My story so far: It first happened to me on trip home after purchase, but I thought it was a rough patch in road stupid me. Driving my high anxiety mother to pick up medicine and we go down a hill and the car hesitates. Vehicle Speed Sensor Description & Related Information. car stutters and hesitates at about 45 MPH when i hold the peddle at about 45 mph the car act like it want to quit. How To Perform A Coolant Flush On Your Ford Vehicle - Duration: 10:11. The only odd concern is that at 30 MPH (the first time I drive it each day), there is a. No wiring needed to the VSS (vehicle speed signal). I took it to the Chrysler dealership and they replaced the cam and crank sensors and gave it a clean bill of health. If I cruise at 45-50mph it is a continuous problem. BMW Vibration and Thumping or Shaking While Accelerating – Center Bearing or Flex Disc. My 2011 200 has been stalling when I attempt to take off, I took it to the dealer last year and again yesterday. If you have Hesitation and surging on Blazer 4. Was out running errands today, when all of a sudden my service engine soon light came on, and my car started sputtering. Car hesitates on highway when going up hill? My 2000 Pontiac Grand Prix has been acting a little strange lately. I pull over for a second and put the car in. Call (215) 793-3700 for more information. They also recommended I replace the spark. 904 mph at the wheel of the #62 car. Here's a look at some hurricane heroes who didn't hesitate to help others during a time of need. the car fires up and goes into any gear without hesitation for about. I press the accelerator and it wont even go over 10 mph. Trouble Code P0100 P0104 P0171 P0172 P0174 If you replace or clean your Mass Air Flow Sensor it might take up to 50 miles of driving for your check engine light to reset and turn off. 05 s ?] World Record, not official 1 Mile Standing Start: 201. I noticed between 20-45 mph it hesitates bad. Get the best of HowStuffWorks by email! Keep up to date on: Latest Buzz · Stuff Shows & Podcasts · Tours · Weird & Wacky. To secure a car, we ask for a nominal $500. I have yet to go in for the first service or the hybrid battery SW update. Took the car to the dealer to have it checked out because I though it was the transmission. if you floor it the cart dosnt hesitate anymore. Chance of snow 60%. So Sunday we packed up and headed back home, and about 30 mins into the drive traveling about 45 mph the engine started sputtering. (Page 1 of 3). Engine loses power for a brief period (3-4 seconds) between 25-30 mph consistently. I am having a similar problem but only at 60 MPH. In early fall the truck started making what I can only describe as a mild and inconsistent "stutter" upon accelerating between 40-50 MPH. Mine did this too, and after having it scanned at a garage, it turned out to be the speed sensor on the transmission. I noticed it only happend in this speed range and only on one specific entrance of highway. But only every once in a while. 8-liter engine, automatic transmission and 156,000 miles. Car passed inspection/emission with no problem Trying to sell the car but this is the only problem. If this timing becomes misaligned, the engine can experience low power and hesitation. My 1999 Lincoln Town Car developed a miss today, found out it was nothing more than a coil that had gone bad, an easy fix! It really was jerking when accelerating or going up a hill! Tools I used. No wiring needed to the VSS (vehicle speed signal). with typical Japanese-car ease; operating smoothly at low speeds before launching into ferocious acceleration. 6L triton engine? ACCEL COIL ON. shaking subsides at around 45 mph. 2002 Lincoln Town Car Hesitation between 35 and 45 MPH. Any idea what could be causing this as it only started to do this within the last week. I very much enjoyed it. first the basics. And can someone let me know what is the normal operating temperature for a chevy impala. A stuck caliper starts to shake at 40 to 50 mph, and the vibration becomes worse with acceleration. BMW Vibration and Thumping or Shaking While Accelerating – Center Bearing or Flex Disc. I just bought a 2002 f-150 4. Here's a look at some hurricane heroes who didn't hesitate to help others during a time of need. Going up the hill is sluggish 5. over speed alarm. 