Elantra HD (2006-10) :: Automatic Transmission Shifting Rough

I have an automatic 2010 Elantra Touring and I drive 115 miles a day (4 days a week) with it (currently have 38K miles). Part of the drive goes up over an 1100 foot foothill, so I change elevation of about 800 feet on the drive. Over the last two weeks, I have noticed the transmission shifting a little rougher and at higher RPMs (everywhere and not just going up the hill). The transmission fluid level looks good, but I am wondering if I need to change the fluid and filter? Or is there something else I need to look at? I need this car to last another three years and want to make sure I take care of it right. Currently every 3500 miles I change the oil and rotate the tires, but I am just not sure about the transmission.

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Elantra MD (2010-15) :: Shifting Very Rough - Transmission Fluid Check

Recently changed the transmission fluid in my 2011 Elantra. Used the fill plug to check fluid. Small steady stream was coming out. Closed it up and took it for a ride. Was shifting very rough. Put more in and it felt better. Was wondering if there is a better way to check the fluid? I've heard that the dealer may have a sensor, is this true?

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Elantra MD (2010-15) :: 2013 - Transmission Failure / Shifting Very Rough Through Most Of Gears

Well something I never thought would happen with only 14,313 babied miles on my 2013 silver Elantra. I was driving home from my mothers house and I thought I hit a pothole, next I stopped at a stop sign took off and it started shifting very rough through most of the gears. I drove it around for 30 minutes and it was pretty bad. I decided to get it towed, I don't feel like breaking down in it.

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Elantra XD (2001-06) :: Rough Shifting Between Gears

My car is a 2002 Hyundai Elantra with an automatic transmission. It was bought with about 79k miles on it and currently has about 94k miles. Last week I began experiencing rough shifting between gears. My CEL had been on for a few months but I wasn't having any performance problems so I ignored it. When I started having shifting problems I went to autozone to have the codes scanned. All that came up was P0441. I cleaned the purge valve and cleared the code. The CEL stayed off.

I continued driving and having shifting problems. The car slipped out of gear when it wanted to upshift. The engine revs until I release the gas. Once the rpms drop low enough the next gear would engage. This seemed to happen for every gear shift except 1-2. For my first few trips no CEL.

Finally, yesterday on my way to work I got a CEL, and it was intermittent, similar to other issues I had read about. However, the more I drove the car, the worse this problem got. It would not stay in gear while cruising down the road. I tried changing gears manually, revving the engine up and letting it drop to idle, but nothing would work. Luckily the car got me to work but it was a real jerky ride. Towards the end it didn't even want to take off from a stop. And it wasn't in third, the engine just wasn't engaging the transmission. It's like the car was in neutral. But moving the gear shifter didn't seem to work.

The car did not make it home, however. When I started it after work, it went fine for about 2 blocks and then started slipping. Within a quarter mile I couldn't even go in first. Turning off the car and waiting a few minutes, then going again would gain me some distance, but the car would start slipping again almost right away. I was able to turn around and park the car in my work's parking lot.

The problem is I have no way to pull the DTC's now because the car can't make it very far. If it's something simple like the input/output speed sensors, I'll replace those in the parking lot. I'm a DIYer and hate paying others for what I can do myself, but I may need to bite the bullet on this one.

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Elantra XD (2001-06) :: Automatic Transmission - All Gears Lost Forward And Reverse

I'm having trouble with the automatic transmission in my 04' Elantra, it acted like the speed sensor was failing, but later the same day it lost all gears, forward and reverse. after turning the car off and sitting a while I started it back up and had gears again, but the trany is making noise. Fluid level is ok.

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Elantra XD (2001-06) :: Transmission Shifting On Its Own When Drive Around 25 - 40 Mph

I have read the common problems and went ahead and replaced the Throttle Position Sensor, TPS. Also had a complete tranny flush done. The shifting problem persists, when I drive around 25-40 mph, the car will constantly upshift or downshift on its own even. Sorta like I get to 30 mph and it suddenly decides to downshift, like it has become ultra sensitive to minor increases in torgue(?) or can't decide if it wants to be in 3rd or 4th gear. Did check with Jiffy Lube to make sure they replaced it with SP3 fluid and they did. What else this might be? Check engine light comes on now and then and currently is off.

