Santa Fe (CM - 2007-12) :: 2009 - Subtle Fluctuations Or Surges In Engine Under Both Acceleration And Cruising Speed

I recently bought an '09 Santa Fe Limited. I want to love the vehicle, but I've got a problem with how it drives. Basically, here are the symptoms:

1. Engine RMPs dance around about 200 RPMs at idle. (I was told this is normal. I don't think it should be.)

2. Under normal acceleration, it bogs down immediately after shifting into 2nd gear and after a couple of seconds there is a surge and acceleration seems "normal."

3. Occasionally, I feel subtle fluctuations or surges in the engine under both acceleration and/or cruising speed (any speed, really.) It's like I'm feathering the throttle when I know I'm not. This is most pronounced when under a load, such as taking off from a stop sign at the bottom of a hill and accelerating up the hill.

So, here's what the dealer has done to address the issue.

1. According to the Carfax report, the previous owner had the throttle position sensor replaced at 22,000 miles and again at 27,000 miles. I bought the vehicle with just over 30,000 miles (certified pre-owned).

2. On the day that I bought the vehicle, I noticed the issue and the service manager took it for a test drive with me. He told me it was wind buffeting that I was feeling. I thought that was bunk, but with it being a higher profile vehicle, it put some doubt in my mind. He went ahead and flashed something to reset the adaptive learning module that supposedly adjusts something in the engine based on how you drive. It seemed better after that, so I went ahead and bought it.

3. After a few weeks of driving it, it became clear to me that it was definitely not wind buffeting, so I scheduled a service appt. It was taken for an "extensive" test drive (according to the service record) with a diagnostic computer connected. Apparently, the service technician said they were only able to find one small blip with the mass airflow sensor, so they replaced it and called it fixed. I should also note that at no time, have any codes ever shown up when they check for error codes.

4. Although it seem slightly better, the problem still exists. Just for kicks, I dumped a bottle of Seafoam in the gas tank with my last fill up, but that doesn't seem to have made any difference.

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Santa Fe (DM - 2013+) :: Hesitation In Engine When Acceleration Is Pushed

Loving our new SF, but have noticed a problem periodically when starting out from a dead stop. When the accelerator is pushed, sometimes there is a hesitation in the engine. Almost feels like the gas has been restricted for a second, then it engages and goes. I've notified the dealer and plan to have them look into it at my first oil change, but it is happening more frequently and think it may be something I need to get looked at sooner than later.

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Chevrolet - Venture :: 2000 3.1L - Surges On Acceleration

This car has 210k miles with very minimal problems. I'm the original owner and have always done my own repair work. For the last two years the car has been surging on acceleration. It is fairly rapid surging and it is intermittent. When it is especially bad I can let up on the throttle, press again and it may be OK...until the next time I accelerate. I have replaced a lot of parts, there are no trouble codes and nothing noticed in the data streams. I've tried four throttle position sensors (second one failed and set a code) and nothing makes any difference.

Here is a list of other parts I've replaced since this problem started, again nothing changes the surging, fuel pump (failed level sensor), fuel pressure regulator (pressure was on low side of range), idle air motor, map sensor, mass air flow sensor (swapped with my S10 pickup). I'm planning to donate the car to an organization after I get this problem fixed (my wife won't let me donate it with the surging problem since it could be safety issue if the car doesn't accelerate when its needed).

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Golf IV R32 :: Uneven Idle / Slight Surges Under Acceleration

OEM plus. 93k. Um tune. Evoms intake.

Did the plugs and coil packs, fuel filter, cleaned throttle body (Did a vagcom alignment) as well as some other insignificant maintance.

Car ran fine for weeks after, but recently it has started to bounce around randomly at idle. Like 650rpm(normal) for a few seconds. Then it will Slowly climb to 800rpms, hold there for a few seconds. Then back down to 650ish for a few seconds, then back up to 800 for a few seconds. And so on. It's very subtle and very random. Then sometimes when accelerating, I can feel it in the gas peddle. Like a slight pulsing power loss. Very slight and of a similar rhythm to the idle issue.