00 Postage Please do not hesitate to leave us your 5 Star. Re: Can bad spark plugs cause hesitation between 45-50 mph? I'll defer to those with more knowledge, but as sophisticated as cars are today, it should be showing a code. The battery warning light is. If the car is running under AutoSteer when it hits one of these sections, the car immediately slows down, because AutoSteer. The problem is this: when driving between 35 and 45 mph, the car feels like it's hitting rumble strips. that's because when the torque converter locks at 45 MPH it's a direct connection from the engine, to the wheels basically. super slowly and not more than to 60 mph, unless on downgrade. Basically - part throttle, light load, slight grade or hill. Hi,Ive had my 72 Cutlass S for about 6 months. No redline, just a steady acceleration. A car hesitates when accelerating is a symptom that shows an imperfect internal combustion in your engine. SOURCE: 97 concorde with 3. But determining the root cause of that wobble or shake might not be as difficult (or expensive) as you may think. Im having to work with the car harder to move it 8. 7 has had new ball joint top an bottom. with all similar. I repeated this a few more times and it seems that the shaking starts around 50 mph and the faster I go the worse it gets. Throttle position sensor (TPS) location, inspection, removal and replacement. I have a 2006 F-150 XLT 5. Above 25 mph the car begins to cut out, sputter, hesitate and spits and misses. 2007 4runner sport 130,000 miles 6cyl bucks or jerks at around 45+ mph under slight acceleration noticed mostly on slight uphill grade. by jsg13 | December 27, 2010 3:45 AM PST I see this is an old post, but I had a very similar problem with my '97 GC several years ago. It is particularly noticeable when driving about a mile on. Contact us or visit our showroom today. For the first time yesterday I noticed it sputtering at highway speed (60-70mph). Recently I experienced a "hesitation" while passing through 55 mph, usually "under load " as in going up a small hill. Hesitation/Surging 2400 to 3000 RPM and 15-30% throttle Hey guys, 07 STI, stage 1. The car is bogging on and off and there is a bad hesitation on the acceleration. Hesitation at this speed does not mean that the engine is only hesitating at this speed and THIS IS THE TRICK. Also, I do not have any hesitation in 1st and 2nd gear until the car passes 35 mph and go in higher gear. Then the car stalls. This was significant enough for Toyota to issue a Factory Service Bulletin (FSB) and later revise it. Reasons For a Car Going Slow When Putting On the Gas by Keith Evans A properly tuned car should spring to life when the driver presses the accelerator, but some vehicles return only sluggish performance even with the gas pedal fully depressed. (Page 1 of 3). I have a 2004 Ford F150 FX4 and I've been having a (hopefully) minor problem for the past 15k miles or so. To secure a car, we ask for a nominal $500. Car jerks while accelerating. I'll be driving on the interstate at about 70 mph and i'll hit a large hill. This is one reason why you should change all your spark plugs at the ame time, even if some have a little life in them yet. It was 45 years ago today that Buddy Baker broke the 200 MPH mark for a closed course with a stock-bodied car, driving a Dodge Charger Daytona past the mark at Talladega. 4th seems to have good power at those speeds. why does car hesitate around 40mph and starts to jerk. that's because when the torque converter locks at 45 MPH it's a direct connection from the engine, to the wheels basically. My brother thinks its the spark plugs. There are two main probable causes, but first we need to know more about your Jeep (e. around 40-45 mph the vehicle starts to stutter/shake when changing gears. Rumbling and whirring noises at speed over 20 mph, moreover, can be the result of worn carrier bearings. The car shutters as if it is about to shut down- very dangers, especially when turning left on a divided street or highway without a signal light. I have a 1994 Grand Marquis with 123,000 miles on it. Why would a Crown Victoria hesitate when at 45 MPH during an acceleration? My car only hesitates while accelerating and only at 45 MPH. Even though the speed to begin braking the 3,400-pound BMW sedan was 20 mph higher than the 50-0 mph braking tests we conduct at Tire Rack, the braking forces developed by the new tires felt reminiscent of full tread depth tires we've experienced on our home track. The faster car is travelling 45 mph - 30. So if it is the O2 sensor will the car start to accelerate again and help the speedometer go past 30 mph. I installed new spark plugs and had a motor mount replaced. Guessing you have an auto transmission. At 80mphit feels like its taking forever to getup. Do Hondas have a hesitation problem? The problem we are having is that when you approach 40 MPH the vehicle begins to hesitate/buck/shake and does not accelerate smoothly. The car involved is a 1999 Dodge Caravan. New fuel filter, fuel pump and computer installed first and a cleaning. We took the car to the dealer where we purchased it and they were unable to find anything because there were no codes present. BMW X3 hesitation on acceleration can still feel the car start to move, then "hesitate" from the shift, and then take off. When I say miss, I mean the car buckles and hesitates. Fuel economy wise, the different Octavia models produce between 45. We have had it to the mechanic 5 times (3 times to Subaru dealer) and, of course, the problem will not showcase itself during these visits. When I drive from 45-50 mph, it stops. It developed the hesitation about 1500 miles ago. At speeds of 70 mph, it would stall out completely. The 2015 Jeep Cherokee has 28 problems reported for jerks and hesitates. I took it to the Chrysler dealership and they replaced the cam and crank sensors and gave it a clean bill of health. Like if going but it doesnt want to keep going. 