Is it common to have significantly harder downshifts in S-mode versus regular D? In D-mode the car very much feels like an "auto" through and through. However, when I am in Sport the downshifts are much, much rougher...very "jerky". I'm assuming this has something to do with rev-matching but...even when I'm just crusing in S-mode and coming to a slow stop it jerks between the gears.
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When driving in Sports mode only there is a hard downshift from 3rd to 2nd and or 2nd to 1st gear. It is very apparent when stepping on the brake to slow for a turn, the transmission downshifts causing the car to lurch forward (just like if you were to downshift badly on a manual). My car is a recent build 3/07. The car is undriveable in Sports mode at city speeds.
View 8 Repliesi just wanted to test out my car today... i was going about 85mph... switched from the regular "D" to "S" and floored my car... redlined at S5.... going about 120mph... but never kicked into 6th gear.
View 15 RepliesI am the proud owner of a 2001 2.7L V6 Santa Fe. His mileage is roughly at 170,000 and I keep up with fluids and minor repairs (except an oil change, oops). Yesterday I was out with my fiance and our German Shepherd, we stopped at a restaurant and while we were inside our dog decided to redecorate the gear shift (PRNDL) with my ice tea. I noticed a problem immediately.
When I started to drive, there on the dash board was the normal "D" with and added "1" as if it were stuck between automatic and sports mode? I attempted to shift it to full sports mode to manually shift; I couldn't get him (the truck) to go above first gear, and nothing happened. I then attempted to fiddle with the gear shift to see if I could some how "knock" it back into automatic but nothing I tried worked.
The truck shifts easily into reverse, there's no abnormal sound coming from the engine, it drives just fine but refuses to go above first gear. I did discover tho that if I shift the engine quickly into neutral while driving and then down shift back to "D", the engine will shift easily but I assume this is not good on my transmission.
D and 1 light are on
Won't shift past first gear
Reverses just fine
Kicking it to neutral then D will shift the engine
Spilled something on the gear shift
I will try to upload a photo of what's going on with my dashboard lights referring to the "D" and "1" light.
Last night my girlfriend and i were coming home in her Sante Fe and it was driving perfectly fine. The check engine light was on, but it occasionally comes on so i figured it was probably just a sensor.
When we got in the car this morning and i put it in drive (automatic trans) it was in sports mode (i'm assuming because a "1" popped up under the "D")
And now i cant figure out how to just put it into normal drive. We spilled a tiny amount of soda on the shifter last night, maybe 3/4 a cup at the most.
New Sonata owner. Got myself a 2015 Ultimate. Is there much difference in acceleration between "Sports Mode", and just running the car in manual mode (shiftronic)?
I know my Elantra used to have a huge acceleration bonus if I ran it in manual mode. Not sure if that caries true here.
Experienced an accidental shift from automatic to sports mode when attempting to "park" your Sonata? It happened to me last weekend. My car shot forward like a torpedo, doing considerable damage, not just to my car but to others as well. I have often thought it takes no effort to switch to the sports mode, but have never used it. Now I wish it were not available.
View 18 RepliesSo I just purchased my new-to-me, CPO 2010 RX 350 two weeks ago. It had 81,750 miles when I purchased it, and it now has about 83,000 miles. I just came back from a weekend vacation, having driving about 500 miles total. This morning when I turned on the car, I noticed a message saying "Check AWD System," the check engine light was on, the general warning light was on, and the traction control light was on. As I was driving, I realized that the car wasn't downshifting properly. I didn't drive faster than 40 mph on my morning commute. When the car did downshift, it was a hard, jerky shift.
I did some reading on the forum, and many people suggested all the warning lights could be fixed by taking off and retightening the gas cap (due to the vehicle not reading the emissions properly or something?). I also read that topping off and overfilling the gas tank can be cause for the warning lights to go on. I did fill up once on my way home from my vacation, and haven't filled up since.
Anyways, I just now tried to adjust the gas cap and then restart the car, but the warning lights are still on. What I should do or if I should drive it a bit to let the emissions build up again? My problem is is that I live about 6 hours from a Lexus dealership, so I'm trying to figure out if I can resolve this on my own or what I should tell a mechanic specifically if I need to take it in.
I was driving around some very steep hilly highways recently. I have tried this in both cruise control and normal coasting.
I noticed that the Tiguan will automatically downshift when going down a steep enough incline and a certain higher speed is automatically reached. Whether that is based on what was set by your cruise control, or even when letting the car coast down by releasing the gas peddle, it will still reach a point of downshifting automatically.
What I hate about it though is that this downshifting causes the engine to suddenly rev very high RPMs. Its also pretty loud at that point. That's bad for the transmission system right?
Usually in automatic mode driving, gear shifts up at around 2,500 RPM (mostly around 2000 RPM point). But when you are going downhill in a steep incline, the Tiguan automatically goes to a lower gear causing the RPM to shoot right up. I've had mine go up to 4,000 RPM downhill and the engine screams and spins really fast as you can clearly hear. It of course does the job of keeping the car at a certain speed, but is this bad for the transmission?
I mean, I prefer pressing on the breaks to control speed downhill. Break pads are cheap and easily replaceable. Transmission strain and failure is a whole other business. So I would prefer the strain be placed on my breaks and not my transmission system for the purposes of controlling speeds downhill. The latter failure mode will be the case if they rely on the transmission to control speed downhill.
So what is a "happy RPM" for the engine anyway? What RPM is the 2.0T engine at its most efficient?
Long story, but I bought a 2007 Prius with 73K miles on it. Now I'm at 93K miles, and I think it may be more jerky than when I got it when I shift the tranny into "brake" mode.
