Car Jerks When Starting Up

Q: My car jerk everytime I start to speed up. Average failure mileage is 122,650 miles. My car jerks forward when coming to a complete stop, what could this be? I have a 2004 Acura RSX (automatic transmission with the option to drive it in manual mode) with 81,000 miles. Any engine will kick back if the crankshaft is turning slowly enough when the spark fires that it can't make it over TDC before burning gets underway. Moisture can accumulate inside the distributor cap that can cause the engine to misfire, which in turn causes the jerking. This could happen during acceleration, driving downhill, or gear change. I have noticed that when I am driving my car when the engine is cold, the car seems to jerk forward and back a lot if I am driving less than about 20-25mph. The car started to lose power, RPMs dropped, I feathered the accelerator to try and keep it running, and after stopping the foot action it stalled on the side of the road. According to the Samarins website, one of the most significant issues that causes a car to jerk is a faulty transmission. just load tested,all ex. The indication is apparent when white smoke appears while the car is running, but not when you start it. If it hunts like that it could be a lot of things but most common would be. The first step to take is to check the transmission fluid. It will crank and crank, but then takes forever to start. the car jerks backward from the 'Park' position after starting, like it's attempting to go into 'Reverse'. I pull up to the stop sign/light, and the engine shuts off like usual. running it at full speed does not have this problem. The jerking reaction you are experiencing may be related to a dirty or failing mass air flow. all new 4 gauge cables. The most recently reported issues are listed below. There is also a hesitation after pressing on the gas pedal - not good. Start with the easiest fix. The sensation goes away after warming up though or if I'm going 30-40+ MPH. Dirty injectors Bad plugs / Coil / Leads / Coil pack Dirty fuel o2 Sensor Throttle position sensor If you are doing your own maintenance run the fuel down to 1/8 tank and. It's been doing this intermittently for. A wet evening (fog, snow, rain, etc. Just a brief follow-up for clarification. Try starting your car after you fasten your seat belt. Recently acquired a sweet 2004 CTS-V and love the car. Why is my car jerking? So I've had my 2012 jetta sportwagen for a little over a month now and twice I've noticed when I first start up the car and drive it jerks forward at low speeds. My 2007 Honda CR-V drags during start-up in the morning and after parking it for long. To test this condition drive the car at a steady speed, then very lightly tap the clutch pedal, if the car responds the clutch is worn. Is that the fix itself, is it worth fixing, what is causing this problem. This happens when the engine is cold and when started next time it works absolutely fine. Start car, place in 1st, pull handbrake, dump clutch with no gas and the car stalled right out. The service leaves a lot to be desired and the insurance does not respond. had motor checked ok. Vacuum leak start small then become worst gradually because of the pressure inside the engine, the vacuum is one of the key factors in determining how much fuel is needed by the engine, if there is a vacuum leak the air/fuel mixture will not be in the right proportion thus making the car jerks when accelerating. car jerks when in gear at low rpm's? my car runs great and idles perfect but when i have the car in gear (anygear)at low rpm's like when im coming to a stop it jerks as if u were in first and not giving it enough gas please help. com : Car complaints, car problems and defect information. Try to encounter as many red lights and stop signs as you can on your test drive. and when my car starts, and dies, it will crank but not fire up. My car is a Buick Century Station Wagon with 82,000 miles on it. Chevy HHR Complaints Still Coming In I’m just now starting to feel the jerk in my 2008 HHR the light went away but this morning I went to go start my car to warm it up and the engine. You say the engine RPM doesn't go up but the speed increases as the throttle is pressed. I had to pull over, hazard lights, turn it off and re-start the car and then it was fine again. My 2007 Honda CR-V drags during start-up in the morning and after parking it for long. How to repair Bad idle speed problem in car. A tire damaged by a piece of metal or glass will cause the car to run out of alignment. but as of now. and then the jerking happens at low rpms at all speeds but only after. Everytime i step on accelerate on the gas pedal, i look at the RPM dial and the needle jumps to 3, then the car has these slight jerks and as it jerks, the needle drops from 3 to 2. It jerks when I accelerate and decelerate pretty badly. This only happens when I am sitting still, not moving. If you don't have enough fluid then top it up. How to stop car hesitation DIY with Scotty Kilmer. My car is acting the same exact way, "ran fine until the next morning, on starting the car up now it misses and lacks power, if I turn it off and on again it runs fine again, until