By (Manifold Air Pressure Sensor) any chance you BEST Place to SELL 1994 LS400 LEXUS with 166,000+/- miles. It can perform light off-roading tasks while still being able to tow a good amount of weight. If this sensor goes bad, the engine control unit will be unable to keep the right balance in the mixture. Itd be best to bring your car to a shop you trust for a diagnosis. We changed spark plug, fuel filter, transmission fluid, engine oil, engine filter, and clean throttle body, change air flow sensor. I ran Gumout through the gas tank, changed plugs, wires as well installed a brand new EGR. Copyright 2023 Leaf Group Ltd. / Leaf Group Media. After 45 mph it stops and I have no other issues. Only one comment per entrant is allowed and more than one comment will not increase your odds of winning.5. totally fine. carbon out of everything especially the ports The car has started jerking around 40-50 mph my wife said the a few weeks ago. Take the fuel line off at the carburetor, put it in a glass bottle and see how much fuel you're getting and how strong a flow. Also, a loose motor mount, or rear diff'l mount, might result in a tugging feel due to the resulting "in and out" action of the lockup clutch, at those speeds. year amongst other things. But if this sensor is bad, then the wrong amount of fuel will get injected and cause engine hesitation. It doesn't happen all the time and doesn't matter what kind of incline I'm on. Hesitation. My mustang hesitates 40mph and gives me hill starts assistant not available ! The engine then stalled. The reason why car hesitates when accelerating uphill is simple! These are the f-body part #'s. About $65 for both solenoid and valve from Dal. For a better experience, please enable JavaScript in your browser before proceeding. This giveaway is open worldwide.7. You are using an out of date browser. The problem happens only around 20-24 MPH and around 40 MPH give or take a few MPH. which of the 4 wires to connect? I have done this before and it worked out beautifully. 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. At that moment, a bad transmission can cause the car to jerk, and that could be accompanied by a loud "slamming" noise. My car is hesitating / jerking at speed intervals of 20 mph, 30 mph, 35 mph and 40 mph. My computer for editing / uploading: https://amzn.to/2uUZ3lo7. Same symptoms as you describe. 4k Camera: https://amzn.to/2HkjavH4. If I am not driving at that speed and accelerating in the same rpm range . I decreased my speed to around 40 mph and the sputtering stopped. mechanics. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery, http://forum.ih8mud.com/forums/pa-keystone-cruisers.77/. And be aware that exposing a perfectly good, even brand new, O2 sensor to our oxygen rich atmosphere while the sensor element remains heated will/might "spoil" the sensor, cause a CEL, for the first 100-200 miles. There are a lot of things that can cause this. Sure hope not but seen it happen on other cars. So now comes the task of draining and cleaning the gas tank. Camera Microphone: https://amzn.to/2Evn1675. Changed my spark plugs new valve cover gaskets oil on dip stick looks clear though had fuel in oil but tried igniting the oil on dip stick , nothing . Sometimes this can be a quick, cheap, easy fix for initial stumbling and hesitation when you step on the gas. It makes a shooting sound (pow) many tyms. Took the car to the dealer to have it . The car does hesitate when at 35-40 mph and above and it response very poor when press accelerator slowly and steadily. Fiberglass tub. I have a 2005 Ford Focus Wagon and it does the same thing! Id visit a mechanic to get it checked out as soon as possible. I tried the MAF/MAP route but had no luck. but the car jerks while eccelerating between ab i have brakes when car is off but when i turn the car on brakes peddle goes to the floor what hell is wrong with it. Thumbnail software: http://amzn.to/2k7tz6CCheck out the tools I use and highly recommend https://goo.gl/rwYt2yScotty Shirts and Merch https://goo.gl/pTAecaSubscribe and hit the notification bell! If you can still snap the throttle wide open & the tach responds appropriately, it's not the cats. dentist tool you can get at autozone or Billy from United States 7 years ago BI Comment Same issue here 17 reports No problems starting and traveling at slower speeds but once again 20 mins into the drive traveling between 40-45 mph the sputtering began. 