2005 Trailblazer LS 4. In All Other Aspects, Car Performs As It Should. stock or lifted) and how you would describe this "shake". Average failure mileage is 21,250 miles. Today, 6 days later, I am experiencing extremely rough shifting, especially at around 40 and 60 mph and very bad hesitation where the entire vehicle vibrates and does not seem to know what gear to be in. 3 4x4 etc I have a problem that is driving me nuts trying to figure out. reading online. 7 km/h), with the accelerator pedal still released, motor braking will be deac- tivated and the vehicle will coast freely. Reply 1: First thing you need to do is. Throttle position sensor (TPS) location, inspection, removal and replacement. 30-40 mph the car jerks and bucks. up vote 17 down vote favorite. Below 60mph everythings fine. That s when I noticed from about 30 mph to 65 mph the rpm. Is there any reason why ?. In the past, with the hesitation I was able to manage an absolute MAXIMUM of 27 MPG on the highway, taking it very easy. Neutralized and revved thinking possibly a blow off will door the trick, but the car kept throwing off the rev in split seconds as I held the pedal down. To allow for sufficient brake time, reduce your speed to 45 mph at night―or even down to 30 mph when roads are icy. why would a 2003 Monte Carlo hesitate between 30-45 mph The blockage of the air filters can also cause the car to hesitate when accelerating at speeds below 20 mph. 4 base and I have a problem where I accelerate my car sort of hesitates, kinda jerking a bit. Vibration when the transmission is loaded but not moving (car in drive, brake on) I performed a Seafoam treatment through the PCV tube at that time. My 2003 Honda Accord started to shake sometimes when I tried to accelerate between 35 - 45 mph. Replace Spark Plugs. 2005 Trailblazer LS 4. Bucking/hesitation 2-3k RPM. SOURCE: 97 concorde with 3. The car is bogging on and off and there is a bad hesitation on the acceleration. 2 months ago, at 37743 miles, I encountered a problem with the engine sputtering when accelerating through 45-50 MPH. The Suzuki Hayabusa (or GSX1300R) is a sport bike motorcycle made by Suzuki since 1999. 4Ghz Radio 4WD Fast 30+ MPH RC Car, with 2 Rechargeable Batteries, Blue: Trucks - Amazon. “For some reason my car slowed down on the track and we only ran a 5. The engine hesitation on your Dodge may be created by problems in one or more components. A stutter occurs when combustion in the engine is disproportionate. Seems like its starving for fuel. My front end shakes when i get to 45 mph. Jump to Latest Follow 1 - 20 of 39 Posts Now, I do get a bit of a sputter or hiccup at about 40 to 45 MPH. They thought the tires needed to be rotated and balanced, which did not fix the problem. I mostly notice it when maintaining speeds between 40-45 mph uphill. Powered by a 3. Bucking/hesitation 2-3k RPM. I was told i. It happened to me a couple weeks ago. Took the car in for the CUE updates and told them about the hesitation, they wrote on the invoice "vehicle operating as designed at this time", "scanned pcm and performed stop and go road test-operating as designed" The mileage in and out on the invoice is the same so how could they have road. Autozone will do it free. The most recently reported issues are listed below. If I floor the gas pedal it'll hesitate, then take off full power for about 3 seconds and then completely loose power as if though the motor was shut off but if I let off the gas it will idle between 500 and 700 sometimes wanted to shut off. 1, 2013 Title 49 Transportation Parts 300 to 399 Revised as of October 1, 2013 Containing a codification of documents of general applicability and future effect As of October 1, 2013. It is particularly noticeable when driving about a mile on. Headlights have an illumination range of 200 to 250 feet. 4th seems to have good power at those speeds. Ford Taurus Engine hesitates during acceleration Inspection at your home or office. 6 cylinder, automatic, no engine codes, idle is perfect. 