next morning it dose it again, is it just fuel filter do you think? Thanks" My car will occasionally crank and crank before starting. There are many things that could cause a car to stall, with solutions ranging from simple to complex. Start with the easiest fix. When I start car it starts fine but when I take off usuall when I put in second gear it jerk acts like it wants t cut off but once I get enough speed to shift into higher gears like fourth and fifth it drives fine why does it do it?. While driving on highway I experience jerking then car automatically slows down even while pressing gas also jerks speeds up, then jerks again after I come to a complete stop at red light or stop sign the car shuts Off and steering wheel locks!Please tell me wats wrong because I have payments and driving is very uncomfortable on highway with. Vacuum leak start small then become worst gradually because of the pressure inside the engine, the vacuum is one of the key factors in determining how much fuel is needed by the engine, if there is a vacuum leak the air/fuel mixture will not be in the right proportion thus making the car jerks when accelerating. My car started jerking and juddering therefore I done a full service ie changed the spark plugs, air filter, oil filter, oil, brake pads and brake discs. Im literally thrown towards the front of the car. It's been doing this intermittently for. and it happened to me on the freeway while going back home from work. If a car begins to jerk more frequently over time, this could be from a vacuum leak in the fuel system. It does not do this all the time, but enough to concern me. How to replace ignition coil and spark plugs. If your car jerks when you accelerate, it can be a sign of moisture or probably something wrong in its motors. and when my car starts, and dies, it will crank but not fire up. How to repair Bad idle speed problem in car. It often runs fine without jerking if you stay easy on the accelerator, but as soon as you race it, the car starts jerking. When a car is cold, it idles at a higher speed until the ECM reduces the idle speed as the sensors heat up. i purchased a 2014 ford focus used with 86k miles, upon taking delivery of the vehicle we noticed while driving the vehicle when starting from a complete stop the car jerks and bucks. manual transmission. Vacuum leak start small then become worst gradually because of the pressure inside the engine, the vacuum is one of the key factors in determining how much fuel is needed by the engine, if there is a vacuum leak the air/fuel mixture will not be in the right proportion thus making the car jerks when accelerating. It is very easy to check. Why is my car jerking? So I've had my 2012 jetta sportwagen for a little over a month now and twice I've noticed when I first start up the car and drive it jerks forward at low speeds. Car jerks as I begin to accelerate. If you have any questions about your V6 Mustang or just want to connect with other V6 Mustang owners around the world, you have found the best place on the internet to do that. Anyone know why it's doing this?. I have a 2004 Honda Accord EX with high mileage and I typically stay on top of repairs needed for the car. A car can also pull, which is similar to a jerk but is more gradual and is typically to one side. Dear guys, I am recently experiencing a problem with my car that it starts to jerk after 1 minute when starting the engine. That's what was missing this morning. A damaged tire will cause a car to pull or jerk to a side when driving at medium speeds. Car jerking during deceleration while in 1st,2nd, and 3rd gear. When the car starts off cold and warms up, there isn't any jerking. Cars often jerk when accelerating, after being left outside in cold, rainy temperatures. Shuddering from a start or going up a hill is a loose/worn drive belt. club car jerks when moving forward whats wrong ? cart jerks when moving forward but is smooth when backing up. This type of car jerk is very common in a manual transmission, especially for those who are just starting to learn how to drive and mostly happens when you are trying to shift from the first to the second gear while you speed up. this happens most of the time, from when i start up and put into drive, to when i put back into drive from having it reverse, the car jerks foward. i have a 2010 club car precedent (electric) which starts up with a jerking motion and will continue to do this when attempting to run at a slow speed. Sometimes it feels that car might be stalling. It does not do this all the time, but enough to concern me. To summarize, it hesitates and jerks under around 10 mph, but once I'm going, it drives just fine. After the issue was resolved. The experts at AAMCO Colorado can help you diagnose your car and get you back on the road fast. This started happening last month. I've cleaned all pipes thinking of blockages but problem persists. Every other. I feel like all these symptoms are related somehow. Once you know at which step things go wrong, you will have a better idea why your car won't start and what to do. Cart "jerks hard" on start I've got a 97 CC that "jerks" into motion when the throttle is pressed. Diagnosing