I don't know if the fluid has ever been changed on it, and I intend to change it very soon now. Am I in a pickle? Or should this transmission be fine if the fluid hasn't been changed for 93K miles?
Seems like my headlights are pointed too much down now. Is that a common issue? I have Xenons btw. Is this something easy for me to do or should I take it to the dealer?
View 22 RepliesWhen driving in Sport Mode I have a violent down shift as the car slows and heads into second gear from third. It doesn't seem to matter if I am going 40 miles an hour around town or 70 miles an hour coming off the freeway. There has been a few times where the jerk is so hard that seatbelt tensioner tightens. Is this a normal aggressive function of the sport setting, or is this something else? Perhaps related to the transmission valve/hard second gear shift issue?
View 24 Replies I have been noticing that my GTI seems jerky (head bobbling) at low CONSTANT speeds on the highway during my morning commute. For example if I leave it in first and get the speed constant at 10-15km at 1,000 - 1,500 rpms I feel the car to be jerky. Even at low speed/rpm gear changes (1'st - 2nd). Anything past 2,000k RPM is fine though.
Is this normal? Or should I bring this up with my dealer and have them take a look at it. It's just annoying because I don't notice this in the city, just only in bumper to bumper highway driving at a constant low speed in 1st/2nd.
So I've upgraded to K04, and also have put in a DXD Stg2 clutch/flywheel. The issue is that when it engages in 1st gear, it's jerky. No other gear does this, 1-2, 2-3 etc is fine. It's when I'm slowly engaging the clutch from a stand still, it's not a smooth event. Under WOT in all gears it holds just fine too, no slipping or anything else. Slight chatter at idle when the pedal is out, but it's what is to be expected w/ a single mass. I'm very sure that everything was installed correctly. Is this a symptom of an upgraded clutch? I've driven Dave's GTI w/ a STG 3 clutch, and it didn't do that?
View 17 RepliesSo I've got 8400 miles on my TDI, and for quite some time now, I've been intermittently noticing the car somewhat jerky while driving. Jerky to a small extent, like the DSG can't make up it's mind as to the gear. I could be driving home at 45 or so, and I'll randomly feel a slight bump through the pedal when I'm on a flat road. I've gotten this quite a bit. Obviously I expect to feel the DSG shifting when I'm flat out gunning it, but not when I'm maintaining a speed and should hypothetically be in the same gear that entire time.
View 16 RepliesHad brought this up before but it seems like the thread got black holed. After my car warms up, it feels quite a bit down on power and throttle response is a bit jerky. I just replaced the MAF and the coils hopping it would work, no codes on VAG Com. I was thinking maybe the green coolant temp sensor went out ? Car does backfire a bit when decelerating. Also the RPMs drop down a bit slower than normal lately.
Cam sensors are not loose.
GIAC chip, EVO intake + stage 2, exhaust. 134k miles.
When I come to traffic and slow down, I have this jerky feeling when I'm coming to a stop. It's not from my brake or transition from gear changing. It's repetition of jerky feeling, not like one jerk from second to first gear.
For example, I'm in my first gear and stopped on the road. If I release the brake pedal and do NOT press gas, my car slowly moves forward with this jerky pulsation. It also makes noise (well.. I can hear it through my exhaust) while it moves. It feels like car is about to move, then stops, then moves, then stops.... I don't really get this when I apply gas.
When I first start me car up, doesn't matter the outdoor temperature it idles terrible jumping up and down. When I go to put it in first gear and attempt to pull out it's very jumpy/jerky because of this rough idle. Once I drive a little bit if I stop it will idle fine. This problem seems be slightly worse when it's wet/raining/humid.
Its throwing codes P1128 Manf Control p0300 multiple misfires and then p0301,0302,0303,0304 which is misfire for that individual cylinder. Also my oil light blinks once in awhile, think that could possible be sep issue though.
I changed plugs, the old ones were really white... I believe that means running lean?
Put in new coil/wires
Gas Filter
Mass air flow sensor
Changed 02 sensors
Also did the seafoam treatment, none of it seemed to work...
Though about possibly changing temp sensor next. I hope it has nothing to do with fuel injectors....
2000 Jetta 2.0l 4cy AEGengine
Have an 04 Jetta GLS 1.8t manual. While accelerating at lower rpm and I'm kind of on the gas to get up and go it starts bogging out. Could almost describe it as a little jerky. Anything over 3000 rpm there's no issue. Doesn't matter what gear I'm in either.
View 15 RepliesI need to have my DSG checked out.. Extremely jerky starting out in first gear when very hot out and engine warmed up --most noticeable when just easy on the accelerator. Need to get the ok for mechanotronic replacement. Who to trust for a reliable job and evaluation of the problem.
View 3 RepliesMy 2011 Golf R is tuned to Stage 2+ by Revo and has the following hardware modifications:
1. Miltek turbo-back exhaust
2. Larger Intercooler supplied by Revo
3. Autech (spelling??) HPFP
4. Revo intake system with a foam filter
Lately I have experienced the following problems:
1. Difficulty in starting (sometimes)
2. A kind of "flutter" on starting as engine revs settle to the idle level
3. A noticeable hesitation in taking off from stand-still
4. Jerky acceleration immediately after the car moves from stand-still
5. At any speed, a noticeable hesitation when throttle is applied
All the above issues have happened in normal driving. By that I mean NOT hard driving. I drive my car on DSG "manual" shift mode.
Unfortunately customer service from, both, Revo and the VW dealer in Dubai leaves a lot to be desired. What are the different possible causes of the above problems, I can make sure that Revo / VW go through the full list until the cause(s) are identified.