I do have a check engine light for Load Calculation cross check-p1143-001 upper limit exceeded. But that has been a battle I have been fighting for a year or so, and I think that is some kind of vacuum leak, but this rpm issue just started a few weeks ago. The only thing I was thinking so far is that when I was doing the plugs and coil packs, I noticed that there was a slight bit of what looked like dielectric grease on each coil pack already from the factory. So I didn't put any more in the coil packs sleeve part that fits over the plug. So was that a mistake? And if it was a mistake would this be a symptom of that?

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Camry 2012+ :: Transmissions - Occasional Acceleration Surges When Braking

I have a 2012 Camry LE. When I let off the gas between 25 & 40 mph, the transmission aggressively brakes. Occasional acceleration surges when braking. And when I need to go, it sometimes does not want to go until I punch it. All problems are sporadic.

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Santa Fe (DM - 2013+) :: Grinding Noise Coming From Rear Of Vehicle On Sharp Turns Under Moderate Acceleration

I own a Canadian 2013 Santa Fe sport AWD 2.0l turbo. Back in June/ July 2015 I noticed a poping / grinding noise coming from the rear of the vehicle when ever I made sharp turns under moderate acceleration. I brought my car into the dealer as it was still under warranty. They diagnosed the problem to be my viscous coupler apparently it was defective.

The part was ordered and replaced about 3 weeks later. After the warranty work was completed in still noticed a noise coming from the back end. I took my car back to the dealer. They found that the rear tires were "cupped" they recommended to get a 4 wheel alignment to solve the cupping issue.

In my past experiences tire cupping is usually caused by a worn out suspension component such as bad shocks. So to avoid conflict of interest I took my car to Canadian Tire to get the alignment checked and adjusted.

Sure enough the front wheels only were slightly out of alignment and a minor adjustment was made. No adjustments made to the rear. The technician advised me that due to the minor adjustment, the alignment would not cause my rear wheels to cup. The complete suspension was checked and no problems were found.

So...would a bad viscous coupler cause wheel cupping???

My Santa Fe had 48000kms at the time of the original noise was detected.

I do not tow a trailer or haul overloaded loads.

The majority of kilometres made Is done on highway.

The rear tires have now been rotated to the front.

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Elantra GD (2013+) :: Poor Shifting - Car Hesitates Then Surges Forward

I've been having an issue with my Elantra GT where the car appears to be shifting poorly. The issue is very intermittent and usually only occurs just after starting to drive for about 4 to 5 minutes. But it never occurs consistently during every time I start driving the car. It is an Auto transmission but it feels as if a poor downshift is being back (car hesitates, then surges forward). From my research the transmission in the GT appears to be fairly reliable.

Background
2013 Elantra GT
KMs: 98500 km (high mileage commuter to work and back)

Note: Installed K&N Typhoon around 95,000 km, issue persisted before and after.

Initially started to feel the issue around 80,000 km. At this point I took it to the dealer and had the transmission flushed. The issue went away until about the 87,000 to 90,000 km mark and then started to return. Went back to the dealer and they said they performed an updated and couldn't replicate the issue during test drives. Currently my car is at 98,500 and this morning when driving to work the issue was particularly severe and the check engine light came on.

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Accent RB (2012+) :: 2013 - Engine Detonation / Bogs And Surges

Bought a 2013, had been in a flood, couldn't see any sign anywhere of water level or damage, had 12,400 miles and noticed engine ping/detonation when engine lugs, have changed to mid grade and that works but every time I go back to 87 octane it starts back up.....also, I have noticed a bog down of the engine when I just barely give it any gas and if I keep the accelerator in that exact same spot, it eventually jumps into like a surge...

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Ford 6.0L Power Stroke Diesel :: Surges / Buck At Acceleration - Gallop / Miss / Stall At Idle?