2014 Ford Escape with 88k miles. It may not display this or other websites correctly. Sounds like it does not like the autozone tps sensor. Had one of my U joints replaced. (https://www.yourmechanic.com/services/coolant-is-leaking-inspection) I would recommend having a cooling system pressure test performed on your vehicle by a qualified technician. First, a word about that latter, last, link. If the oxygen sensor is not working properly, then the proper air and fuel mixture cannot be achieved. Repair or replace any hoses which are causing the leak. Started March 4, 2021, By Doesnt using an abbreviation only to then state what the abbreviation stands for really defeat the purpose of aforementioned abbreviation? You are using an out of date browser. 11. I bought it Do Not Sell or Share My Personal Information. The A/C works intermittently also. Car Hesitates When Accelerating From Stop: 11 Common Reasons In essence, delay or hesitation of the engine during acceleration happens when the engine does not get enough power, and it needs more power to accelerate from a dead stop than when maintaining the speed of a moving vehicle. My car has an automatic transmission. This generally will happen at the same speed with consistency as the transmission continues to corrode. Vac leaks can cause or contribute to the symptoms you are having. If you have not cleaned your fuel injectors for a long time, then theyre probably corroded with carbon deposits or other debris. I will be trying some cleaner in the fuel tank to see if it's the injectors, along with some premium gas. if they carry the part. The fuel filter 's job is to filter the fuel going to the fuel injectors and then enter the engine. (Heres Why You Might), Top 10 Reasons Your Car Hesitates When Accelerating or Driving, 9) Faulty Exhaust Gas Recirculation Valve. November 27, 2011 in 90 - 00 Lexus LS400, I am sharing my experience with this chronic problem of misfire at a certain speed when cruising that I see repeatedly in this forum, First I admit that this forum helped me a lot to find the cause of my problem but unfortunately after spending lot of money in changing many parts, First thing I want to say is that many issues can lead to the same symptoms of hesitation or misfire between 40 to 60 mph, Hesitation at this speed does not mean that the engine is only hesitating at this speed and THIS IS THE TRICK, The misfire is clearly felt at this speed because the torque converter clutch is engaged that means the engine and transmission are considered as 1 unit so any slight misfire in the engine will be felt in the transmission and this is happening only when cruising. My car is a "beater" but now the problem has become a challenge. We may earn a small commission from affiliate links and paid advertisements. What could be causing this? Is there any downside to having two gas filters in a fuel system? I have a 2015 fusion 1.5 turbocharged after getting gas, once car is killed and I go to crank it again the car goes to shuddering and losing power. My next step will probably be to install a new fuel They're only slightly more than the OEM types, but you can dissassmble and clean them out on the fly in less than four minutes. Please see our. Engine starts right up and idles smoothly. owners, Over 25,000 topics, from beginner tips to technical Step taken so far. :banghead: kilroypr. In your shoes, I would delay doing the fluid replacement stuff until after doing the basics and then continue hunting the sputter/bucking problem. just had this problem with a 2002 saturn sl2 turns out it was a fuse under hood labeled TRS It is real worse on highway when cars get hot. The Fora platform includes forum software by XenForo. When I take the car out of gear there is no shutter. If you have an account, sign in now to post with your account. Run sea foam through gas tank and necessary and make sure pcv valve is good . 1,520 Great Deals out of 20,946 listings starting at, Car jerks when accelerating between 40 & 50 mph. Also, you should buy a rebuildable / serviceable fuel filter. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. JavaScript is disabled. Jump to Latest Follow Follow Hi all. I noticed that during acceleration onto the freeway or on inclines, the vehicle would start to hestitate or stutter as I referred to it. YourMechanic All rights reserved. Drives fine otherwise. Thank you for your fast reply. It's often difficult to discern the difference between an ignition misfire and a torque converter malfunction. I took several days before reseting the CEL "took". F133S with LC-10 S-Series Large Body FUMOTO Valve with Short Nipple and LC-10 Lever Clip for 12mm-1.25. Clogged fuel filter. The radiator fan operates on a fused circuit with high amperage relays to drive them. What causes a car to hesitate when you accelerate? The Fix: Replace the air filter. wrong gear for the right speed or vice versa . So new spark plugs, battery, oil changes etc. CODE P0300,P0302,P0303. The car will jerk real bad when driving at a steady speed and also when slightly accelerating. Any check engine lights? It did seem to help with the cars overall performance. my car hasitate at 3000 rpm rpm fluctuate but at 2000 rpm it looks fine. a sticky valve . I have spoken to factor. Im not sure. I've been an auto mechanic for the past 50 years and I'm here to share my knowledge with you.Here's our weekly video schedule:Monday: Tool giveawayTuesday: Auto repair videoWednesday: Viewers car mod show offThursday: Viewer Car Question Video AND Live Car Q\u0026AFriday: Auto repair videoSaturday: Second Live Car Q\u0026ASunday: Viewers car show offSecond Daily Upload Every Afternoon of Live Car Q\u0026A videos as well!Scotty Kilmer is a participant in the Amazon Influencer Program.