Elantra MD (2010-15) :: 2011 - Tranny Slipping Slightly While Accelerating Up To Highway Speeds
Jul 18, 2016
Took car in for normal service (69,000 miles) and had Tranny Fluid Service completed. When I took the car home I noticed some slight tranny slipping while accelerating up to highway speeds (so assuming 4th to 5th gear, maybe 5th to 6th). Took it back to the dealer and after a week it had a new transmission. Took it home and it slipped again, also only accelerating to highway speeds. Took it back and they told me they reset the computer that monitors my driving patterns. OK, not exactly sure what that means. So, now driving to work this morning it slipped (or maybe hesitated is a better word) again when accelerating from about 55 mph to 60 or so. Car has never had issues like this before, gas mileage is still in the 30 mpg range.
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I recently purchased a 2015 Elantra a few months ago and I have noticed a couple times now that when I'm driving along and hit the gas when I'm trying to pass someone or speed up in a hurry that it just revs high but doesn't catch until it revs back down. Is this a normal thing these days or could it be a problem? It's an auto. Also the other day I had the window down and I heard ticking noise sounded like it was coming from the front left but it followed my speed. Hit the brakes and it didn't change but it slowed down when I slowed down. Then I turned and it stopped and haven't noticed it since but I haven't really gone too far.
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I'm experiencing a serious problem with the tranny on my V10 TDI: When the engine's warmed up it sometimes starts slipping and generally keeps on slipping, even when cruising on the highway, until the engine is cooled off again. In thread [URL] .... I read something about a "faulty solenoid valve inside the tranny". Could this be the cause?
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Just got rid of my 2011 Audi a4 for 2012 Elantra Limited with tech pkg. I like the car a lot but man is it noisy at highway speeds. Really makes phone calls and radio listening difficult.
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I have a older minimax with the latest updates and have noticed that under full acceleration the tranny seems to rev up faster than the truck is accelerating. This occurs i think in 3rd gear like accelerating onto a on ramp etc. Kinda like its slipping if you know what I mean. I'm running the mild tunes in tow mode. Everything else seems ok.
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Noticed the steering wheel shakes just slightly at highway speeds. Happens to me when I'm at around 65-70mph and above. It's just very slight, so I really wasn't thinking its an alignment issue at all. I didn't know if this was a bit normal for these B7s or what. I've had alignment issues in cars before and this just doesn't feel that bad, but its enough to give me pause.
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Currently have 85k miles. About 20k miles ago I noticed when I have the driver window down I would hear a rattle coming from under the car when accelerating. Doesn't happen every time but does quite often. Usually goes away almost immediately. I'm not having any other issues and with my warranty out I'm not anxious for a drip to the dealer.
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My S10 started downshifting at highway speeds when I slightly let up on the throttle. It only starts after driving 20 or 30 miles down the road. (gets hot?) It also hesitates slightly starting from a dead stop as well after that. I dropped the pan, cleaned it up and added new fluid. There was a fine powdery sludge on the magnet in the pan, but no metal shavings. It is still doing the same thing.
It has 95,500 miles on it. 2.2 motor. The fluid was low a couple weeks ago. I added a bottle of conditioner. Don't remember the brand name. 2 reservoirs in the bottle so it mixes as you pour it in. It started acting up 7 days ago.
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Got a strange one here. 1995 Buick Park Avenue, supercharged 3800, 159K miles... an older car, but an unmolested one. A little over a week ago I began to notice an occasional miss when cruising along at highway speeds, along with a slightly rougher idle. Both the fuel filter and the plugs/wires predated my ownership of the car (a little more than 6 months); so seeing no obvious culprit, I replaced them and hoped for improvement.
Unfortunately, neither had any impact. The missing continued to become more noticeable. It was never present under acceleration. Most of it was like a split-second long version of "bucking" that could be observed while cruising at lower (<2000) RPMs. It was also very noticeable at idle. Eventually a code was set: P0341, camshaft sensor issue. If the story had ended there, it would have been just another night in the garage. But it didn't.
As I was noticing the aforementioned symptom increase, I also noticed my voltmeter would occasionally "twitch" in the downward direction. Eventually I had an incident where I came to a stoplight... transmission in Drive, foot on brake, gauge dropped to around 10-11v. It returned to 14v momentarily, but dropped back down, held there for several seconds, returned, etc. No particular rhyme or rhythm. Of course my first guess was that the alternator was failing; a separate problem from the other.
