Accent LC (2000-05) :: Hesitation On Acceleration After Lengthy Idle And A/C On


Jul 26, 2015

I have a 2005 Hyundai Accent with the 1.6L in-line 4 cylinder engine w/ 160K miles. Over the last few months, I have noticed that when I run the A/C, the car has been at idle for a while, like at a stop light or in park at idle, and I have been driving the car for awhile in the afternoon (summer here), the engine sputters and hesitates on acceleration. The engine makes a pinging, sounds as if it's misfiring and then bolts like lightening, especially when I turn the A/C off. The mpg has declined. I barely get 21 mpg. The car does not have an inline fuel filter, only the "sock" in the tank. I have changed the spark plugs, plugs wires and have run two cans of Sea Foam FI cleaner through the fuel system and the problem still persists.

I am clueless to what could be causing this other than my injectors are still dirty and need a heavy duty cleaning. Could it be an alternator problem because I have noticed the dash lights and headlights get brighter. Could the ignition coil be going out. The car idles fine and the problem disappears when I shut the A/C off and only seems to do this when the weather is hot!

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Accent LC (2000-05) :: 2002 - Hesitation Under Hard Acceleration On Lower RPM

I have a 2002 Hyundai Accent with a 1.5L SOHC and manual transmission, with 207,000 trouble-free miles on it.

I have recently noticed a hesitation under acceleration. It happens most frequently under hard acceleration under lower RPM, if I'm close to lugging the engine. The engine "hiccups," almost like it is missing a cylinder. It will hiccup 2-3 times until engine RPM's increase, then smooths out.

What the cause may be? Last changes: Plugs at 175K; Plug wires @ 160K, Fuel filter @ 100K, Timing belts at 60K, 120K, 182k. K&N air filter cleaned at 50K intervals, last time @ 200K.

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Accent LC (2000-05) :: Loud On Start, Idle And Acceleration

I have a 2005 Accent with just over 35,000 miles on. Last night (in extreme cold here in Chicago), the car started running loud. Loud on start, idle, and acceleration - normal when maintaining speed, even at highway speed.

Since the loud sound first started, I have driven about 100 miles (had to for work, no choice). The sound is pretty much the same - definitely in the front end, and the best way I can describe it is a much louder version of the normal sounds you would hear - idle sound but louder, acceleration sound but louder, etc.

No warning lights have come on, car hasn't shown any signs of overheating on the gauges, etc. I had a somewhat similar issue with an old '99 Saturn SL2 w/ 115,000 miles - but in that instance the flex pipe had corroded and completely separated from the rest of the exhaust system.

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Accent LC (2000-05) :: Rough Idle And Bad Acceleration - Puffing / Rumbling

I'm an Accent 2000 gs owner and since a few days i had this problem. It has a bad idle and looks like it will stall... need to give some gas to stay alive.

Bad acceleration too, it misses some gas. (puffing, rumbling, shaking a bit). After accel, it's ok until the next red light.

Now I can't even drive cause it's worse. (too difficult to accelerate). Is it a sensor?

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Accent MC (2006-11) :: Hesitation Or Stumble On Light Acceleration That Come And Go

My 2011 stick shift no air Accent has a hesitation or stumble on light acceleration that comes and goes. It may not occur for weeks then re-occurs. It is hard to reproduce intentionally. It never occurs in cruise. The CEL is not on. Most often occurs at 1400 to 1500 rpm with slight acceleration or a slight increase in load as coming to a slight hill. I tried injector cleaner a few times and changed air filter. It seemed more reloaded to induction airflow so I changed the MAP sensor. I understand the 2011 Accent does not have a MAF sensor. It is still occurring. It is fine in steady cruise as well as in hard acceleration. I am wondering if it is a TPS sensor problem. It has 60,000 miles and otherwise runs fine.

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Ford Excursion :: Hesitation On Acceleration And Rough / Sporadic Idle

V-10 getting a weird hesitation on acceleration and rough, sporadic idle. Fuel filter is brand new, spark plugs only have 8000 miles on them. If im just cruising and give it just a little gas it gets real rough and wont smooth out unless I give it more gas. What else could it be? Coil packs?