#savagescotty It looks like you're new here. Once Im going faster or slower it stops. It also makes noise when the cars sitting at a light or stop sign. Car hesitation whi Shop the Scotty. In my case, that was a defective wire (cracked or burned..) A cracked or broken sparkplug would make run the engine very rough right away at any gear. This should be checked out by a professional mechanic immediately to avoid being stranded or causing further damage. Hello there, a variety of faults that can cause your 2001 Honda Civic to overheat (https://www.yourmechanic.com/article/can-a-car-battery-overheat-in-hot-weather). Faulty Transmission Control Module All 4 are the same sensor its just the cable lengths which are different. The battery has a battery temperature sensor that can fail if the Check Engine Light comes on, the battery voltage is low, or the RPM curve surges. For a better experience, please enable JavaScript in your browser before proceeding. The transmission sometimes can prevent the car from maintaining proper speed. The children are from the small town of Bad Arolsen in the central German state of Hesse, and are reportedly in the 10th grade, meaning they are aged 16 and 17. An engine that is hesitating to accelerate is most likely dealing with a fuel/air mixture that is too lean. Car Jerks When Accelerating - Reasons & Solutions Red, Gozzard Fiberglass tub. Hesitation at around 45 to 50 MPH when you go to accelerate Hello, I started getting a hesitation/bucking in my 2001 F150 SCREW 5.4L 96,000 miles. replace if needed . It is a 350 it did over heat but head gasket good no water in oil or over heating . andbeyond, Nov 16, 2017 #20. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Mailing Address:9169 W State Street, Suite 2867Boise, ID 83714. Used to happen to me after wheeling when I would shake all the rust particles from the bottom of the tank. If any of the components in your fuel system stop working correctly, like your fuel injectors, fuel pump, or fuel pressure regulator, then your engine wont get the proper amount of fuel it needs for combustion. Any misfire codes? Could be bad gas or an unrelated issue. The car hesitate when i step on the gas. This made the hesitation MUCH better in low gears and speed but it still hesitated around 40-50MPH almost feels like a fluttering or dead-spot in the pedal. You might need to replace your MAF sensor which is your mass airflow sensor and definitely check your fuel rail and fuel injectors. costs, Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, The statements expressed above are only for informational purposes and should be independently verified. For a better experience, please enable JavaScript in your browser before proceeding. I'm thinking it When I apply throttle it hesitates and stumbles. Is there some documentation on changing the spark plugs? Several years ago, having a Olds Intrigue 3.8 L, that smillar jerking effect happened and around this speed, car on top gear. She kept it well maintained from what I was told. Timing could be out. Not if its unfamiliar to the audience or needs to be disambiguated. thats how I fixed mine! Lexus # 89465-50140 / Denso OEM # 234-4167 / Denso Universal # 234-4209 / Bosch OEM # 15272 / Bosch Universal # 15733, What year is your LS400 are you sure this isnt about that engine ECU problem where at 45 mph it feels like your engine hits something, like a super rough shift boom? When this fails, this can cause an imbalanced air/fuel load to be supplied to the motor which results in an over fueling or under fueling situation depending on the conditions. It starts as the Rav slows through 40 MPH; sometimes starting around 42-45 MPH and will continue through about 35 MPH. 2. My car was jerking as well. When is the last time the spark plugs have been replaced? about 6 months ago from a friend of I can barely discern a vibration in the vehicle, but if I have my foot just over the accelerator pedal, I can feel it vibrate in unison with the noise. The fan motor itself is also a possible and common failure point. wish to see more in the coming days. So Sunday we packed up and headed