You don't even mention coils which are a known weak link of these cars. 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. 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. It's like the truck shouldn't be shifting that soon. owners, Over 25,000 topics, from beginner tips to technical Why would my 2004 Dodge ram 5.7 keep throwing a map sensor code and I changed out the senser and the computer and now that I have a new computer it hesitates on takeoff. When was the last time the spark plugs were changed? Berlin car crash: 14 children injured and their teacher killed as trip Hard to crank, No check engine light no codes stored. An engine that hesitates when accelerating is either sucking too much air, not getting enough fuel, or misfiring. There is a shudder under acceleration that starts at 30 mph and will continue to 40 mph were it goes away. Best bet would be to take it to a local shop to see what they would charge you to replace the plugs. When does it happen? Fix the admin first, then fixing the website becomes so much easier. Is there an easy way to check for vacuum leaks that you know of? Fuel mileage is bad now as well. valve actuates . My car hesitates or has trouble when I hit 40 mph..accelerate..cars This obviously means we are imagining it, NOT. I'm thinking it Started March 4, 2021, By Have cylinder compression checked . Actually you can probably get your purchase price back very easily w/o reselling. ALREADY CLEANED INJECTORS AND CHANGED EGR GASKET. The The 2011 Mercedes-Benz ML450 Hybrid is Mercedes' first hybrid SUV. Drives fine otherwise. Just wanted to make you aware of a potential problem, and to include it as part of your search. 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? Thank Heavens for my wonderful mechanic who found and fixed this! We changed spark plug, fuel filter, transmission fluid, engine oil, engine filter, and clean throttle body, change air flow sensor. The winner will be required to respond to Scottys comment within 24 hours or their win will become void and a new winner will be chosen at random. mechanics. I second the live data suggestion. When this is not working properly, you may also notice a strong smell of fuel. Not just one plug like three on pass side maybe one on other side .. now not smoking so. Content will be removed if CarGurus becomes aware that it violates our policies. Still there. Youll probably have to take it to a shop to get that diagnosed. a sticky valve . Step taken so far. So Sunday we packed up and headed back home, and about 30 mins into the drive traveling about 45 mph the engine started sputtering. This may cause a hesitation, loss of power or jerking reaction when this sensor is malfunctioning. 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. I' have also changed the EGR but that did not help Could be an electrical issue elsewhere in the system, like a short in one of the wires leading to the MAP sensor or a bad ground. Car jerks when accelerating between 40 & 50 mph - CarGurus Weather seems to have an effect though. 13 Reasons And Solutions For Car Jerks When Accelerating - CAR FROM JAPAN You are using an out of date browser. Good work ehabmarco. Any codes? Problem is more noticeable on hills/slops. Will start on changing out the fuel filters and checking out the fuel pump with disassemble. This will cause hesitation as you accelerate. My Toyota Corolla Sport 2003 model started hesitating while at speed, I consulted mechanic and they change fuel pump, filter MAF, check the throttle position sensor, its like its not working, I have to start twice unlike before.. what should I do? Saturn SL with 169450 miles.. about 50 miles ago she started stuttering from front to back while in 4th gear going about 35 mph also in 5th gear going 70mph. Why your car may be jerking, bucking, hesitating, or shaking in town or at highway speeds! Its new in box and I'm happy to pass it on for less than I paid for it (I paid $65.00). Idles a little rough at times as well. Check plugs / wires , it may have I think one of my spark plugs/wires/coils is bad but I'm not going to spend hundreds finding out which one until I get a code. This helps sustain the proper air and fuel mixture while the vehicle is in use. It did great going down there and throughout the week that we stayed. Sounds like something got messed up at the last service, if those problems have only occurred since you were in the shop. Vacuum leak will affect idle before anything else and certainly not at 40-45 mph and nowhere else. This obviously means we are imagining it, NOT. My 2017 Hyundai Elantra is hesitating shifting right. Steve. I noticed that. My car hesitates some times around 35 to 40 mph and is more - Fixya It was the plug and wiring for the plug. Hesitation/Stuttering While Driving Between 40-50 MPH vicjrblue Member Posts: 1 January 2016 edited January 2016 I purchased my Torrent October 2014 and it had approx. Are you currently in the car market and getting discouraged by high prices? I have changed the spark plugs. Sorry, I find it a bit hard to accept that a defective MAIN O2 sensor in an engine with TWO sensors, would result in a lean misfire. Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Either the engine is cool or hot. Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter. As the car approaches 40 mph, the RPMs will increase in the engine. Replaced the rear differential's front mounting cushion to clear up the problem. looked at that yet? a colleague today regarding the potential 2007 The vehicle has a stumble like a misfire(I think anyways) when driving. my car hasitate at 3000 rpm rpm fluctuate but at 2000 rpm it looks fine. When outside air goes into the engine as part of the combustion process, the mass air flow (MAF) sensor measures how much of this air is going in. Many times, while driving the Drive (D) indicator & Reverse (R) indicator appear on the dashboard at thesame time, after sometimes it returns normal. wherever) then clean egr or replace if 1 Answer Engine V6 is hesitating when accelerating over 40 mph Engine hesitates and almost misses when accelerating over 40 mph. wish to see more in the coming days. But if this sensor is bad, then the wrong amount of fuel will get injected and cause engine hesitation. 