Santa FE SM (2001-06) :: Slight Hesitation During Acceleration Suddenly
Sep 29, 2011
Last night i noticed a slight hesitation during acceleration. Today i had driven around in town for awhile and did not notice any hesitation. When i got onto the interstate I pushed down the peddle to pass someone and it did nothing, I let off the gas and back on and the car bucked pretty bad. All the way home it has issues when I pressed on the gas but did fine at cruising speed. I would think a fuel filter would have been a slow progression issue so I am thinking maybe it is a sensor. I sprayed carb cleaner around vacuum hoses today and did not notice any surge so I think I eliminated a vacuum issue.
2004 Santa Fe 2.7 149k
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I have an '02 Santa Fe GLS V6 2WD. I am having a strange problem and do not know what it could be. When car is cold, it starts up and runs with no problems. After about 15-20 mins, there is a slight hesitation or studder. RPM's drop slightly and shutters. When i accel, engine studders, then runs fine. This only happens when at idle in drive. At highway speeds there is no problem. What can this be?
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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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I have a 2010 with about 166k miles. I am getting a slight hesitation at slight acceleration or constant speed. It does not matter if it's on highway or freeway speeds. Now I am not sure if this in junction with me changing the PCV valve, cleaning the EGR pipe, or cleaning the TB for carbon recently. It started happening a week after it though.
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2012 Accent Hatchback. ~57k miles. (not yet done the 60k mile service)
So at about 1.4-1.7K rpm I hear a slight squeal and the engine's rpm suddenly jumps down for a second, and you can feel the car shake, then comes back up.
I was able to see it while idling, where the engine simply shook a little, like it's stuttering/sputtering and about to stall, but then immediately recovers and continues to idle normally until it happens again (not very often when in idle, usually more often when getting out of idle and slightly depressing the accelerator)
If I press the accelerator more or harder then I don't get any of it. I'm coming up the 60k mile service, and the schedule recommends inspecting and replacing the belt.
I am wondering if the belt slips on the alternator would you be getting similar symptoms or should I be looking elsewhere? I don't think this matters, but I'll mention it anyways, I'm about 1K miles overdue on an oil change. But I don't think 1k is that big of a deal.
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I have a 2009 Tiguan 2.0T Gas 2WD Tiptronic Auto.
I noticed a while back on a cold morning that at first start the idle would seem off a bit.
I only would notice it for about a couple of minutes and then it would smooth out as I began to drive.
Lately that still happens some but mainly I have some hesitation or slight jerking as I accelerate now.
Mainly it will do it while starting to take off slowly/ when pulling a hill/ and when having to maintain a low speed behind many other cars.
I can counter act it a bit by stepping harder on the gas pedal(when there's room) and getting the RPM to go and stay over 2000 like on the highway.
If it is under 2000 RPM you can notice it pretty well.
I am concerned as I have not had this problem before and it is very well maintained and cared for.
Though it is likely due for a tune up...
What could be the most likely cause? I don't really want to take it to the dealer first as they would want a fee beforehand just to check it out.
It had a check engine light on for just a minute one day but it did not stay on.
If it stayed on then I could get the parts store to check it using the OBDII scanner.
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The problem started with a slight hesitation around 2500 under hard acceleration. Then it became more pronounced from 2 to 3.5k. The CEL would blink when it happened for more than a few seconds. Eventually the CEL stayed on. Now the car idles roughly with a periodic thump feeling, and any time a load is put on the engine, it feels very rough. I don't have VAG-COM, so I don't have any codes.
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My GTI is the first FWD car I've had since 1985, so the issue that I'm having may be just me adapting to a front drive platform. Here's what's happening: when I nail the throttle in 3rd or 4th gear, on or about 4K rpm or above, the car feels as if it's hesitating slightly as the revs climb.
It accelerates fiercely (I have the JB1, and I had the Neuspeed Power Module before it, and it's reacted the same way with each mod), and it's almost as if the front end of the car is lifting and struggling for traction (although the traction control light doesn't come on).
Is what I'm experiencing normal FWD behavior? Is it the beginning of torque steer? I only notice this at full throttle--not noticeable at all at partial throttle. Also, it doesn't happen consistently. My car is a performance package manual.
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I posted a while back about my 04 5.4 having an issue at idle. I did all the normal things like replace coil, spark plug, etc etc. No change to the issue. It still acts as though it's misfiring on a cylinder and I get codes P0306 and P0316. Finally took it to ford and had a diagnostic check ran. Everything on the top end was in working order. The tech even put a known working coil on 6 and nothing changed. I was told that it's either an intake or valve issue on that cylinder. But no definite answer to problem.
Fast forward to yesterday. I got a wild hair at lunch and went out and started truck. Pulled injector plug off of 6. No change to the way it was running. I did the same for 5, 7, 8, 1, and 2. All of which made a big difference in the way it ran. It was obviously misfiring with no fuel to cylinder. This gave me the idea to swap 5 and 6 when I got home to see if the issue followed the injector from 6. I did NOT. I pulled the plug on 5 and got the obvious change in the way it ran. So there is definitely something going on at cylinder 6 that I cannot figure out.
PCM, bad intake, bad valve? I'm not rich so a trip to ford for repair is gonna have to wait. Truck seems to run fine when driving except for slight hesitation during acceleration.
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2003 F150 5.4 72852 miles
I have a Rough Idle & sometimes a hesitation or stumble on acceleration. I cleaned the MAF & IAC motor & Air & Fuel Filters are new. I got a 20890 scanner & ran test 6 53 as suggested in many posts by BlueGrass. Here are My results & what They Convert to.