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Ford F-150 - 1997-2003 :: Stall At Idle / Hesitation When First Pressing The Gas / Loss Of Acceleration

2001 F150 V8 4.6 Liter... I've been experiencing hesitation when first pressing the gas, stall at idle, RPM fluctuating between 1000 and 500 at idle and loss of acceleration. Had the truck read at autopart store and received a P0402 error and misfire is cylinder 8.

At this point, I've changed the the plug, COP, EGR valve, EGR Valve Solenoid and DPFE sensor and still have the exact same symptoms. I've also changed the plug for cylinders 5,6 & 7 as well. The check engine light is on, went off briefly after changing DPFE sensor, but back within a day.

Given the fact the error code is P0402 and some of the threads I've read, I thought the issue was centered around the EGR system, but I've replaced many of the components.

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Accent LC (2000-05) :: Hesitation And Sputter At Times

I have a 2005 Accent Manual, and my check engine light came on a little while ago. So far since then, my car has started to hesitate, and sputter at times. It just doesn't run like it used to. I have owned this car for four years, and it now has 117000 miles on it. I went in to one of the automotive stores in my area, and after telling the gentleman that works there about my car, he sold me some spark plugs, and spark plug wires, because I have never replaced them for as long as I have owned the vehicle. I did and it still sputters and what not. So I went back in and they hooked up their machine to my car and printed off these codes:

P2401
P2419
P2405
P0036

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Silverado :: 2000 Tahoe V8 - Hesitation Or Stumble Under Acceleration Or At Steady Speed

I have a 2000 Tahoe with the 5.3L V-8, 351,000 (yes that is correct) miles. Runs great except it has recently developed a stutter, hesitation, skip, I don't really know how to describe it, under acceleration or at steady speed. This is an intermittent problem and it is driving me batty. The only codes are a P0420, maybe after 350k miles it needs replaced? Would that possibly cause this issue, or am I looking at something more sinister?

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Ford F-150 (2004-2008) :: Engine Vibration / Miss At Idle - Slight Hesitation During Acceleration

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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Ford F-150 - 1997-2003 :: Slight Miss / Rough Idle - Hesitation Or Stumble On Acceleration

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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Accent LC (2000-05) :: 2000 - Misfiring Upon Acceleration And Engine Revving

I have a 2000 accent. Automatic tranny with 167000 miles. My current problem is the car is misfiring upon acceleration and engine revving. I have to accelerate very slowly to minimize this but i once the engine revs up enough I can give it more gas and it will rev normally with plenty of power. I have had to unplug the maf to keep it driveable. Ive never had a car stay running after disconnecting the maf so this is strange to me. My accent barely stays running with the maf connected. I just got the car from my dad and he had it fixed and it ran good for awhile with the maf connected so I don't think it is the maf. But the same problem came about and we had to disconnect the maf again. And he cant remember or is not sure what was exactly fixed on the car. I've read up about the purge control valve and havent had a chance to check it out but some of the symptoms fit.

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Accent LC (2000-05) :: Cylinder 3 Misfire / Massive Hesitation Under Heavy Throttle

I've got a 2000 accent 1.5, and I keep getting a code for a cylinder 3 misfire, when I change the spark plugs, it runs great for about 50 miles or so, then back to square one again. I just changed the coil pack the other day and there doesn't seem to be much of a difference. It has massive hesitation under heavy throttle, and the check engine light begins to blink if it sits and idles for too long. I've scanned it multiple times and it's always been cylinder 3, so it's definitely set on that one... I'm about stumped on what this could be. Also, the previous owner said that after a hot day of driving, the ECU fuse under the hood will blow out, what could cause either one of these things?

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Accent LC (2000-05) :: Some Hesitation When Start To Go And While Driving - Codes P1123 And P1128

I have an 01 accent with a 1.5 engine. Coming up with codes P1123 and p1128. I sprayed manifold with brakekleen and didn't get. Any change in Rpms. Also sprayed maf sensor with maf cleaner. And still have same problems. Some hesitation when I start to go. And while I'm driving. My gas mpg is 25 mpg which seems way low. I just bought car and next day engine light came on with above Codes.