car problems yourself may seem like an impossible task, but try to think of it in terms of your own body. When this occurs, the drivers side keypad that controls windows, seat presets and the electric locks won't. It seems the clutch release is too fast. Unfortunately, you won't see the source of the problem when all of a sudden the system fails. Or else, when your car is lacking coolant, the car may heat up and exhaust white smoke. My car jerks forward when coming to a complete stop, what could this be? I have a 2004 Acura RSX (automatic transmission with the option to drive it in manual mode) with 81,000 miles. new v glide. However, I'm not sure if the previous owner has ever flushed it or not. new rear end. Start-Up Problem: One of the most common symptom of bad ignition coils is start up problems, especially cold starts. It will eventually throw fault some codes or not start at all or just stop on the hwy. This article will help you to pinpoint and solve the jerking problem of your Honda Civic. Back when carburetors were king and fuel pumps were mechanical, power loss usually came down to vapor lock or a clogged fuel filter [source: Goms ]. club car jerks when moving forward whats wrong ? cart jerks when moving forward but is smooth when backing up. To me it kind of feels like the first gear is waiting to catch and then it catches and it jerks. Nothing happens to the speed but the rpm drops and then again increases and then the car picks up speed. For a short whike the jerking stopped. This only happens when I am sitting still, not moving. Page 1 of 7 - Car vibration at idle after engine start - posted in Maintenance & Repairs: I'm getting this quite regularly now. I have to almost come to a complete stop and then try to go again until it stops. Cars often jerk when accelerating, after being left outside in cold, rainy temperatures. a small evap leak would not cause your car to jerk. When starting, in instruments cluster car showed 18C outside. If the car jerks when the RPMs go up, this is a sign that the filter needs changing, typically at a service station. Whether cold or hot outside (I live in Florida) at the initial cranking up of the car and reversing, the car will reverse then when I switch it to Drive, remove my foot from the brakes to give it gas to move forward, the car will stay idle for about 5 seconds then jerk forward. new batteries in june. Car jerks when staying still with foot on break & accelerating. This is the result of moisture building up in the distributor cap, which produces an uneven electrical current, and the engine misfires. Re: car hesitates/jerks while driving Sign In it feels like a delay in accelteration. Hey guys, im driving a vios and for the past few weeks, my car will start to hesitate especially when i accelerate hard from stop. It jerks when I accelerate and decelerate pretty badly. i purchased a 2014 ford focus used with 86k miles, upon taking delivery of the vehicle we noticed while driving the vehicle when starting from a complete stop the car jerks and bucks. A car can also pull, which is similar to a jerk but is more gradual and is typically to one side. A jerking car when starting, accelerating, and driving really has a serious issue. Then feel small jerk when it changes. 2- 85000 miles. Changed my oil, car now slightly jerks after being put into drive and also sometimes when accelerating after complete stop. Have to put the car in neutral when at a stop light or sign. had motor checked ok. Car jerks/studders after fill-up For almost the whole time of owning my 01RS (bought w/ 63k in Dec 03), the car does something very unusual after filling it up. Spark plugs and ignition coil. It sounds like I have the same issue with my 2012 GMC 2500 HD with the DuraMax and Allison transmission. I have a 2004 Honda Accord EX with high mileage and I typically stay on top of repairs needed for the car. com will try to tell you why a car jerks when accelerating. Re: car hesitates/jerks while driving Sign In it feels like a delay in accelteration. After the first jerk, however, the car will not jerk again from Gear 1 to Gear 2. Car jerks when staying still with foot on break & accelerating. Slight miss in engine heard too. Why would a car jerk when you first start it up and when stopping? Answer. 1987 Sunbird GT non turbo, when cold engine, and accelerating, the car jerks back/forth, struggling at about 3000 -4000 rpm's. 2- 85000 miles. And, every time I start the car, the engine makes an awful noise; it seems to be an old vehicle. Here's Why Your Body Jerks Awake When You're Falling Asleep. After much googling, I've narrowed the problem down to something, or perhaps nothing. Solved It is a 1999 Toyota Corolla, 70k miles, I used 5w30 Valvoline Synthetic Oil. , Tinley Park, IL, US. Sekaziga, car jerking or hesitation when you are accelerating is usually a result of imperfect engine internal combustion. The RPM goes up and down by its self without my pushing on the gas. A bad throttle position sensor is the last thing that you will ever wish to have on your ride. If your motor does not immediately start up and run correctly, do not try to force it. all new 4 gauge cables. This article will help