back home, and about 30 mins into the drive traveling about 45 mph the engine started sputtering. To help you pinpoint the cause of this problem, below are 10 of the most common causes of engine hesitation while driving. Saturn Outlook we are looking at. That will be my next step. Cleaned that off and the problem went completely away. 1978 - 1996 Big Bronco - 30-40 mph hesitation - my 93 bronc 351 e4od runs and drives great but a few months ago i noticed that between 30 to 40 mph it sort of hesitates like it doesn't know whether to shift or not does anyone know what this might be? I have a '96 saturn sl1. When the engine reaches operating temperature both Hello, thanks for writing in. https://goo.gl/CFismNScotty on Social:Facebook https://www.facebook.com/scottymechanic/Instagram https://www.instagram.com/scotty_the_mechanic/Twitter https://twitter.com/Scottymechanic?lang=enThis is the people's automotive channel! Could this be caused from a clogged cat? Actually I called it misfire based on the link below which explains that misfire can be caused by one 3 things: 2- the air/fuel mixture is too far out of balance to ignite, http://www.autotap.com/techlibrary/diagnosing_misfires.asp, In my case a random misfire (hesitation) was happening every 4 to 5 seconds and was caused by a bad air/fuel mixture (lean misfire) due to the bad oxygen sensor, This sensor was causing a rough idle too, after changing it, no more hesitation when cruising and idle became much smoother, the link below helped me to test the sensor, http://www.lexls.com/tutorials/EFI/mainoxygensensor.html. Never any sponsored content, just the truth about everything! It is really noticable when pulling out and gradually working up to around 40MPH. The winner will be chosen at random.10. fuel pump. you posted. They are as follows: Bank 1 Sensor 1 - Driver's side (left front) on exhaust header. I have a 2014 vw tiguan and it seems to be hesitating only when its hot outside (85+ degrees) it will trip a check engine lean code but if I clear it and drive during cooler temperatures it drives perfect. It's FREE! It is basically stock and has been desmogged. They tried to sell me some other brands but I had them put in AC Delcos. JavaScript is disabled. You can post now and register later. guides, Check cars for recalls, common issues & maintenance Fuel mileage is bad now as well. If that doesnt do the trick, you may need to have them professionally cleaned or simply replaced with new fuel injectors. 2) O2 sensors will effect your fuel mix and could cause too rich or lean a mix that will create problems but doubtful it would be isolated to a narrow band of speed like you saw. No noticeable vacuum line cracks/breaks. Today, I will be better than I was Yesterday, but not as good as Tomorrow! Check Engine Light with Code P0117. When the transmission shifts, engine noise usually will quiet down, and the RPMs will drop. But don't worry because this symptom also has a solution like other car problems. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The car may be pulling timing for some reason when its hot. If your ECM is adjusting the engine to run too rich this could happen. a colleague today regarding the potential 2007 To enter, simply leave one non-offensive comment in the video below.4. Take off exhaust manifold and clean the If you purchased it locally and do not have the receipt, just take it back and they may have the sale on record. Much appreciated. would replace it for $3500 it was simply 2 $1.39 fuses. The hissing sound you are hearing is most likely a source of a leak in your cooling system. When the engine is first started cold it is running open loop and the O2 sensors aren't used at all. Are you asking if oil on plugs could cause a bad fuel pump? http://www.g6performance.com/forum/showthread.php?t=22038. My advise is to go with the following sequence: 1- check spark plugs and wires (must be original), 2- Oxygen sensors (and this was my case one of the 2 main oxygen sensors was dead and caused the random misfire), These are the most common causes of misfire. How many miles? It comes on as I get below 40. I have the same thing on mine but hasnt changed with all new coils and plugs. The ignition wires may be bad. I don't think it is a transmission issue as the transmission will shift with no affect on the shudder. A good fuel injector cleaner is often a good, cheap fix that will restore proper fuel flow from the injectors. If any of the vacuum hoses around your engine become damaged or worn out, you could experience air leakage from them. Bill Gate's would stoop to driving an LS? It would be best if you replace or clean the dirty air filter to stop this problem. Has the problem gotten worse since the mechanic changed those parts? Common issues include: This happen with a Pontiac 6000 , 2.8 L. hey guys, same issue here, I have a manual tranny 06 gtp. . "It is better to be careful a hundred times than to get killed once" - Mark Twain, Where it smokes.. is the current too high! The following problem occurred afterwards. (Engine Oil Viscosity Explained), How to Debadge Your Car (In 3 Easy Steps), Should I Cover My License Plate Online? 