1 00F5 .3675
2 0051 .1215
3 0000
4 0000
5 00A3 .2445
6 0000
7 0000
8 0000
I'm guessing the cop's are ok & probably need plugs? I was hoping to just swap a coil. Too cold to do plugs & truck won't fit in my garage.
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I've noticed that on cold starts after work, or in the mornings in start up my Santa fe's really rough at idle.. I'd like to say even slight hesitation when I take off.. I notice a drop in RPM and lately harder shifts out of first..
My sf is the 3.5 AWD w/ nav it's a month old with 2900 Kms on it..
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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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I have a 2001 Elantra with 126k miles. For months it's been randomly hesitating, meaning I'll be riding along and suddenly the gas pedal will do nothing...then about 3 seconds later, VROOOM, the gas pedal will start working again. Recently, it's started stalling as well.
I've already replaced the MAP sensor, input speed sensor, throttle position sensor, spark plugs, wires, and coil pack. Nothing has worked, but it is getting progressively worse (it stalls more frequently, and the gas pedal becomes suddenly unresponsive more often).
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I am having a slight hesitation problem on my 2002 gls. When the car is cold and I am shifting with low rpm there is a slight hesitation untill higher rpms then it seems to clear. I wouldn't say a "stutter" or enough to "buck" the car but definitely noticeable. The strange thing is when the car gets up to temp it seems to stop. Almost like a carb on an older engine.
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2003 Hyundai GLS
Starts fine, loud motorboat like noise ... then car hesitates when put in any gear for a few seconds before moving ... then drives fine. Slight shutter at low speeds 30 and under....hit the expressway and its all good. Is that the fuel pump, a relay, what? It has a brand new radiator, gasket, thermostat and cover...so its not the cooling system.
Also...the check engine light is on, the pcm code says its only issue is the cat con...I don't think this issue is related cuz it was already on when the radiator killed in the middle of the highway....the noise is new. The hesitating isn't....that's been going on since before the check engine light came on....but its getting worse.
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My 01 alero 2.4l has some hesitation at takeoff, i have changed the plugs, boots, and fuel filter, and used fuel system cleaner. What could be causing this?
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I have an 01, early model, AWD Passat wagon, v6, GLX and when I accelerate from a standstill or a slower speed, the car hesitates slightly and coughs(?) and then catches on and accelerate. It doesn't actually backfire or misfire.
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My 2003 Elantra has multi spark (quad) electrodes? I have a hesitation on acceleration problem. Also feel resistance when pressing the gas pedal. I am going to change the plugs and wires. Just wondering if the type of plugs may contribute to the problem.
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We have a 2001 E320 4-Matic. Recently, it has developed a serious problem. Every now and then, when I come to a stop (e.g., at a red light), the car would shake/vibrate significantly. Even more importantly, the car seems to lose acceleration suddenly and unpredictably (not necessarily correlated with vibration at the stop). The latter problem goes away "for the moment" by switching off the engine and then restarting it. The Check Engine light has come on as well. The codes that are diagnosed are P2001, P2003, P200F, P2082, P2050, P20151, P2055, and P2053.
While there are several issues with the car, I am most concerned now with the two issues I highlighted above - sudden loss of acceleration and the vibration while stopped (both happening unpredictably). I took the car to two mechanics. The two mechanics seem to sharply differ on how to resolve the "sudden and unpredictable loss of acceleration" issue. One mechanic (Mercedes dealer) attributes the problem to issues with EGR valve and claims replacing that will fix the problem. The other mechanic attributes the problem to the Catalytic Converter which he says is broken and is causing sudden loss of acceleration (and yes, there was a rattle some time ago). The second mechanic does not disagree that the EGR valve (and the secondary air injection system) has issues but he says it is the Catalytic Converter which is causing the core problem of sudden loss of acceleration (and yes, there was a rattle some time ago).
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2003 Santa Fe GLS 3.5l with 170k.
Been working OK up until about 2 months ago when I would notice a brief hesitation every once in a great while when driving. It became hard to start - would crank well but just took about 5 seconds to finally start. Recently, I was on the highway and it jerked at about 65mph but did not cut off. Once when I was at a traffic light, it shut off completely but started right back up again. I was convinced that it was a crank or cam position sensor as I had dealt with a similar issue with another car years ago. It also seems to start right away when the temps are in the single digits - when they get higher than 25 or so, hard to start again.
I bought a new crankshaft position sensor because all the posts I've read point to that being the problem given the symptoms. I haven't installed it yet - still looking into this and wondering where it is! I'm thinking that it might be more fuel-related now though because after I started my car after work yesterday (it went all day without being started) it was hard to start but this time it was if I hadn't started it in 3 weeks. It kind of sputtered until I gave it the gas enough where it would settle out. Fuel pressure regulator? I hadn't thought it would be fuel-related (pump, pressure regulator) because 99% of the time, the car works just fine.
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Santa Fe - 2004 - 2.7 liter automatic fwd.
I am experiencing an occasional jerking or hesitation while sitting stopped at lights and it also has a tendency to do the same as I begin to move from a stop at times. It almost seems like the transmission slipping or something but likely more engine related I think as I am at a stop. I have felt this slightly while at speed as well but not that often, at least not yet. It also seems more noticeable as the weather get warmer as was very noticeable late last summer and did not present itself again until spring.
Also-I have read that some threads re stalling issues(not exactly what I have) that can be related to the crankshaft position sensor and also read somewhere a while ago about an issue re the ecm needing reprogramming but have not found that recently.
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