you to pinpoint and solve the jerking problem of your Honda Civic. Some vehicles may rock or move slightly forward or rearward while in park at start up after cold soak. It's been doing this intermittently for. Usually after it has one of these episodes, it will just randomly shut off after i get it going and up to 40-50 mph but then will start up fine while I am still rolling down the road. Average failure mileage is 122,650 miles. Then if i move in low speed, i will be jerking badly. It happened when I was filling my car at the same time as a tanker was filling up the stations holding tanks. and then the jerking happens at low rpms at all speeds but only after. Now the car is jerking really hard while driving. Whether cold or hot outside (I live in Florida) at the initial cranking up of the car and reversing, the car will reverse then when I switch it to Drive, remove my foot from the brakes to give it gas to move forward, the car will stay idle for about 5 seconds then jerk forward. Its normal when theres a mechanical connection between the cold engine and the tires. If the car jerks when the RPMs go up, this is a sign that the filter needs changing, typically at a service station. new v glide. We have already told you why your car might be jerking, but if you are also facing similar problem particularly when you accelerate, then OneHowTo. Car Shakes When Braking? 4 Common Causes And Fixes. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. With every sound, smell, and insistent light on the dashboard, we see days without a car to get to work and money flying out of our wallets like winged monkeys in little red vests and hats. had motor checked ok. It is the second time that the gears get stuck in a month. When this happens, your check engine light might come on to warn you of possible problems on your car. Q: My car jerk everytime I start to speed up. The car jerks a bit when it does this, as if it's idling too low and is trying to die, but it *never* does this when I'm in drive, or when I'm in reverse but have have been in the car for a while: it's only when I first start the car and am backing up. Also sometimes when sitting at a red light or stop sign the vehicle jerks a little. But what seems to be the big deal when your car is jerking while driving? Experts and professionals on automotive vehicles suggest that there is a big. With the passage of time, the sensor loses its efficiency and thus has to be replaced. Shortly after that, I noticed if I'm slowing to a stop after going at a speed in which my car is in 3rd gear, about 10 to 15 feet before I come to the stop the car makes a moderate jerk. A car that jerks when starting it, when accelerating or whilst you're driving is showing symptoms that something is wrong, though there can be many causes: it can be problems in the starting system, fuel, engine or the exhaust pipe. Just a brief follow-up for clarification. and when my car starts, and dies, it will crank but not fire up. There are so many different signs and symptoms that will show up and indicate your car needs an oil change and possibly a tune-up (see below for what a tune-up actually means). But if the weather is warmer, or if I start the car up after having driven it already, it will jerk a little bit, an "attention" light will light up on my dashboard and disappear after a minute or two of just warming up the car in park or driving it slowly. It's with the starting technique. I have changed my spark plugs and injectors have been cleaned. After the issue was resolved. If it hunts like that it could be a lot of things but most common would be. I just looked it up and read that its the clutch slipping and so i check the clutch as follows. 2 months ago my car stopped on the highway. This is definitely new for me. RPM go up and down. Dear guys, I am recently experiencing a problem with my car that it starts to jerk after 1 minute when starting the engine. Try to encounter as many red lights and stop signs as you can on your test drive. Spark plugs and ignition coil. when my ca18det is cold, it idles ok, but if i give it any gas it tries to die until after it warms up a bit, after the gauge moves a bit, i can give it gas and it only hesitates if i floor it, but if i try to drive it bucks and backfires until 3000 rpm, then after then, pulls fine, no hesitation. Diesel Car Jerks, Problem in Cold Start, Black Smoke: Get EGR and Diesel Injector Clean up. It is the second time that the gears get stuck in a month. Car jerks quite violently at acceration, starting at about 25 MPH until over 60 MPH and especially uphill, although never going downhill. Start with the easiest fix. No misfires. Hi,I've filled up the tank in my KB280 tdi,now experiencing a jerking problem after a couple of days,especially when accelerating faster,when letting go of the accelerator it switches of. Car literally jumps. If a car jerks all the time, regardless of temperature, a faulty throttle position sensor could be the culprit. Do New Spark Plugs Make A Difference If The Car Runs Fine Also as anyone seen the new bosch 4 super do they make much difference to the car… 1996 Jeep Grand Cherokee Exhaust Manifold Help I just recently bought this