My 2012 Santa Fe GLS 2.4L jerks and bucks while coasting. When you let go of the gas pedal the car would jerk. Is that normal for the car. The dealer could not duplicate the problem.
View 10 RepliesTruck is 08' with 5.4, 3.55 gears, auto trans. 84k miles. Recently purchased from the TSA fleet trucks, so I have no clue what PM procedures were done prior to me getting it.
I noticed the following: when I get the truck into OD and then slowly decelerate (meaning I let it coast and im not braking) to about 40mph then get on the gas (normal acceleration) the truck bucks hard almost like when your spinning wheels on snow or ice and put the truck in 4wd and the front rear locks. or a limited slip rear that catches when one wheel is spinning.
if I accelerate hard the truck pushes thru it and doesn't buck as bad. I have searched this out and there are several threads about it that describe just about exactly what im talking about, the following have been brought up as possible problems:
1) bad spark plug/s and or coil/s
this seems to be the most common answer to the possible problem.
2)broke valve spring
3) bad torque convertor
So at 84k miles im thinking replacing the spark plugs would be fine to do as a PM. So coils.............should I just go ahead and replace them as well? I found them (motorcraft). does that seem right?
As far as spark plugs, I have already read the horror stories on the 04-08's breaking the plug in the head. I have also read that before 10/07 was the trucks that had the issue. my build date is 02/08. am I good to go with normal removal of the plugs? the best method I have read for removing them is spray carb cleaner down the hole and let it soak overnight and then the next day drive the truck get it nice and hot and remove them right after you park it,,,,
It just started doing it the only way I can seem to figure out how to explain it is at about 50 to 60 under slight acceleration or uphill it bucks or jerks like you have a trailer jerking. No check engine light this thing is driving me nuts... 2004 f150 5.4 ...
View 14 RepliesSanta fe developed a noise underneath that rattles up to the gear shift. It happens mostly when you take your foot off the gas but can happen if your just cruising. Engine does not make any noise while revving it or under load in drive with foot on brake. Definitely sounds rotational but all looks ok underneath.
View 2 RepliesI just got a 2006 ford F250 lariat fx4,and it's already at the shop.. when cold start it has some white smoke, but once I get up to highway speeds the truck jerks and bucks. turbo is putting out normal boost. I've changed oil and filters along with fuel filters. also put on a new serpentine belt and pulley, air filter and have everything cleaned real good. the truck is acting like it's starving for fuel. FICM or injectors ?
View 14 RepliesI have a 2012 Hyundai Santa Fe Gls. I noticed that the car jerks while driving. It stumbles when you slow down. The vehicles feels like it lags power like something is holding it back. I noticed that the gas mileage is bad. What's wrong with it? Is it something fuel related?
View 32 RepliesI am the original owner of a 2002 Camry V6. Recently when you take the foot off the gas to coast or just maintain speed there is a sensation of jerking- it disappears as soon as you accelerate. Took it to Toyota dealership- they were clueless- they wanted to change the transmission fluid.
View 1 RepliesPurchased this car new. 2008 GLS w/ V6 2.7L engine. Wife's car, so I rarely drive it. She's complained for a month about an intermittent issue with the jar "jerking", usually during slow speeds.
I felt it for the first time myself. Was halfway through a pretty tight curve at around 20 MPH, starting to slowly accelerate when I felt a definitive lurch. might have been momentary loss of acceleration, or transmission. Not sure which. No CEL thrown.
I did see another thread mentioning a 2007 with a similar issue, but that person had codes thrown that pointed to a Throttle position sensor and a need to reflash a transmission. Think I'm seeing the same situation, or would this be different ? Absent any CEL, I'm sure the dealer will not be able to find it....
I bought a 2010 Hyundai Santa Fe 3.5L and noticed the engine would jerk really bad. It felt like the engine was going to jump out of the vehicle. I notice it does it when I turn it on in the morning and when I am driving slowly out my lane way the engine jerks. I have dealt with this problem since last year and they have already replaced the transmission which has done nothing. I took it back to the dealership and the service manager told me that he has already had 4 of the same vehicles come in with the same problem and they realized that they had to re-set the computer in the engine so that the transmission computer and the engine computer are on the same page that they talk to each other so to speak. Since they re-set the computer we have had the vehicle back a week today and this morning the car jerked again. I am tired of constantly taking this vehicle in and being told they have a solution and then it is not fixed. How am I supposed to sell a vehicle to someone when it feels like you are being lifted out of your seat because of the JERKING!!!!!
View 14 RepliesMy 2007 Sante Fe had problem this week. Took 6 attempts to start engine, then ran smoothly the rest of the night. The check engine light came on while trying to start vehicle.
Next day I changed the spark plugs but now find that the vehicle jerks when idling. Runs fine when going but jerks and bucks at stop lights and stop signs. Just added fuel injection cleaner to see if that may support the situation.
Engine light has come back on again since resetting. I have read several suggestions on internet regarding leak in vacuum line, Coil Pack damage due to faulty hose, even faulty 02 sensor.
When I'm driving at Highway speeds, if I let go of the accelerator to coast and then reapply the accelerator, I get a jerking, bucking sensation. It's only at high speeds over 60 mph or so. I'm only coasting for a second or two, not long at all. Otherwise the transmission works well.