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Elantra XD (2001-06) :: Manual Transmission - Thump When Shifting

I've been hearing a quiet 'thump' when shifting. In particular, when first letting up the clutch starting out in 1 but also when shifting between gears when the clutch is fully down such as from 2->3.

I thought perhaps a fluid change was in order since I'm at 110,000 miles. It didn't make any difference. (I used Mobil 1 GL5 which according to independent tests is safe on yellow metals.)

So then I wondered if it's the engine mounts, but I'm not sure what it sounds like when they need to be replaced or if simply shifting between gears while driving as described above would cause a worn one to 'thump'.

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Elantra XD (2001-06) :: Automatic Transmission Shifting Erratically

i have a 2001 elantra with 136k. the automatic transmission (which otherwise shifts very smoothly and shows no sign of problems) shifts suddenly and erratically when i'm driving at a constant speed. I'll be traveling along (speed doesn't matter), and it will suddenly downshift, then upshift, then downshift, etc. this started off being very occasional, but now it randomly shifts every 5-10 seconds.

I've changed and checked the fluid, and tried replacing the Input Speed Sensor and the Output Speed sensor...that didn't fix it. it also does not blow a check engine code. I'm convinced there must be a sensor somewhere that is faulty. it really seems as though the transmission is electronically confused.

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Santa FE SM (2001-06) :: Shifting Rough From 2nd To 3rd Gear - Transmission Input Output Sensors

A few years ago my auto transmission in my 3.5 L engine hyundai santa fe started shifting rough from 2nd to 3rd gear, i did a trans flush and changed the input output sensors, anyway last week it started again, so i just changed the input output sensors again, it did not fix the prob this time, do you think a flush would work.

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Elantra XD (2001-06) :: Engine Light While Driving And 2nd Gear Taking Time Shifting - Thump On Transmission

O.K. first of all I had an issue with the Odometer pointer being jumpy. Sometimes it wouldn't move. Now I replaced the input sensor at first and did not fix the problem. I replaced the output sensor and fixed it. "BUT", Now, I have a problem with the transmission shifting. I get an engine light while driving and the 2nd gear seems to take its time shifting and when it does it make the left side drive shaft kick in hard and spends my wheel to a screeching effect. Plus a thump on the transmission. I rechecked the sensor for connection and reinstalled. Drove the car still have the same issue?

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Elantra XD (2001-06) :: Occasional Rough Change In Auto Transmission

I have a Hyundai Elantra XD 2004 FX hatch. About 3 weeks ago we noticed that there was an occasional rough change in the transmission. It happens mostly between gears 3 and 4, but can happen outside these gear also.

I have checked the fluid level and it always seems low. Over the last 3 weeks I purchased some transmission fluid (I used the Castrol brand for that specific car as looked up by the spare parts shop) and the problem hasn't got any better. On top of that despite adding a total of 800mL over the last couple of weeks it still doesn't appear to register between the cold and hot level on the dipstick.

I've looked around for leaks and can't seem to find any, there were a couple of drops underneath the car but I can't say for sure they are transmission fluid, I'll have to check this again soon (it's a bit difficult as it's not my car it's my wife's and when she gets home it's dark). Either way it's only a couple of drops at worst.

What this might be, and what the process I should follow to diagnose it is? If it's anything besides a leak in a hose then I'll definitely be taking it to a mechanic/transmission specialist.

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Elantra XD (2001-06) :: Transmission Is Shifting Into Higher Gear Without Releasing The Lower Gear

My 2006 Elantra (54,000 miles) shifts really, really hard when it's not cold and passes through the 35 mph range -- hard enough to make you glad you've got your seatbelt on. I've taken it to my regular mechanic and now it's in an automatic transmission shop.

My mechanic changed the fluid (twice), and took it through a "learning sequence". The fluid didn't look that bad and he reported that there were no codes to work with. He thinks I'm going to have to get a new transmission.