Jeep to fix up and basically be my toy and work truck. You can try blowing compressed air into the gap in the clutch and get some of the dust/dirt out of it. Just until about a week ago my car worked perfectly fine, but now it’s starting to act up and jerk when changing gears. Still in park, but a definite "not so smooth" engine start up compared to previous warm-weather starts. Have charged it and checked the water level in the batteries. :banghead: So now the car starts perfect every time but at about 25 to 30 mph in 3rd the car jerks real hard for a while and evens out and then picks up. ), and the car won't start. i checked the batteries and they are all the same voltage whether uncharged or fully charged. Cart "jerks hard" on start I've got a 97 CC that "jerks" into motion when the throttle is pressed. The reason for this type of white smoke is due to burning coolant that somehow got mixed up. There's an old adage when troubleshooting: start with the least expensive and simplest fix. When I accelerate between 15-25 mph, the car jerks violently. The transmission shifts fine through first and second but jerks hard at 15 mph and then shifts fine until i shut the car off and then restart it and drive away even if the car is warmed up. If your car has a push button start system, read this guide. 5 Signs Your Engine Is Losing Power. I will be picking up my car tomorrow and I will see if the problem has corrected itself. Shuddering from a start or going up a hill is a loose/worn drive belt. but as of now. When I hit the gas (whether it be a light tap or hit it pretty hard), my car kind of waits a second, jerks and then takes off (revs go kinda high when it's waiting). What is the most likely cause?Notes:1 - Car is 4 years old @ 84K mileage. Have to put the car in neutral when at a stop light or sign. But if the weather is warmer, or if I start the car up after having driven it already, it will jerk a little bit, an "attention" light will light up on my dashboard and disappear after a minute or two of just warming up the car in park or driving it slowly. Signals of trouble in fuel pump. I knew something didn't seem all together. Sometimes when I start my car, the car jerks forward even though its in park. I have replaced the solenoid, batteries, On Board Computer OBC, and taken out the motor and check brushes. Because otherwise, these things can give you a panic attack. have to wait like half hour before it can start again? this i have tested few times =. Start the car. I don't personally have any problem in reverse or in any gear higher than 1st. There's an old adage when troubleshooting: start with the least expensive and simplest fix. There is a jerking when I'm going very slowly. If you do not see any, run your hand over the entire tire surface front and back. and it happened to me on the freeway while going back home from work. It happened when I was filling my car at the same time as a tanker was filling up the stations holding tanks. After the first jerk, however, the car will not jerk again from Gear 1 to Gear 2. This started happening last month. I have noticed that when I am driving my car when the engine is cold, the car seems to jerk forward and back a lot if I am driving less than about 20-25mph. If the car is idling faster than the torque converter stall speed, it will jerk when you put it in Drive. According to the Samarins website, one of the most significant issues that causes a car to jerk is a faulty transmission. Reduced power notification light came on today along with the engine light. The most usual issue which causes the car to jerk when you start or accelerate it is loose spark plugs. 5 and then to 1. new rear end. This happens when the engine is cold and when started next time it works absolutely fine. Unfortunately, you won't see the source of the problem when all of a sudden the system fails. Coming back the problem resurfaced. Shortly after that, I noticed if I'm slowing to a stop after going at a speed in which my car is in 3rd gear, about 10 to 15 feet before I come to the stop the car makes a moderate jerk. For instance, if your stomach begins to hurt without warning, you'll probably start thinking of the last thing you ate in order to figure out why you're having the pain. If your car jerks when you accelerate, it can be a sign of moisture or probably something wrong in its motors. It sometimes lets out a big cloud of smoke right when I start it. It does this especially when I first start driving. A bad throttle position sensor is the last thing that you will ever wish to have on your ride. It happened when I was filling my car at the same time as a tanker was filling up the stations holding tanks. I have a 2004 Honda Accord EX with high mileage and I typically stay on top of repairs needed for the car. Unfortunately, you won't see the source of the problem when all of a sudden the system fails. Car hesitation. Car will accelerate on clicks 2 thru 5, if it doesn't, then that is your bad soleniod, it would only take you about a minute to figure it out. If you do not see any, run your hand over the entire tire surface front and back. Re: car hesitates/jerks while driving Sign In it feels like a