I've seen the gods of the diesel engine do some amazing things on these forums, so after a year of pulling my hair out, I've signed up to try this myself.

This time least year,I bought a 2004.5 6.0L F-250 with 196k on it to haul around the state for my new business. At this time, I knew nothing about diesel engines AT ALL WHATSOEVER, but I've never been afraid to tackle anything and mechanics are not totally foreign to me. Not to mention, I was hoping everything might just go peach-ily for at least a couple years. (for what it's worth, My dad and his family are mostly shade tree mechanics and I'm a power plant operator so mechanical concepts are not totally foreign to me, just never had a diesel before)

To begin, I purchased the truck and everything was fine for about 2 weeks. Then abruptly one morning I noticed a couple of hefty surges on the way to work. Then, on the way home I thought all was well until about half way home, it did it again! as I was pulling up, it galloped once I pulled my foot off the pedal. like ba-DA-DA-DA-da-da-da-da-da-da-DA-DA-DA-DA-DA-da-da-__ and then STALL! Shaking with concern over potentially an awful purchase, I turned the truck back on only to find... that it's fine?!?? No problems for the next two days and then it happened again. then good for a week, then again. then good for 2 weeks, then again. so then I bought auto enginuity and an edge insight to do some troubleshooting. Let that sink in as I explain it's history a bit.

-All but one injector is ford remanufactured the other is stock (was never told which one)
-replaced head gasket with another OEM
-ARP Head Studs
-EGR delete
-HPOP AND STC fitting both replaced
-FICM replaced
-Oil cooler replaced 50k ago
-ICP and pig tail replaced right before my purchase
- Has been through roughly a handful of ICP's since I've had it (I'll explain)
-I've cleaned the EBP tube a lot and updated it to the newer ford sensor with the flare fitting

-I use Rotella T6 5W40 and CAT ELC-1 Coolant.
-Deltas are under 10 at normal driving
-I typically drive under 2200 rpm until warm then like a banshee at operating temps.

Now one year later, its not fixed, but I feel like I'm close.

The DTC's I have seen are ICP sensor circuit intermittent (I think po2884) and Power Blance contribution failure from cylinders #2 #7 and #8 but never at the same time.

Every time I replace the ICP, it will be problem free for about 6 weeks and then it will return full force (surging and galloping when warm about 50% of the time)

During a possession I see the following:

*Cylinder power contribution test yields no issues at idle or when cold. when "possessed", the whole baseline across all cylinders goes up and all cylinders dip and return at random. none singled out

*ICP voltage fluctuating from ~.6v to 1v (.24 @koeo) *Also during a surge*

*ICP PSI dancing up and down ~600 to 900psi (0.0 @koeo and ~500 at normal warm idle) *Also during a surge*

*IPR% bumps up and down ~25% to 30% (15%@ koeo and 23% at normal warm idle) *Also during a surge*

*FICM Voltage anywhere between 47.5v and 49v

*EBP is normally 15-20 psi

*Boost is 1-7 normal and is not affected by "possession"

These numbers have taken a long time to get since it will only be possessed for about 3-10 seconds at a time and then will disappear for days. The stall has only happened about 5 total times in a year. The surging is much more frequent. I usually get a buck or 2 on any given trip that is longer than a half hour but NOT IMMEDIATELY AFTER AN ICP REPLACEMENT.

On one occasion, I noticed that the ICP PSI actually tanked to about 350 right before the IPR went from 25% to 40% right before a posession. I was driving about 35mph through town at the time.

Here's my thoughts...

- Did that one occasion clue me in to an intermittent HPO system leak causing the truck to briefly over-compensate by spiking the IPR?

- Is my ICP pig tail jobby done incorrectly? If there was a short, wouldn't I see the volts drop to 0? I have another one and will replace to rule it out.