The AT shop has confirmed that there are no codes to work with and that the problem begins at 143 degrees. They tell me that the transmission is shifting into a higher gear without releasing the lower gear. They tried replacing a couple of solenoids, but that yielded no change in behavior. Now, they're telling me they "think" I need a new computer. I'm just afraid the trial & error approach is going to cost me a boat-load.

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Elantra XD (2001-06) :: 2004 GLS - Sudden Rough Idle Under 1k RPM

I have an '04 Elantra GLS with 274k on it. I've been caring for it myself with basic maintenance; that said, I changed the oil in it about 100 miles ago. Halfway through my drive home it started to idle rough under 1k rpm.

I've noticed a lot of other Hyundai's have the same issue. What would be/is the most COMMON cause of this? Timing belt? Basic tune up? I moved a state away from my local shop and I refuse to go to a Midas/Jiffy/ect.

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Ford 7.3L Power Stroke (1999-2003) :: 2001 E350 Transmission Not Shifting Properly

I recently purchased a used 2001 E350 with a 7.3L and the transmission is not shifting properly. It will go into Reverse no problem, put it in "D" and it starts in high gear and will not shift out. If I manually shift from 1 to 2 to "D" it works fine and will even go into OD. It will not down shift on its own either. What should I do to fix this issue?

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Elantra XD (2001-06) :: 2004 - Rough Idle When In D And Foot On Brake

I have an 04 elantra 2.0. Seems to idle rough when in D and foot on brake at the the lights etc. Put it into N roughness goes away.

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Elantra XD (2001-06) :: Rough Running With Low Power And Flashing Engine Light - Cylinder Sparks

I have a 2001 elantra 2.0 gls. It is running rough with low power and flashing engine light. It may have a bad 02 sensor but when checked for spark only the 2 and 3 cylinders were sparking. I can confirm this because when I unplugged the 1 and 4 spark plugs it made no difference in the way it was running. Next I tested the resistance on the coil packs. Both were an even 1.5 ohms. How can it be that the coil packs are good yet the plugs aren't firing? I also have moved plug wires around and have had no success.

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Elantra MD (2010-15) :: 2011 - Rough Shifting In All Gears

2011 Elantra Limited, auto, 15,700 miles. Past couple of days I have experienced very rough shifts in all gears. First noticed on Saturday. Drove about 10 miles Saturday morning, then parked until around 4pm. Car started normally but rough shifts for first 5 miles.

It felt like the car would drop out of gear when shifting, then go back into the correct gear. There was definitely a "pause" before it went into gear, like bouncing up a set of stairs. Problem resolved itself and did not reoccur until this afternoon. Car was parked for 1-2 hours. Same rough shifting for 3-4 miles.

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Hyundai - Elantra :: 2001 - Engine Light Flicker / Sulfur Smell / Rough Running And Low Power

2001 hyundai Elantra 97000 mi. perfect on Thurs. Engine light flicker, sulfur smell, rough running, low power on Friday

First thought / hope, Bad gas? Had Filled up on Weds.... I added dry gas and FI Cleaner.

Second thought / fear Cat. Converter

Third . .. . ???

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Santa FE SM (2001-06) :: Rough Running While Driving / 2 Of 4 Cylinders Lost

2001 Santa Fe with 2.4 engine auto FWD 198k miles. When it is started first in the day, the engine sounds good and shifts well. After a few minutes and also after stops, first gear works well but then the following gears do not work well almost as if the engine and the transmission quit talking to each other. Traveling at 60 mph starting up a medium hill, the car downshifted and could not pick a gear. Although I pushed the pedal harder, the car did not respond rather continued to slow down. It acts like I lose 2 of the 4 cylinders in all cases. I replaced the spark plugs and two of them had oil on top of the plugs and also all around the threads. I replaced both coils thinking that one of them was the issue but no change has been observed. I replaced the throttle position sensor; no performance change. I do not believe it is the transmission as I have not notice any clunking, or bad shifting when starting out. While coasting at 40 mph in neutral and my pedal pressed at a certain position, the rpm gauge fluctuated from 3k to 3.6k many times for the duration of 20 seconds.

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