GS 2006-11 :: Trans Having A Downshift Clunk / Jerk When Coming To A Stop
Feb 22, 2015
Or just can I just replace and go. I'm having some issues with trans on my 06 gs430. It's having a downshift clunk/jerk when coming to a stop. I just purchased a used trans, but would like to see if it could be ecu related. I have seen other comments from other member that they replaced the trans, but still the issues were present. Some stated that there was some issues with the ecu holding the trans solenoid longer then the usual.
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I am the new owner of a 2007 Lexus GS350 and I absolutely love the car. 70k miles and it has been well taken care of by the previous two owners. The question I have is regarding a strange subtle jerk when coming to a stop. This seems to be the most intense with a medium force stop but I can also feel it when coasting to a stop. It happens frequently and sometimes is less harsh than other times. I noticed it right after picking up the vehicle but I didn't really pay much attention. After driving the car for 2 months I notice it more. The jerk seems to be happening during downshifting and is at about 15 mph every time. It's not extreme but passengers typically notice it if I point it out. Then they can feel it every time it happens. The other shifts are smooth including accelerating and so forth. I reset the ECU (pulled the ETC and EFI2 Fuses) about two weeks ago but haven't noticed a difference in shifting.
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I have a 2003 Camry LE with 1MZ engine and U151 5 speed auto trans. 138,000 miles The problem is that the trans makes a very noticeable downshift clunk when stopping.
With light driving you can feel what seems to be a 2-1 downshift just before stopping. With aggressive driving and rapid stop the clunk is felt either when stopping or actually after the wheels stop turning depending on speed and hard braking. If you stop aggressively it actually feels like someone hit you from behind. It literally shakes the car.
TRANS FLUID is full and clean. There is no smell or burnt appearance. The trans tests good in forward and reverse stall tests. Neutral to drive/reverse engagement is also quick and firm.
Here is the fun part. The condition does not exist when cold. After the engine and trans warms up it starts happening. Also, after presenting the condition with a hot trans, I can shift it out of drive and into 3rd and have no problem at all no matter how I drive. To make things more interesting, I can erase the trans learned values with a scan tool and the trans shifts normally for a couple of days before the condition returns.
We are concerned that there may be damage done if this condition continues.
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Lexus IS350 ... Noticed a reasonably quiet clunk from the car when coming to a stop? It happens when the transmission automatically shifts into 1st gear with your foot on the brakes.
I noticed that in my car, you can feel a slight lurch forward as the transmission downshifts into first when approaching a stop sign. If I am barely on the brakes, I feel the slight lurch but don't hear anything. Under normal braking, that slight lurch happens along with a clunk. You wouldn't hear it with the radio on, but it's very repeatable and with the windows down you can hear it as well coming from under the car somewhere.
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I don't do too much long range driving but i notice about a week ago i was driving about 70mph for about 40 to 50 miles.. and when i got of at the exit i started to slow the car down and during the down shift i felt the car to a little jerk and clunk with a bit of hesitation during it.. Today i was doing another long trip and it did the same thing..
i use the highway a lot but usually on it for maybe 5 to 10 miles and it never does it.. I called the dealer and explained it to them and he said he would have to drive the car. and i know since it only happens on 40 plus mile trips the dealer isn't going to go for a test drive that long..
The next long trip i have might be tomorrow nite headed to AC for some gambling so i am going to try to remember to bring my camcorder so i can try to record it for the dealer..
car is a 07 wolfsburg 2.0t automatic completely stock..
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I have a 2010 S with an auto trans and 68,000 miles. I've never replaced the fluid or filter. Over the last 10,000 miles or so, I've noticed the following in regards to shifting.
I will being on a merge ramp to the highway rolling along and waiting to pull out into the flow of traffic. I'll be traveling along at a constant speed, say 30 mph, with constant pressure on the throttle waiting for my opening in traffic. I will see my opening and floor it. That's when (sometimes) the car seems to get very confused. It doesn't shift back right away, it lingers in 3rd (or OD) and picks up a tiny bit of speed. Then, it hesitates with no acceleration, and then roughly shifts to 2nd or 1st. It feels more like it forces itself into gear and, once in gear, it accelerates like it should.
The biggest issue for me is that this whole process takes about 3 or 4 seconds. That's not very long, but when you're trying to merge onto the highway or cut into traffic, 3 seconds is the difference between being safe and a close call.
Transmission fluid appears to be full, is a nice red color, and doesn't smell burnt.
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My 2009 Sonata (4 Cyl.) has begun to downshift very rough while coming to a stop from about 20 mph. At first I thought it was the brakes, but now I'm convinced it's the transmission. Essentially it "jerks" a couple of times before stopping. It started happening at 30,000+ and only happens when transmission is still cold. Once I've driven for a bit it doesn't happen.
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I have a 2009 2.4/auto with 32000...original owner...just noticed a weird tranny issue develop over this past cold week in NY...when coming to a slow stop the trans will harsh shift as it down shifts from 2 to 1...
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2003 F150 XLT 7700 4x4 5.4 Triton. While accelerating normally from a stop the transmission? shifts into 2nd with a heavy jerk. All other gears normal. It doesn't do this under hard acceleration or under very gentle and slow throttle application. Is this a COP issue, a transmission issue or just a driving style thing?