- I have yet to test my fuel pressure, but I figured if it was low, I would have lost injectors by now. (I replace filters probably too often but next empty tank, I'm dropping it and checking the screen and strainers)

I should also mention that I have buzz tested the injectors and I can hear each one clear as day, and that for REALLY long trips, it actually returns to normal. In other words, my window of death is between 30min and 2hrs of driving; invincible after.

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Santa Fe (CM - 2007-12) :: 2008 - Surges At Startup When First Put Into Gear

My 2008 Santa Fe 3.3 with 18,000 miles, developed an annoying surging when first put into gear after sitting overnight. I must keep my foot firmly on the brake as I back out of the driveway. If I press gently on the brake I can feel the car jerk or surge and show higher than normal rpms on tach. The jerkiness will go away entirely after a few miles and the rpms will return to normal at idle at a stoplight or stop sign. Is this something that would be covered under my factory warranty? Car was purchased Jan. 2009. I also notice that when the car starts in the morning it goes to a very fast idle. Is that normal? I would think that with the way the oil filter is mounted that the engine might have to wait for oil to return to the filter before it can get to the engine. What could be the cause of my problem? And is it likely my warranty should cover the repairs?

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Santa FE SM (2001-06) :: Hesitation On Acceleration

It'll do okay when I am not flooring it, but when I do floor it there's a pretty noticeable lag and then VROM it'll take off like a bullet... This car has a manually operated throttle control, are there any adjustments I can make to make the truck more responsive? 2.4L 4Cyl....

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Santa Fe (CM - 2007-12) :: High RPM / No Acceleration

My 2011 6-speed automatic AWD santa fe was in a front end collision (T-boned a car that pulled out into the road then stopped) but was still drivable, just bumper damage. About a week later while waiting on the front bumper to come in, the starter died mechanically (of course, no relation, according to the shop and insurance adjuster since even though the starter is about 12" behind the point of impact, there was no undercarriage damage, ie, not related to accident). So when they got the part in, they replaced the bumper and the starter.

When I picked up the car from the shop, the check engine light came on when I got out on the road. On the road, the car had almost no acceleration. The engine RPM went up, almost to 7k but the car was moving slowly. This was on the on-ramp of the freeway and very disconcerting. It did make it up to about 40mph initially and then on the slight incline, took me about 30 seconds to make it to 60mph. I got off the freeway and pulled into an Oreilly auto and had them read the code. It came across as the phantom P200A (something about MAF sensor but usually not a true error in this make/model). I called the dealership, took it back. The guy looked at it while I waited, brought it around, said it was fixed, just had to have a code cleared and the check engine light went out. His experience was simply driving it in first, maybe second gear in the lot. He said it was the ECM, and this was typical as it had the battery disconnected for a couple days, the ECM needed to "relearn" the controls. He said give it a few weeks and it would be fine.

I got it out on the road, no more check engine light, but the acceleration/rev situation was still present. It has been a month, and it hasn't gotten better or worse. I can drive the 6-speed in auto around town, though it shifts higher, around 4k RPM if I am at all accelerating, or on even a slight incline. I can put the pedal to the floor while driving in auto, and it drops out of gear and into neutral, at least the way it feels, revs up, would red-line if i didn't come off the gas, but never accelerates, it acts like it drops into neutral. If I am driving with the car in manual shifting mode and choose where I want it to shift, it shifts fine, doesn't feel like it drops to neutral, however I can floor the pedal and it still only slowly accelerates, especially on an incline. It seems to bog down around 40mph or so, and take forever to get above that. Downshifting manually raises the RPM as expected, but no increase in acceleration.

Now I have a check engine light on again, and am taking the car back to the repair shop this week without clearing the light so maybe they can see something else that may have cleared at the auto part store last time. Basically, I have read multiple causes/symptoms which partially match this, but nothing exactly.