I checked all the relevant connections (at the battery, at the alternator, etc), and cleaned them for good measure. All were tight, relatively clean, and the cables showed no resistance on the ohmmeter. It happened that I had another correct alternator on hand (used/working pull), so I swapped it in. No change. I reinstalled the original and was back where I started.
On my most recent drive, I noticed both issues had become very noticeable. The drop in voltage was happening at nearly every stop, and the missing was happening a few times per minute while coasting along. There seemed to be some correlation between the missing and voltage fluctuating, but it wasn't absolute.
I decided to attack the voltage issue again. Re-checked all the cables; same result as before (all OK). Looked all over the car for possible bad grounds, loose connections, or other visible problems, but found none. My next thought was to run a jumper from B+ to the voltage regulator's Sense input (have seen issues there on more than a few older vehicles) - but after reading that this car uses the PCM as the voltage regulator, I didn't proceed.
Just to be certain I'm going to have the alternator tested by the local auto parts store. But I suspect it'll pass.
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Heard a 2011 F250 gaser while driving in the morning just falls flat on its face, almost like its starving for fuel as well as it feels like the tranny is slipping too. What this could be? I am not sure if its electrical or what.
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I've got a 2002 Toyota Camry with 96,000 miles on it. Car has been running fine for years but on a recent 250-mile drive I noticed a whirring noise (almost like the engine of a remote-control electric car). The noise is faint, but definitely new. I'm fairly sure it's coming from the under the hood, or at least from the front half of the car. No vibrations. The noise is only audible at highway speeds, and really only present when I'm accelerating (or on cruise control). It seems to get slightly worse if the car is climbing a hill.
Some things that have been worrying me:*I left the car in a friend's driveway all summer. Could that have anything to do with it? (There were no noticeable problems when I got back, which was months ago--when I came back after two months, I simply re-connected the battery and the car started on the first try).*I had a transmission fluid change about 2K miles ago. It was at a Jiffy Lube. They "flushed" the old fluid. They claimed they used the correct Toyota brand fluid. (I've since read that flushing the old fluid can be a bad idea for older cars.) Could this have something to do with it?*I just had my snow tires put on two weeks ago (and this is the first long drive I've done with the snow tires on). The guy who changed my tires took about 2.5 hours to do the job, saying "this is only his second week." The car is steering fine, and not drifting or anything, but could that mechanic have done something to the tires that is causing this highway-speed, acceleration-only whirring noise?
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I have a 2005 Toyota Corolla XRS with a manual transmission which has developed a shudder. When this shudder started, it only occurred when accelerating at highway speeds, or maintaining highway speeds. Now it happens at lower speeds if I give it gas without downshifting, but at reasonable RPM, 3000-5000. I cannot feel the shudder in the steering wheel, but the whole car shakes, and it definitely feels like it is coming from the front end. I have had the tires balanced and rotated. I also have replaced the IACV and MAF due to a CEL. These were replaced after the shudder started. For a few days after the replacement, the CEL returned, but now I am no longer getting it.
There are no visibly obvious issues with the suspension or the drive shafts or CV joints, and the motor mounts likewise look okay. I am not getting a CEL of any kind, and I replaced my plugs 6 months ago, but I pulled them anyway, and they are not fouled. I don’t think the issue is in my suspension, steering, or wheels because I cannot feel it in the steering wheel. I don’t think my half shafts are warped because the shudder happens at varying speeds, and the instant I let off of the gas, it stops. Though this doesn’t rule them out completely, there is no clicking from the CV joints. When I brake, the car slows smoothly, so the rotors are fine. I have run injector cleaner a couple of times, and octane boost once. These both seemed to solve the issue, but did not make it stop, and it has gotten worse lately. My wife did put low-octane gas in the car once, but it was weeks ago.
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My '01 Aztek has a very odd shimmy. It only happens when turning right, at highway speeds, and when accelerating. Not when turning left, and not while just 'coasting'. Only when accelerating.
The mechanic replaced a tie rod end, and that seemed to fix things for a few hundred miles. But now it's back and is happening at lower speeds.