View 8 RepliesI have a 2007 Taurus and for all intents in purposes the car runs great, expect during a snow storm. I drive 30 miles on the hwy too and from work. During a snow storm no matter how bad or if snow is blowing or on the ground my car bucks. I don't know how else to explain it. It is like the transmission is slipping but I know that it isn't because it happens for only a split second. It almost seems like the car wants to shut-off or the brakes are grabbing. This will happen the entire way to work or home every few miles but only during a snow event.
View 5 RepliesMy 2004 Santa Fe 2.4L manual transmission with 200,000km on it has this hard to explain noise when in gear and coasting. This is when my foot it off the gas and say I'm going down a slight incline. There is a pulsating humming noise, worse in the lower gears that coincides with the engine holding the car back. This only seems to happen during coasting and not when down gearing to slow down. And even when coasting if I press even ever so slightly on the gas so the engine is not holding the vehicle back, it goes away.
The clutch has never been replaced and I'm somewhat assuming it may be the clutch becoming worn.
I have a 2004 Santa Fe (4 cyl 2.7 L FWD) with only 42,000 miles on it. Coming home from work I was stopped at a stop sign and after stepping on the gas (halfway thru the intersection) my engine stalled - coasting to a stop (while crossing a very busy intersection I might add). After putting it in park I try to restart it - the engine cranks over as usual and starts but roughly 4 to 7 seconds afterwards it stalls again. I did this 4 or 5 times again with the same results. I'm almost positive the check engine light is on. The next day I popped the hood to see if the belt broke but its fine so I tried to start it again (same results engine starts but after 4 to 7 sec. stalls again). Before this engine trouble I haven't had one ounce of trouble from my Santa Fe. Not to be funny but yes there is a half a tank of gas in it... with plenty of fluids in it. After some research I kind of think its the Crank-shaft sensor (seems to be a problem with them in the Santa Fe's).
View 14 RepliesI changed the purge valve because it was hard to fill up. It idles fine but when I drive it at 40 and just cruise without a load on engine it starts to jerk or misfire. I'm going to change plugs even though they don't look bad and wires.
View 2 RepliesHave this problem where Santa Fe when coasting in a parking lot or driving slowly on the road, that their is a bit of a slam into second gear in the auto transmission?
Reason I am asking this is that I have this problem and own a 2013 KIA Sorento, but understand the Santa Fe V6 shares the same motor and tranny. I also read that one long term test of the Santa Fe on the web had this very same problem, but in the end after happening several times, stopped happening.
After reading much info, I ordered a Transmission Temp Sensor as this seemed to work on some cars, but it's really a hit or miss thing.
We have an '03 Santa Fe (2.4L). We are the original owners.
About 18 months ago, one of our Ignition Coils cracked and caused a misfire when then engine was under load. I replaced the coil, wires, and plugs myself at that time.
Since that time, we have experienced intermittent engine jerking while at highway speeds. There does not seem to be any pattern, and it does not happen every time we drive it.
I took it to the dealer who diagnosed a valve cover leak. They replaced the gasket, one ignition coil, wires and plugs. The problem still happened intermittently after that. I brought it back to the dealer, who diagnosed a valve guide/seat leak. Oil is getting into the cylinder and fouling the plug they say.
I could not afford the fix (and was very dissatisfied by the service I received) so the dealer recommended to change the plugs every 3 - 5K miles to get me through. I was told this on 03/31/09 (125695 miles). I replaced the plugs, wires, and BOTH coils again at that time.
Last week @ 130K miles the engine jerked again. I replaced all four plugs again Sunday morning, but the ones that I pulled were NOT look oil fouled. I showed them to a mechanic friend and the guy at the auto parts store. Both agreed that the spark plugs looked almost new. Sunday evening, while driving on the freeway, the car jerked again!
Since this happened again SO soon after changing the plugs, I really have a hard time believing the valve guide diagnosis. Some possibilities I have seen/heard:
- Crank position sensor or camshaft sensor (This was replaced at 78K miles along with the all of the belts)
- Clogged fuel filter
- Bad O2 sensor
- Vacuum leak from the hose that is between the throttle body and the engine casing
- The dealer's valve seat suggestion
This has happened a few times when the car jerks, check engine light comes on and seemingly goes into limp mode. Cannot engage 4 wd either. I leave the car for while then come back and the engine light is off and the car works normally.
View 2 RepliesWhile driving at between 20-45 MPH in warm weather only IDEAL SPEED IS 38-42 .. At times the car jerks forward and downward like, even slowing down at red light: Seems like the whole problem is coming from transmission! (Sensors)? The car is cursed. Example:
1- The symptom seems like your driving in drive position then all of sudden it shifts to low gear
2- When driving normal then it seems like the car shifts to neutral and the RPMs shoot up to 3-4
3- Sometimes when stopped the steering wheel shakes bad.
The car runs normal in winter time? Doesn't do it everyday.
2003 hyundai santa fe 2.4l ... When driving on highway speeds of 65 miles hour, I take foot of the accelerator and I put it back on to gain speed , it starts jerking or bagging. Also in the city when I press accelerator seems to have no power. I have no codes or check engine light on, what could it be?
View 2 RepliesI'm wondering if it is OK to shift into neutral while coasting (engine on). I've read varying arguments back and forth on whether or not it hurts it. I've done for a while in my 99 suburban and the transmission still shifts just fine. I've tried it once in the elantra just to see how it affects my fuel economy, and it boosts it about 100mpg (coming off a freeway ramp). Braking and steering controls don't seem to be affected by the lower vacuum.
I can see why its not advised while the engine is off (i.e., towing), but if the engine is on, torque converter turning, transmission fluid pumping, I can't see where it would hurt.