1st. When in drive I will accelerate perfectly through 1st gear, shifts smoothly into 2nd gear then the problem arises. The car will shift ok into 3rd, but if I let off the gas to coast to a light or a corner, etc, the transmission physically downshifts or locks up in 3rd (like driving a stick, ie the car has drag like the converter is locked instead of freely coasting). It feels like 3rd gear but could be 2nd. When I go to accelerate again without coming to a stop the car has this same feeling of drag with no power and speeds up very slowly (almost like i am pulling something behind the car or am in a gear that is too high). If I give it enough gas to force a downshift it really slams that downshift. While the car accelerates through the rpm range after this downshift it will rev past the normal up-shift rpm until it finally slams into the higher gear. Or if i hold the gas steady at the higher rpm the car will suddenly slam into the higher gear. after all of this nonsense the car drives perfect through to OD. The problem is much worse going uphill and is consistent every time it is driven.
Also, sometimes the car would shake and vibrate when hitting the gas during this "drag feeling" until i let go and did it again. This is pretty random compared to the main problem but also seems to happen while the car is in 2nd or 3rd. This has been happening for about 5 months now and as far as i know was sudden. And on another note it suddenly was shifting fine the other day while driving it. I haven't driven it since then but this completely stumped me, as most problems will do when they magically disappear.
There is no check engine light, OD works fine and the car does not go into the safety mode where it will shift to 3rd gear on the highway. It's city driving that is the real headache (2nd and 3rd gear difficulties). Would the pulse generators cause this? bad TCM? i haven't scanned anything yet but will be within the next few days(at pep boys or similar) as well as ohming out pga and pgb. i have found resistance readings for pgb but nothing for pga, what should pga read? fluid is also within acceptable amount and color.
My initial thoughts were dirty or stuck solenoids/valves in the valve body and i was going to do a filter and fluid change with a quick valve body cleaning and check. But after researching on here I am starting to think it may be electrical. The only reason I put my scenario up is because it seems that everybody else who is having a similar problem is also having the "no reverse" or "shifting into 3rd on the highway" problems while i am not. On a random note, for my own piece of mind, how do the pulse generators work? Are they just reading ticks on a gear cog in the tranny or something? fluid flow?
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