2004 Chrysler Pacifica 3. THe car idles. Chance of snow 60%. Mine did this too, and after having it scanned at a garage, it turned out to be the speed sensor on the transmission. My 1999 Tahoe has a hesitation or jerk beginning at about 50 miles per hour. My '93 325i has been "shuddering" (the entire car seems to shake) when I am between the speeds of 35-40 mph. Are you experiencing whining noise when accelerating your car to high RPM speeds? This seems to be a common problem with many cars. Common causes of car shake include:. Sometimes, your car loses power while driving due to a damaged air filter. The simplest and most obvious symptom of a failing crankshaft position sensor is the blinking “check engine” light in your car. The vehicle was taken to an authorized dealer and the failure could not be duplicated. Motor mounts are usually made of metal and rubber, and can be found nestled between the engine and the "frame" of the car. Further information from the customer indicated that the truck misfired the worse in drive, not overdrive, at light to normal cruise around 2000 rpm to 2500 rpm. why does it shake like that. These types of problems can be a pain to track down, and if the problem is an intermittent one, it can be months before the cause is found. 5 and then to 1. I need to update my prior statement. If I step on it it seems to go away. Replaced fuel filter. You'll notice that I'm driving about 80 mph, so the shake isn't that bad, but it is noticeable. I press the accelerator and it wont even go over 10 mph. 2Pcs 38mm 12V LED Courtesy Deck Light Marine Car Stair Cockpit RV Waterproof. I don't want to describe the gas pedal as sticking, but when I do accelerate when I am already at 45-65 MPH I perceive the feeling of a spring in the pedal. The contact stated that the failure occurred for at least three years. when you accelerate hard 0 to 70 mph you don't have this problem. My car engine hesitates when I accelerate! by zilog357 · Published July 9, 2010 · Updated February 18, 2019 S ometimes we experience an annoying hesitation or stalling when we are cruising in our cars and decide to accelerate either slightly or harder. We just replaced a new alternator, starter, spark plugs, speedometer sensor and battery still not wanting to operate correctly. Going Honda Odyssey - Vibrations at 22 MPH & 42MPH (CV joint, brakes, tires) - Honda and Acura -Car forums - City-Data Forum. If this timing becomes misaligned, the engine can experience low power and hesitation. It goes away as soon as i pass 5mph. My car [email protected] 45-50 mph. About 6 months ago, I had brought my car to an auto shop to have the transmission drained, flushed, and filter replaced. The Ford Escape is a crossover SUV with fold-down seats and plenty of cargo storage space. They did a few manual shift (Auto) pulls and said the car was strong. The tiny thing that keeps your car working, often falls prey to regular wear and tear, and therefore must be taken care of. I have used gasoline additive Lucas 3 different times. It has a 1. In the video below, you can see who the car shakes or vibrates when applying the brakes. then if i give it more gas it will go. 7L full size chevy blazer. when you accelerate hard 0 to 70 mph you don't have this problem. We have a 2008 G6 with a V6 engine. proclaimliberty2000 909,414 views. reading online. Have been to dealer three times. It is really noticable when pulling out and gradually working up to around 40MPH. 2005 Trailblazer LS 4. 0 V6 Sputters, Bucks/hiccups, when Cruising at around 40-45 mph. It will not always buck or hesitate once it runs rougher, but it will ONLY do it after the load, sound, and running rougher have started. My 2003 Honda Accord started to shake sometimes when I tried to accelerate between 35 - 45 mph. My 1999 Lincoln Town Car developed a miss today, found out it was nothing more than a coil that had gone bad, an easy fix! It really was jerking when accelerating or going up a hill! Tools I used. Took the car in for the CUE updates and told them about the hesitation, they wrote on the invoice "vehicle operating as designed at this time", "scanned pcm and performed stop and go road test-operating as designed" The mileage in and out on the invoice is the same so how could they have road. Sometimes even stalls out on me. The engine oil pressure light and the charging system light briefly flashes as my car is slowing down. and then the jerking happens at low rpms at all speeds but only after warmed up. However, other times the car has little to no hesitation and idles perfectly. My idle was so bad it started dieing on its own. What would cause my 1999 ford expedition to sputter after acceleration exceeds 45 mph There could be a few causes for a car to spit and sputter on acceleration. 4L V6 equipped car (Buick, Chevrolet, Oldsmobile, Pontiac). As the car approaches 40 mph, the RPMs will increase in the engine. 