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Accent LC (2000-05) :: Stumbling On Acceleration

2002 accent 1.6 motor and 5 speed,when I take off the motor sputters for a moment then is fine and if I let it slow down in any gear and step down on it it will sputter again then is fine, so far I have changed the plugs and air filter cleaned the throttle body and MAP, the wires and timing belt were changed out not long ago, took it in and hooked the machine to it and it said misfire bank 1 oxygen sensor upstream so replaced it and still have the problem, the body has 200,000 on it and the motor 100,000.

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Accent RB (2012+) :: Car Started To Surge / Rough Acceleration Or Idle

While driving on the freeway my car started to surge as if it was starving in fuel. I had to press more gas to go the same speed. My gas tank was at a 1/4 full so I pulled into the gas station to fill in gas. As I was leaving my car could not accelerate while pressing the gas pedal. I could floor the gas and it would go only five miles an hour! The engine temp was okay, no engine lights, and no weird smells. I was fortunate to be close to home and slowly made it letting cars pass me on the side. I called the road side service who towed my car to my dealer. They checked for codes, ran fuel injector cleaner twice through the system, checked the fuel pump, and the pressure on the fuel system, no problems. The third day they gave me a Sonata for a loaner and I allowed the service manager to drive my car to see if the problem reappeared. No problems found and I picked up my car today. The problem hasn't reappeared yet but I am keeping track of any rough acceleration or idle.

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Accent MC (2006-11) :: Rough Idle - No Power Or Acceleration When Driving

I have a 2008 Accent SE and I'm having some issues... The car was driving fine the other day all the sudden check engine light came on started flashing then and just stayed on. This happen before and the car was under warranty so the dealership fixed it but now it ran out and it's happening again. Anyway the car is running very rough at idle like the car shakes and acts like it doesn't want to run. Also when driving it honestly feels like the car has no power or acceleration what so ever. I replaced the air filter with a brand new K&N filter, I also changed the spark plugs today. I put NGK's in and the problem is still the same. I had it hooked to a code reader and it said I had a misfire in cylinder 2. I thought the plugs would have fixed it but I guess not.

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Accent LC (2000-05) :: CE Light Came On - Sluggish Acceleration

I drive a 2001 Hyundai Accent. About a month a go the CE light came on. at first, the car was driving fine so I thought nothing of it. Then I started noticing that the acceleration was sluggish and when it finally accelerated, it basically slingshot forward. What could be wrong. There's no smell, rattling or anything else. The only thing I noticed was the engine was a bit louder.

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Accent LC (2000-05) :: Motor Struggling From Low RPM Acceleration

My problem is this: when I am driving and press the throttle hard from low rpm (anything under 2000-2500), the car will struggle to pick up rpm, and be incredibly sluggish to accelerate, until it reaches around 3500 rpm, at which points it returns to normal. Whilst it is struggling to accelerate, the exhaust sound is almost like a subaru, in that there is a series of small burp noises which stop once it returns to normal acceleration. It only whilst attempting to accelerate from low rpm that I have this problem, i.e. idle plus mod-high rpm is fine.

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Accent MC (2006-11) :: Idle Bogging - Early Acceleration Is Lacking Power

My mom has a 2011 GL Hatchback about 20k km's... She decided to take my car this Saturday without telling me and I was stuck with hers.... All of a sudden the check engine comes on and at idle there is like a bogging going own. (Shaky putt-putt-putt-putt) early acceleration is lacking power and it smooths out at higher rpm's.

I can do minor things on my own like plugs and brakes, I would love to be able to get it running smooth again.

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Accent LC (2000-05) :: Revving With Poor Acceleration With New Clutch

I have just changed my clutch and machined my flywheel on my 1.5ltr 16v dohc 2000 lc accent. I used all the correct trans fluid and refilled and bled the clutch fluid. It takes of from lights like a new car but if you put your foot down around 40kph it revs out a bit and does so through all gears untill you reach a bit of speed. What is going on?

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