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The last couple of days I've noticed a strange sound that come on under boost accelerating at highway speeds. It's a harsh ssshhhh sound that rises in frequency with engine RPM, sort of between a wood lathe and a bench grinder. happens under mid to WOT. It almost seems like I am loosing a little HP as well but I can't confirm that. It's loud enough to hear it in the cabin and with the windows down I can definitely hear it. It's not really fluttering, that I'm used to being on my 3rd tuned 2.0T
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Just bought a 2010 Prius with 48k miles. I'm noticing what feels like a slight slipping when rapidly accelerating, or that's what I would call it in any other car. It's barely noticeable, and my only concern is if this is the beginning of a transmission issue.
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Have a 2008 Elantra GLS with 63K miles. A/T was serviced by dealer at 51K. Car now occasionally downshifts from 4th to 3rd when driving between 60 and 70 mph. Happens only when trans is hot (after 2-3 hours on hiway). When it occurs, it searches for the right gear, going back and forth from 3rd to 4th for several minutes before returning to normal. One thing odd is if I shut the car off for 5 minutes after it occurs, it runs fine afterwards. Do I need an ECU update or do I have a A/T problem?
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The wife and I own a 2003 Hyundai Elantra with 163k miles.
We just had our oil changed and we are currently running 5/30 and the oil light came on about a week after the change. I stopped the car immediately and checked the oil level and it was fine and oil was super clean. So I jumped back in the car and the light was off. Drove down the road about 2-3 miles and the light came back on and stayed on. Today it stayed off for a good 5-10 min while driving at highway speeds of 55-60 and then it popped on. The car runs great and it's not running hot that I know of and doesn't sputter or anything.
I was wondering if it was a bad Oil Pressure Switch? Where are they located at in the motor? I just put 1k into it with new new belts, valve cover gasket, spark plugs, wires and tires.
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My daughter just bought a 2106 Hyundai Sonata Sport loaded. Within one week of driving it she noticed a lot of front end vibration at highway speeds. She took it back to the dealer. They test drove it and figured it needed an alignment. It didn't fix the problem. Hyundai corp was notified and the gave permission to put on 4 new tires in case there was damage from the original wheels sitting. Still has not corrected the problem. They have one more try before I demand lemon law and require a new car replacement.
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Two years ago a purchased a 2011 Nissan Frontier mid-sized pick-up, V-6, A/T, 4WD, long-bed (6’), crew cab four door. I drove it for a little over a year and it was all good, then I put an 800 lb. pop-up cab-over camper on it. When folded down, the top of the camper is about one foot above the top of the truck cab, with about a four inch space between the bottom of the cab-over and the top of the cab, and with the cab-over extending over the back two-thirds of the cab, so the whole thing creates quite a bit of wind resistance.
After installing the camper, I noticed a front-to-back jerking motion when driving the truck at highway speeds, sort of like when topping a steep hill and beginning to descend, some vehicles will lurch front-to-back until the drive train synchs up. It was cyclic – jerk 7 or 8 times, smooth out, then do it again. It wasn’t bad enough to cause vehicle control issues. I took it to the dealer and the initial diagnosis was that the automatic trans. was going in and out of lock-up. Then I drove the service manager around in it with his laptop scope plugged in to the engine, and he said he couldn’t see anything wrong with the drive train. He suggested running the rear tires at maximum pressure of 44 lbs., which I tried but which didn’t work.
I then had airbags installed to beef up the rear suspension, but that didn’t work. Finally I built a fairing/wind deflector and installed it on top of the cab, sloping at a 45 degree angle from the trailing edge of the windshield to the leading edge of the top of the camper. That didn’t work either, which surprised me because I had first experimented with the concept by duct-taping a sheet of cardboard in the same position as the fairing would ultimately be installed, and that seemed to work. The same jerking sensation can be felt when overdrive is engaged and when it is locked out, and it also occurs at slower speeds when decelerating. Is there anything I can do to smooth out the ride?
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I have owned this car from new and it currently has 32k miles. The only fuel used has been 85 octane or occasionally a tank of 93 octane. There is a distinct hesitation when accelerating from speeds of 10 to 15 mph and I do not believe it is due to the transmission shifting. I did move to my current state,California, from Pennsylvania and was told by my local Hyundai dealer service department that because California has a different gasoline formulation from most other states as well as a summer and winter blend to reduce emissions it is recommended to run a bottle of injector cleaner every 15k miles.
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My 2007 Hyundai Elantra SE (Automatic, 69,400 miles) makes a grinding noise when I start to accelerate from 40 mph. I sometimes hear a noise that sounds like an airplane wheel being activated when I'm driving at lower speeds driving around town. Could this be the transmission? Who should I take the car to?
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