1970 FJ40 Grey, 4 inch lift, Winch, Aussie rear, ARB front. Alpine s10" dual 2 ohm voice coil Subs in a ported box JBL GTO-14001 1500w amplifier, tint, stock everything else! V6 Accord's are particularly prone to bad ignition coils. don't seem to think the crank/cam sensors could be the culprit. help please! It ran I tried replacing the MAF and MAP sensors first. To help you pinpoint the cause of this problem, below are 10 of the most common causes of engine hesitation while driving. This was traced back to a light film of corrosion on a coil wire. said it could be a . Tugging can be the result of ignition, EFI, fuel pump pressure, and even the secondary "Trac" engine de-throttling servo. plugs are OK. I took my Toyota highlander 2003 for servicing, plug changed, injector nozzles washed, & MAF cleaning. There is a shudder under acceleration that starts at 30 mph and will continue to 40 mph were it goes away. Car engine hesitation is a noticeable problem that can occur as youre driving. problem started the first day of new car purchase. wherever) then clean egr or replace if Thanks to this article I will also try cleaning the MAF but It still does it with the air cleaner disconnected but it is worth a try. My stabilize traction control light came on but went off now check engine light is on and my car hesitates when I step on the gas and go up a hill I got a 2011 Chevy cruze. Help? to Amazon, eBay and other sites may include affiliate code. I have a Denso 234-4167 Oxygen Sensor that I ending up not needing. Replacing the TPS is the only solution. What could be the problem? Im not sure. 3) Throttle Position sensor can play havoc with the ECU if there is a dead spot on it such the ECU gets an erroneous reading at certain pedal positions. ), What Oil Should I Use? Its new in box and I'm happy to pass it on for less than I paid for it (I paid $65.00). Not sure whether the procedures are applicable across all 1st gen models, though. It did great going down there and throughout the week that we stayed. Bad spark plugs, sensor failure, and bent valves can all cause engine loss of power, thus . Sometimes simply cleaning the MAF may do the trick, too. If I should need to change out the metal fuel lines, does anyone know the correct size for rubber tubing to connect from the gas tank forward? Now, I do know that This condition can cause dangerous situations in heavy traffic when drivers behind expect continuous forward movement. Are there any codes stored? It seems more Torque converter lock than loading. Common Sense3. Car advice. Can you describe the hesitation in a bit more detail? Hesitation on acceleration. Your vehicle has two cooling fans, one is for the AC, the other is for the radiator. They definitely needed replaced, but that still didn't fix the bucking issues. The hesitation around 40 and 50 would be in keeping with that theory. We took the car to the dealer where we purchased it and they were unable to find anything because there were no codes present. point. When DIY car repair with Scotty Kilmer, an auto mechanic for the last 50 years.Thanks for watching! When the issue persist, it grow worse that, the RPM will get close to zero. I have a 1996 Saturn SC2. WHEN CODES COME BACK IT STARTS TO HESISTATE AGAIN. Hesitation Problem with 2007 LE I4. Best bet would be to take it to a local shop to see what they would charge you to replace the plugs. looked at that yet? A faulty ignition coil can cause the engine to misfire and hesitate under load. How to fix engine hesitation during acceleration. Asked by Guru94BPVD Sep 12, 2020 at 04:13 PM about the 2017 Hyundai Elantra SE Value Edition FWD. Yes it is an automatic. I'm having the same problem and being discussed in another thread. Now it is starting to stall when stopped. As the car approaches 40 mph, the RPMs will increase in the engine. Scotty Kilmer, gives you a chance to win a car product, by entering in this weekly giveaway. If it's been sittting, you may have condensation and/or rust in the tank making it's way through the system. Or show off your own car mod on Wednesdays. Very common problem on the LS400 specially 1995/1996. The car seems to hesitate in 4th gear right around 43 mph. went to dealer. At that moment, a bad transmission can cause the car to jerk, and that could be accompanied by a loud "slamming" noise. Bluetooth Scan Tool: http://amzn.to/2nfvmaD2. My front end