delay in accelteration. A car that jerks when starting it, when accelerating or whilst you're driving is showing symptoms that something is wrong, though there can be many causes: it can be problems in the starting system, fuel, engine or the exhaust pipe. Dear All, Reg : Santro Zipplus LP. Honda Civic: Why Does My Car Jerk When Letting Off and Barely Pressing Gas Pedal? If you feel a jerk when letting off the gas, the problem can be easy to diagnose. It often runs fine without jerking if you stay easy on the accelerator, but as soon as you race it, the car starts jerking. If the car jerks when the RPMs go up, this is a sign that the filter needs changing, typically at a service station. Why does my car jerk when the engine is cold? Hi everyone, I hope this isn't too dumb of a question, but I am wondering if my car has something wrong with it or not. If you don't have enough fluid then top it up. There is also a hesitation after pressing on the gas pedal - not good. After about thirty seconds or so of driving, the tendency to jerk should disappear. Back when carburetors were king and fuel pumps were mechanical, power loss usually came down to vapor lock or a clogged fuel filter [source: Goms ]. But once I do stop and jerk, if I want to inch my way up, I don't get the jerk the. The J-Body Organization, j-body. What's weird is that you do hear the engine "catch" every now and againjust not consistently enough to get the engine to start easy. After 20 of driving when you do stop and press on the gas to go it stalls out. If so, you might have a power problem. Originally Posted by C₄H₁₀. new batteries in june. Also please check out the statistics and reliability analysis of Nissan Rogue based on all problems reported for the Rogue. The transmission shifts the car between gears. Once you know at which step things go wrong, you will have a better idea why your car won't start and what to do. Also please check out the statistics and reliability analysis of Nissan Rogue based on all problems reported for the Rogue. This type of car jerk is very common in a manual transmission for those drivers who are just starting to learn how to. Start car, place in 1st, pull handbrake, dump clutch with no gas and the car stalled right out. After when it's in D, it has no. It will crank and crank, but then takes forever to start. I feel like all these symptoms are related somehow. Sometimes it will jerk (or more likely to be chilling/shivering :P)seriously until sometimes engine will die when starting it in the morning. Dear guys, I am recently experiencing a problem with my car that it starts to jerk after 1 minute when starting the engine. new batteries in june. Accelerator Throttle body Air flow sensor Jerking/Hesitation Revs up and down My problem is that after I cleaned the throttle body and maf sensor, when I start the car it accelerates and deccelerates, and when I start driving the car jerks and hesitates, and the revolutions go up and down. Start-Up Problem: One of the most common symptom of bad ignition coils is start up problems, especially cold starts. Don't know much about car repair, so any help is appreciated. Replaced all the butterfly valves and screws with new ones with locktite. If so, you might have a power problem. A month ago I got the transmission fluid and filter changed at a local AAMCO. Sometimes it feels that car might be stalling. My car is acting the same exact way, "ran fine until the next morning, on starting the car up now it misses and lacks power, if I turn it off and on again it runs fine again, until next morning it dose it again, is it just fuel filter do you think? Thanks" My car will occasionally crank and crank before starting. If your motor doesn't run when you apply throttle and just stutters, jerks, jitters, wiggles, or vibrates, usually while making a whistle, screech, or beep sound, STOP. This is what it does, when I press the pedal down full it start jerking and the battery light starts blinking and it will not go. Not sure if related. The fuel system fails to hold pressure overnight and takes a longer than normal time to pressurize the system at start-up which is why it runs rough. Every other. and it took me like good 5 mins to start it back up. A wet evening (fog, snow, rain, etc. While driving my car suddenly jerks starts running rough, then stalls when coming to a stop. If a car jerks all the time, regardless of temperature, a faulty throttle position sensor could be the culprit. If the car is idling faster than the torque converter stall speed, it will jerk when you put it in Drive. Idles rough at 500 rpm most of the time. For about the first 20-30 seconds of operation, the idle speed will be high enough to make it jerk when getting into gear, though it is worse when first starting the car and then shifting into reverse. hi all, i have an issue when i am idling at traffic lights. It often runs fine without jerking if you stay easy on the accelerator, but as soon as you race it, the car starts jerking. So when I am driving along and the vehicle is in top gear and I begin to go up a hill and the car needs to downshift to maintain the speed it begins to jerk around like it is having trouble downshifting.