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 . don't seem to think the crank/cam sensors could be the culprit. I also smell a burning smell coming from under the hood when driving and I dont know if its oil or fuel etc. for an ignition miss. moving you to the technical section, should get more views there. Do I need to get a specific tool, or take it somewhere to get tested? Im not sure. I tried to nurse it home as much as I could but having the kids with me and traveling on the highway I felt the best thing to do for our safety was to just stop. 03-30-2004, 11:11 AM. If you are still having trouble, From what you've described, it sounds like you have a head gasket leaking into the engine cylinder and then out of the exhaust. Very rarely it jerks so bad . Took the car to the dealer to have it . 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. Check Engine Light with Code P0117. you posted. Starting with cleaning the egr valve. 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? Zeus01 drive train shudder between 30 and 40 mph | Traverse Forum Mechanics computer says one of my engine coils needed to change and so I changed all of them. Car juddering, jerking or stuttering - what to do | RAC Drive Bella Online: What Does a Car Transmission Do? Your car hesitating when you accelerate is an issue that can be caused by transmission problems. There are a range of reasons why your car is juddering when you accelerate. The engine then stalled. For a better experience, please enable JavaScript in your browser before proceeding. Have a 1998 manual trans. Misfires can be related to wrong plugs being used. So, when next you notice the car hesitates and jerks when accelerating, it may be due to a dirty air filter. V6 Accord's are particularly prone to bad ignition coils. I tried the MAF/MAP route but had no luck. Prior to EFI there was no feedback loop on fuel trim (remember those things called carburetors?). Tugging can be the result of ignition, EFI, fuel pump pressure, and even the secondary "Trac" engine de-throttling servo. Good luck, I'll keep You could check basic things like spark plugs and wires, injector functionality, and engine air filter cleanliness. cant maintain a speed over 50 . Im hoping not needing internal work .. wondering if oil on plugs could be cause faulty manual fuel pump 0 2 sensor ,dont hear any vacuum leaks.. just seeing if one those could be the problem before start tearing down to see if o ring or piston rings are causing oil to fouling my plugs .just with not smoking maybe just fuel problem not enough or coil not getting hot enough ? While accelerating vehicle started to shake between 30-40 mph. I have a 1978 FJ40 which I've owned since 2007. If it were my car I might hook up a scanner and check short term and long term fuel trims. DIY car repair with Scotty Kilmer, an auto mechanic for the last 50 years.Thanks for watching! Why, if you think it through, should it be otherwise. and seems to be lacking proper fuel pressure and Several years ago, having a Olds Intrigue 3.8 L, that smillar jerking effect happened and around this speed, car on top gear. These are the f-body part #'s. About $65 for both solenoid and valve from Dal. Video editing software: http://amzn.to/2jv5Fhf8. How many miles? Youll probably need to take it somewhere to have the issue diagnosed. necessary and make sure pcv valve is good Cheap Scan Tool: https://amzn.to/2D8Tvae3. I had it flashing CEL for 10 seconds but it never stored a code (trust me, I have the stuff to find out). Im not sure I understand the question. 94,000. Car hesitates when accelerating. x2 on the fuel system. When you go to step on the gas pedal to accelerate, you will suddenly feel like the power has been lost in the engine for a couple of seconds. The hesitation appears around 1700-1800 rpm and last until about 2,200 rpm. She kept it well maintained from what I was told. By the way this was after 3 mechanics looked at it and said it was the transmission and they As you go down the road it has a slight jerking action. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. We took the car to the dealer where we purchased it and they were unable to find anything because there were no codes present. When a car starts jerking as you accelerate it, there is undoubted that it's usually a sign of an impending issue. I tried replacing the MAF and MAP sensors first. If I tried to give it gas the sputtering became more noticeable and it seemed to lose power, although it never stalled. Professional Socket Set: http://amzn.to/2Bzmccg 4. You'll get info from other sensors, as well, like the MAP. A good fuel injector cleaner is often a good, cheap fix that will restore proper fuel flow from the injectors. I have changed the TPS, coil, coil igniter/module, plugs, cap, wires, rotor. However, sometimes car jerks when accelerating is a common problem faced by several car owners. Camera Microphone: https://amzn.to/2Evn1675. I'll see how the car runs as the weather gets warmer here in Chicago. . Nothing else has been done since I've had it. Shaking subsides at around 45 mph. Thanks for the thoughts and suggestions. Strange Vibration/Rumble at 40 MPH | Toyota RAV4 Forums I basically have to push pedal 3/4 way down so that it downshifts and accelerates.. It will definitely be cheaper to have a proper diagnosis than to fire the parts cannon at the problem. 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. As the car approaches 40 mph, the RPMs will increase in the engine. First, a word about that latter, last, link. EPB, BMS for Specific Vehicles, Software Lifelong Free Update, NOT Support All Cars $199.00 . 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. It has been a work in progress, and around April I finally got it running after rebuilding the carb. Fuel filter won't wait until you hit 40mph for it to act up, fuel pump might, are you SURE you routed the vacuum hoses properly? Hestitation while acceleration at highway speed what is wrong? I was then told my throttle body needed to change and so I bought a new one. If still having issue after that let me know. You cannot paste images directly. Hesitation at around 45 to 50 MPH when you go to accelerate If you have an account, sign in now to post with your account. Can you help diagnose? replace if needed . When the issue persist, it grow worse that, the RPM will get close to zero. fuel pump. Lol old_mopar_guy April 29, 2019, 10:52pm #9 The only thing your 09 Nissan has in common with a 99 Mercury is that they both have 4 wheels. If it is around 2k rpm, you have the newest programming. CLEARED CODES AND CAR DRIVES FINE.
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