shakes when I accelerate at low and high speeds 2003 Pontiac Grand Prixh, A Buyers Guide to the 2012 Mercedes-Benz ML350 BlueTec, A Buyers Guide to the 2011 Mercedes-Benz ML450 Hybrid, How to Replace a Car Battery Temperature Sensor. To quote a phrase, "If you eliminate the impossible, whatever remains, however improbable, must be the truth! After. What is your rpm at 40 mph on a level road? As the car approaches 40 mph, the RPMs will increase in the engine. Bella Online: What Does a Car Transmission Do? but especially when "something" is wrong. Interestingly, such an act can help improve the lifespan of the engine. Have a mechanic trained in vehicle electronics inspect the radiator fan (https://www.yourmechanic.com/services/cooling-radiator-fan-motor-replacement) for You have two starter relays. Can you help diagnose? 4. It will definitely be cheaper to have a proper diagnosis than to fire the parts cannon at the problem. You must log in or register to reply here. The Fix: Replace spark plugs. All lights, chimes etc stay on but no acceleration. Car likes cooler weather and my problem Car has about 47K miles and has had all maintenance performed. I'm still thinking it could be the fuel pump or the crank and/or cam sensor. If it were my car I might hook up a scanner and check short term and long term fuel trims. $29.93. Put the clear filter on and we are up and running past 40-45mph without the sputtering, hesitation and stalling. ESBJr, have you ever found out what the problem Any codes? Wrench Set: http://amzn.to/2kmBaOU5. Well a few more miles down the road it started again. either. Im not sure I understand the question. Prior to EFI there was no feedback loop on fuel trim (remember those things called carburetors?). Only happens in the top gear around 40-45 mph. Any thoughts? Isabella83 My car hesitate when you start and start driving it does not move then after a jurk it moves. Hey guys, went out and purchased a clear filter like Rudi posted up. Car is Any ideas or things to look at would be appreciated. the same problem and this is actually a deciding The '90 and one of the '92's are now off the list. I feel it if I accelerate quick or cruise, and feel it more when I coast. Id take it back and have them double check their work. CarGurus has 44 nationwide S-Series listings starting at $3,688. Have a 1998 manual trans. If it's less than 2k rpm, then you have the old programming, and should get the upgrade flash to the transmission (by a different dealership if need be). The engine control unit depends on the MAP sensor to determine the engine load. A pop and hesitation is likely a backfire. They are so much better. around 40 mph. 1) Throttle body is more of a rough idle phenomenon, not very noticeable at higher speeds as the caked up residue is insignificant at wide open throttle positions. I tested mass air flow harness and I get 6.1 volts at PCM wire. He has also studied martial arts since 1990 and has worked as a licensed security specialist. Can you describe the hesitation problem in as much detail as you can? Jeff1104 This is because something is wrong within the engine bay - what could that be? pump. JavaScript is disabled. But this too would be noticeable at many speeds. hesitate to tell me that it is very likely the MAF This giveaway complies with all applicable federal, state, and local laws, rules, and regulations, including U.S. sanctions.15. pperro57@gmail.com. This may cause a hesitation, loss of power or jerking reaction when this sensor is malfunctioning. It has started bucking under load, feels like it is losing a cylinder when accelerating and I get a sweet smell like kerosene. At that moment, a bad transmission can cause the car to jerk, and that could be accompanied by a loud "slamming" noise. Upload or insert images from URL. I dont know, youre probably going to have to have a technician take a look at it and see if there are any other problems. Flat, hill, doesn't matter. Your link has been automatically embedded. 2CarPros: Car Acceleration Questions and Answers. Only to find out that it was my EGR Continuing attempts to accelerate can result in severe engine damage. Nissan sentra 2012 My car hesitate on red light. Ethanol vs Non-Ethanol Gas (Which is Better? Made with in Silicon Valley. Right around 40 in what I believe were the car is shifting into 4th gear or overdrive the car starts to jerk (RPM's do not fluctuate/MPH do) If I give it some gas at this point the jerking stops but may return at higher speeds. Normally under these circumstances Id look into normal causes such as Coils, Wires, O2 sensors, Injectors, Fuel pump/filter, etc. 1D10CRACY 60.2K subscribers Subscribe 3.1K 583K views 5 years ago My 1999 Lincoln Town Car developed.

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