2Pcs 38mm 12V LED Courtesy Deck Light Marine Car Stair Cockpit RV Waterproof. This is less than the national average of $76. Our goal is to eliminate any surprises upon arrival. THe car idles. Car hesitates under load when in traffic going appox 40-45 mph. I had the trans checked which was fine and replaced the dist and wires and plugs yesterday - Answered by a verified GM Mechanic. Car stutters and hesitates at about 45 MPH When i hold the peddle at about 45 mph the car act like it want to quit. One of the O2 sensors was bad and we changed all of the other "code" sensors as well. Took the car in for the CUE updates and told them about the hesitation, they wrote on the invoice "vehicle operating as designed at this time", "scanned pcm and performed stop and go road test-operating as designed" The mileage in and out on the invoice is the same so how could they have road. ok guys it started last night while i was on my way to work. Buy IMDEN Remote Control Car, Terrain RC Cars, Electric Remote Control Off Road Monster Truck, 1:18 Scale 2. 05 s ?] World Record, not official 1 Mile Standing Start: 201. A clogged fuel filter can offer enough fuel for an engine to start, but lack in enough volume for. When I say miss, I mean the car buckles and hesitates. Signing up and participating in this event has turned into a tradition of sorts. They did a few manual shift (Auto) pulls and said the car was strong. No problems noticed when my. Q: I can't drive more than 45 miles per hour without hesitation Improper air metering or fueling can hinder engine performance. The speed sensor has failed twice in the past three months, consumer states when this fails, the vehicle can not be driven above 45 mph. While accelerating vehicle started to shake between 30-40 mph. | VIN: 3FA6P0PU8HR391236FP4621. Even more impressive was the Camry SE’s 45-mpg showing on our 75-mph highway fuel-economy run,. Hesitation at 40 mph VW I feel like the tiptronic has so much drag and spends all of it's time thinking the car should be in a lower gear that I tend to shift it. I am having a similar problem but only at 60 MPH. A visual inspection showed that new spark plugs, spark plug wires, ignition cap, and rotor have been installed. This week I realized that THE CAR DOESNT' GO OVER 50 OR 55 MPH and it hesitates a lot between shifts (it's an automatic). Car hesitates when taking off slow. Immediately after entering 4th, at that speed, the engine is experiencing a high load/high torque/low rpm condition and this is also where the car is most likely to exhibit a performance problem but especially when "something" is. I decided to do a service on the car. sulfur smell is a sign of a clogged catalytic converter. checked fuses all good changed fuel filter air filter. The car jerks when I gently speed-up from about 50 mph. 7 has had new ball joint top an bottom. com FREE DELIVERY possible on eligible purchases. I have purchased full tanks of gasoline from 3 different gas stations. 2007 4runner sport 130,000 miles 6cyl bucks or jerks at around 45+ mph under slight acceleration noticed mostly on slight uphill grade. Do Hondas have a hesitation problem? The problem we are having is that when you approach 40 MPH the vehicle begins to hesitate/buck/shake and does not accelerate smoothly. My problems started with a hesitation when I would go around and over 45 mph with slight pressure on the accelerator but would quit when I gave it more gas and changed to a higher gear. Like if going but it doesnt want to keep going. , - Toyota 2000 Camry Solara question. Took the car in for the CUE updates and told them about the hesitation, they wrote on the invoice "vehicle operating as designed at this time", "scanned pcm and performed stop and go road test-operating as designed" The mileage in and out on the invoice is the same so how could they have road. This shaking does not occur at 20 mph or 40 mph. Contact your Club Car dealer/distrib- utor to inquire about this selectable feature. In this case, use the procedure of Shift Lock. This isn't just the steering wheel shaking, though it does do that a lot. Nothing happens to the speed but the rpm drops and then again increases and then the car picks up speed. The most recently reported issues are listed below. A comparison test between the 2015 Audi A3 2. But once I get through that, about 45 mph, it runs great - plenty of power, I can race it right upto 70 mph and beyond. So, is this just something. Crown Victoria :: 2003 Hesitation Occasionally On Highway At Speeds Over 45 Mph At Freezing Temp Jan 12, 2016. I'm doing about 55 mph and I let it go down to 45 mph and set the cruise control. Car has been thoroughly checked and serviced a few times and they can't figure it out. Does anyone want to speculate on what it could be. The car will jerk real bad when driving at a steady speed and also when slightly accelerating. I have replaced the