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My 2007 Sonata V6 limited would produce a pop / clunk sound (sometimes 2-3 in succession) under these circumstances
- Car is coming to a stop (brake applied)
- When I release my brakes, press on the accelerator, a pop / clunk sound would ensue
It doesn't happen all the time. I noticed it's more prevalent when it's hot outside or when I've driven the car for a little bit
My mechanic re-tightened the subframe bolts and visually checked bushings / ball joints but everything seems tight.
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My truck is starting to shift strange. As it warms up and I'm in drive, it will shift between drive and 2nd by itself. When I pull up to a stop lite, it's like it's stuck in drive and doesn't downshift. Ultimately it dies. I've checked my fluid and its fine. Any ideas? Oh and my engine light is on. Can a parts store find the code for the issue I'm having?
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Dad has a Hyundai Accent that hasn't had the best service history. After discovering this I started doing minor stuff (oil & filter, spark plugs, etc) on the car. The car has done 119,000km and about 2 months ago I decided to change the auto trans fluid and filter, I don't think its ever been done before and the fluid was pretty bad. I followed the tutorials exactly and everything was fine until yesterday. It seems the car get stuck in 3rd and downshifts badly when coming to a stop. When I last drove it I got home and quickly opened up the hood. I could see smoke coming from somewhere near the trans and there was a bad smell. We haven't driven the car since and I don't know what the problem is. I've checked on google and some people have used a scanning tool to get the error code, but the car doesn't throw a check engine light so will the error code be there?
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Well, After reading about the weird transmission issues these cars have...mine finally started to do it. It will clunk, shake the car when it shifts and downshift for no apparent reason. All of this does NOT happen all the time. The noises that come from my transmission do though.
I can have the car in Drive and have my foot on the brake and I can hear a grinding/low power steering fluid like sound that comes and goes. Its worse when I shift from Park to Reverse though. It sounds like air being released followed by a bunch of faint grinding noises.
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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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This last month I have been noticing that either when I am coming to a stop the transmission down shift hard.... and when moving from a stop it gives two bucks like a standard does when u let the clutch out to fast... so i went into do my oil change and asked them to look at it.... guess what its getting a new tranny..... makes me want to trade it in when i get it fixed....
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I have an intermittent issue where the tiggy seems to downshift harshly to 1st when coming to a stop while in D. Almost like dropping the clutch but not enough to chirp the tires - just enough to feel a thump. I figure it's related to the engine braking "feature" of this car but doing it incorrectly. It seems as though once it's happening, it stays like that for a while, but the next day for example, it will be fine.
I've been observing it for some time now and it doesn't seem temperature specific. In fact, I have a hunch it might be electronic even since if I turn off ESC it stops occurring. Turning off brake auto-hold doesn't make a difference either (this is turned off automatically if ESC is shut off).
I hate taking my car into the dealer for intermittent issues... they are notorious at dismissing something if it doesn't happen right then and there in front of their face. Thought maybe I should check the forums incase their's a TSB or something to fix this exact issue or if it's just unique to my tig.
2010 (build date 8/09) 4motion SE btw, w/ 5k miles
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I recently purchased a 2005 Camry XLE V6 (100K miles). Its in great condition and no issues except I am observing this:
-> When I come to stop (like at a stop sign), just before coming to complete stop, there is a slight forward jerk. When I come to stop slowly and smoothly, there is no problem.
the faster I come to stop the more severe is the jerk. I tried to search for answers on the web, one possibility is bad solenoid in the transmission.
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Had a slight shutter or jerking feeling in their LS, sort of like the rotors are warped, when they slow to a stop from 40+ MPH? I just cannot make the car stop smoothly no matter the amount of brake pressure I apply.
I can 100% eliminated the issue if I shift the car into neutral before I slow down. So it has to be the the transmission not downshifting smoothly. Done it from day one. I even replaced my rotors and brakes so I know that isn't it.
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Car that would go clunk after coming to a stop. (don't recall the type of car) It sort of reminds me of what my car will do on occasion. Sometimes after coming to a stop for a few seconds my car's A/C compressor will kick on, kicking up the idle speed of the engine. From time to time I can hear my rear brakes grabbing harder as the car attempts to move forward because of the idle speed increasing. Could be that's what he's hearing also.
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I'm getting a CLUNK when coming to a stop with my truck.
If I shut off the overdrive while coming to a stop it doesn't do it. Or if I manually shift it down a gear.
I read on here it could be a U-joint or the yoke or something and maybe something needs greased.
Anyway I crawled under the truck and it looks like I need a special socket to remove the 4 bolts holding the driveshaft to the rear end.
What type of socket it this? No grease fittings on my U-joints. What's causing this CLUNK as well?
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I have 2010 Sonata with 4 cylinder engine and 50,000 miles. For a while now, my car has a real hard downshift at around 20mph. When i put the car in shiftronics mode and do not downshift manually, at the 20mph hard downshift the car is shifting from 4th to 3rd. A while back i had the TSB for hard downshift and also did a tranny fluid flush. Neither has seemed to solve the problem.
Also, the car has a annoying electrical hum/whine that is coming from the engine bay. When i shift car into neutral the hum/whine goes away. Also sometimes when shifting into lower gears the hum/whine will go away for a short period of time.
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