1. Limp home mode on ECM
2. Throttle position sensor
3. MAF sensor (or whatever the 2011 Santa Fe has equivalent)
4. TCM (Transmission Control Module)

There was absolutely nothing wrong with the car before the wreck, then the starter. No shifting/idling issues. I am wondering what a repair shop replacing a bumper and transmission could have done, that would create this problem. The transmission couldn't have died between working fine, won't start, and here, your starter and bumper are fixed but the tranny is FUBAR. I am thinking it absolutely HAS to be a sensor or computer controller of some sort, but not much on the web showing which sensors are which and where they are in a 2011 Santa Fe.

I believe the MAF/throttle body has to be removed to get to the starter (directly below it if I am not mistaken). One last thing, it is an AWD... it was towed from my house to the dealership with all 4 wheels up, as required for a AWD vehicle. If the shop pulled it from the lot to the garage, a few hundred feet at most, with 2 wheels up and 2 down, could that cause all this?

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Santa FE SM (2001-06) :: Smokey On Acceleration

My 2006 santa fe diesel 2.2 has started to be be a bit smokey when accelerating not even hard had the egr valve off today and gave it a good clean still the same it's not really bad but can see when moving off from parked...

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Elantra GD (2013+) :: Wavy Acceleration Feel And Hesitation

My car has the wavy acceleration feel and sometimes hesitates a bit. It is way worse when the a/c is on. I wonder if this is a octane or spark plug issue. On my old cruze 1.4t the gap was wrong from the factory. It came with all four gaped under .022 but the manual called for .028. Everyone gaped to .035 with great results. Checking the spark plugs?

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Elantra GD (2013+) :: Acceleration Noise When Engine Is Under Any Load

The sound is only there when the engine is under any load. If I am very careful I can raise through the RPM without the noise, but give it a little bit more gas and there it is. It sounds kind of like an exhaust leak, but I'm not sure.

[URL] ....

Listen closely right at 0:12-0:15. That is me accelerating for 3 seconds, and that sound like a rain stick is my engine.

2013 Elantra GT ...

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Nissan - Frontier :: 2013 - Acceleration Won't Respond When Gas Applied?

My dad purchased a new 2013 Nissan Frontier 4wd in June 2013. On occasion he has issues with acceleration in that he steps on the gas to go (from a full stop), or steps on the gas to speed up (and pass) and the accelerator does not respond. After anywhere from 3-10 seconds it will lurch forward and go. This is an inconsistent/random occurrence. He has taken it to 2 dealerships and they can't seem to find anything wrong.

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Santa FE SM (2001-06) :: Lack Of Acceleration On The Highway

2002 Santa Fe 2.7L AWD automatic

She was on the highway this afternoon and was accelerating to merge in with traffic. Apparently the car just reved up without actually accelerating. She said it felt like she was in neutral. I've driven the car a few times over the last week and it has been running perfectly - No hesitation anywhere at any speed. There are no CELs (yet). It is probably worth mentioning that it has been raining HEAVILY here for the last 24-hours and I would not be the least bit surprised if she hit a few puddles on the way. I can just about guarantee the CPS has never been changed and am suspecting it may be a short in causing her problem.

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Santa Fe (CM - 2007-12) :: 3.3 Engine AWD - Rough Acceleration

I have a 2009 Sante Fe, it has about 96000KM on it. It is a 3.3 engine AWD.

I find that when I accelerate the thing kind of feels rough. It is very subtle. Like you can almost miss it if I wasn't being so picky. But I can definitely feel something there. What this would be.

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Santa FE SM (2001-06) :: Vibration At 35 - 40 Mph During Acceleration And Deceleration

I just bought a used 2004 3.5l automatic Santa Fe. The vibration is most noticeable from 35 - 40mph during acceleration and deceleration. It's there at higher speeds but the car doesn't physically vibrate as much.

The vibration is there with the car coasting and transmission in neutral. It's there with the car coasting and the motor off.

The tires and wheels have been swapped out with other wheels and tires. No change.

The front driveshaft U-joint has been replaced. No change.

It seems to be in the drivetrain somewhere. I would like to fix it without slowly replacing everything.

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