plugs, wires, cap/rotor, fuel filter, and air. Unfortunately I cannot figure out if this is engine or transmission related. hesitation at 50-60 mph on 99 tahoe Tahoe Car Forums. A car that hesitates or stumbles when accelerating can have dozens of different problems. I replaced spark plugs all but number 3 today didn't change anything, change tps nothin, changed air tempature sensor and no change. checked fuses all good changed fuel filter air filter. A car can also pull, which is similar to a jerk but is more gradual and is typically to one side. Drive car immediately after reconnecting battery, so the computer can re-learn the shifting pattern. It's difficult to explain without sounding crazy. I decided to do a service on the car. Jump to Latest Follow 1 - 20 of 39 Posts Now, I do get a bit of a sputter or hiccup at about 40 to 45 MPH. 4 base and I have a problem where I accelerate my car sort of hesitates, kinda jerking a bit. The car also seems to hesitate around 45 MPH if I accelerate really hard. At 80mphit feels like its taking forever to getup. We just replaced a new alternator, starter, spark plugs, speedometer sensor and battery still not wanting to operate correctly. 4th seems to have good power at those speeds. If I step on it it seems to go away. I am having a similar problem but only at 60 MPH. Another possible culprit is a faulty component affecting the air-fuel mixture like a bad oxygen. Did you find what you needed? We hope you did!. code p0300,p0302,p0303. Replaced TPS , EGR. The car can be fully operated by child using steering wheel and foot pedal controls or by parent via remote control. And if I want to reach 55 mph I have to press the gas pedal really hard, as if there is an incorrect setting somewhere. Watch Out! Here are the Symptoms of a Bad Throttle Position Sensor. 904 mph at the wheel of the #62 car. 4L V6 equipped car (Buick, Chevrolet, Oldsmobile, Pontiac). It idles quietly, and can drive under 45 mph. I very much enjoyed it. Hesitation/Bucking @ 45 MPH under very light acceleration Discussion in ' 3rd Gen - 2007 - 2017 ' started by skipppy75 , Sep 6, 2014. While driving approximately 45 mph the vehicle down shifted intermittently into a lower gear and began to lunge forward. The engine oil pressure light and the charging system light briefly flashes as my car is slowing down. My guess is either spark plugs or wires. The car shutters as if it is about to shut down- very dangers, especially when turning left on a divided street or highway without a signal light. The car will jerk real bad when driving at a steady speed and also when slightly accelerating. Research the 2017 Nissan Sentra at cars. This is the first time Ive. The reason why your car is jerking during ignition is because a car has as many spark plugs as it does fuel cylinders. Hello everyone, I have been looking all over the internet to figure out what is wrong with my 2002 CR-V. when codes come back it starts to hesistate again. Specifically, it will cost $45-$150 for speeding 1 mph to 10 mph over the limit; $90-$300 for speeding 11 mph to 30 mph over the limit; and $180- $600 for speeding 31+ mph over the limit. See the possible answers for Speed measurement for a car or cheetah: Abbr. The car shutters as if it is about to shut down- very dangers, especially when turning left on a divided street or highway without a signal light. Dealer kept car for 24 hours and flashed computer as well as updatef PCM/TCM programs. at that speed my rpms are at 1800 to 1900 respectively. (Freq 38-44 hz at 60 mph) As car companies innovate. Everything was working great. 32 Responses to “But Wait There’s More…. The dealer 2 miles from me wants to do the update firmware TSB for under 10MPH stop issue and start acceleration issue from a stop for $140 and said they don't know if it will fix the 40-60 mph issue and they need the truck for at least 24 hours since they are so busy lalalala and then they want to charge me $89 for a guy to sit in the truck with a laptop to trouble shoot the 40-60 MPH issue. A shudder or vibration may develop while driving at speeds between 35 and 40 MPH. This one makes the most sense. no check engine light. Immediately after entering 4th, at that speed, the engine is experiencing a high load/high torque/low rpm condition and this is also where the car is most likely to exhibit a performance problem but especially when "something" is. Car Sputters at High Speeds If your car struggles to maintain speeds of around 55 mph or higher without having periods of “sputtering” or shaky speed control, it could be an early sign of a malfunctioning fuel pump. The problem could stem from the ignition secondary system, which includes such parts as spark plugs, spark plug wires, distributor cap and rotor. Car jerks while accelerating. This feature is selectable. 957 mph) [28.