This along with using 87 octane or higher gas solved the issue entirely. Car likes cooler weather and my problem My car was jerking as well. When this happens, the traffic lights indicator works abnomally (blink faster). Do I need to get a specific tool, or take it somewhere to get tested? This helps the engine control unit determine the right amount of fuel to inject into the chamber. When the engine reaches operating temperature both Hello, thanks for writing in. I have a 1978 FJ40 which I've owned since 2007. 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. help please! When this is not working properly, you may also notice a strong smell of fuel. There will be one winner of a fuel pressure test kit valued at $46. Common issues include: That will be my next step. necessary and make sure pcv valve is good When I take the car out of gear there is no shutter. She kept it well maintained from what I was told. Started 4 hours ago, By I unhooked the old filter and I could not believe the junk that came out of it. Tool giveaways every Monday to help you with your own car projects. Turns out the spark plugs and wires were just worn. Bella Online: What Does a Car Transmission Do? When a engine is hesitating it will cause the car to lunge or surge which will cause a sudden jerk as the car slows down. Car runs great between 0-40 mph and from about 50 mph on up but the car jerks while eccelerating between about 40 - 50 mph. A good scan tool might reveal something but it may require that the car be hooked up to diagnostics while the actual event is occurring, so that data from various sensors and modules can be captured in real time and analyzed by a skilled mechanic. 45 mph it sputters The radiator fan operates on a fused circuit with high amperage relays to drive them. I noticed that. Im not sure. WHY DOES CAR HESITATE AROUND 40MPH AND STARTS TO JERK. I will be trying some cleaner in the fuel tank to see if it's the injectors, along with some premium gas. No problems starting and traveling at slower speeds but once again 20 mins into the drive traveling between 40-45 mph the sputtering began. This comes and goes but happens enough that I have a service appointment scheduled for tomorrow with the dealership. (Kirchoff's third law), Measuring is knowing.. but only if you know what you measure. About a month or so ago, the car started hesitating, almost a sharp jerking, when it gets to around 40-50 MPH. At exactly 40 mph. Not sure whether the procedures are applicable across all 1st gen models, though. $29.93. My mustang hesitates 40mph and gives me hill starts assistant not available ! about 6 months ago from a friend of It doesn't happen every day but more days yes than no. I have changed the TPS, coil, coil igniter/module, plugs, cap, wires, rotor. lol. Any thoughts? Depending on what carb you have, there may be a small screen where the fuel pipe attaches to the carb at the float bowl. I also smell a burning smell coming from under the hood when driving and I dont know if its oil or fuel etc. I purchased my Torrent October 2014 and it had approx. The reason why car hesitates when accelerating uphill is simple! My car is hesitating / jerking at speed intervals of 20 mph, 30 mph, 35 mph and 40 mph. When does it happen? Thanks for all your input. The fan motor itself is also a possible and common failure point. looked at that yet? Replace your fuel filter and ad a pre filter like this one. A faulty ignition coil can cause the engine to misfire and hesitate under load. Only to find out that it was my EGR either. Currently am thinking of checking the electric work out, but i need advice. F133S with LC-10 S-Series Large Body FUMOTO Valve with Short Nipple and LC-10 Lever Clip for 12mm-1.25. The first and main symptom of a bad ignition coil may be the tachometer, which drops to zero then returns to the previous speed. The O2 heater resistance quoted as being required is quite a bit out of range with the actual factory shop/repair manual specification. wrong gear for the right speed or vice versa . weather permits, I'll be checking the engine with it. An engine that is hesitating to accelerate is most likely dealing with a fuel/air mixture that is too lean. Post Reply . My 2001 Acura TL is starting to hesitate when accelerating, then starts slowing down. 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. A bad transmission often will kick violently when trying to change gears. 1. I had them replaced and the jerking stopped immediately and hasn't come back. Any suggestions? similar to what you describe) he didn't even I have not tried changing the fuel pump or filter yet. Hi Everyone. 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. 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. The Fora platform includes forum software by XenForo. Could it be a thing like the TC engagement going wonky? Especially around 45mph. Never any sponsored content, just the truth about everything! No code. I'm having the same problem and being discussed in another thread. Billy from United States 7 years ago BI Comment Same issue here 17 reports x2 on the fuel system. make a purchase, we may earn a small commission. So now comes the task of draining and cleaning the gas tank. There's a wealth of information to be found in what you get from it. These are the f-body part #'s. About $65 for both solenoid and valve from Dal. but especially when "something" is wrong. Davidson has written articles for various websites. The most honest and funniest car channel on YouTube. Interestingly, such an act can help improve the lifespan of the engine. I just recently acquired the car from a friend of the family. I cleaned the carb and put some sea foam in it ..noticed have oil on spark plugs on threads and getting down into chamber . Not just one plug like three on pass side maybe one on other side .. now not smoking so. How difficult on the 3.5 V6? This time more frequently and with some stalling. How to fix engine hesitation during acceleration. Posted by Anonymous on Mar 16, 2015 Answer Pierre Laplante Ford Master 2,061 Answers Posted on Mar 16, 2015 Open Questions: If I tried to give it gas the sputtering became more noticeable and it seemed to lose power, although it never stalled. Fiberglass tub. If your car is moving at 40 mph but is unable to accelerate any further, the transmission probably needs service or replacement. don't seem to think the crank/cam sensors could be the culprit. Transmission hesitation at 40 mph. wherever) then clean egr or replace if 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. Ive been lurking this forum for a while and tried to read every forum post related to this problem Im having. 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. I took my Toyota highlander 2003 for servicing, plug changed, injector nozzles washed, & MAF cleaning. We have a 2008 G6 with a V6 engine. My car hesitate when you start and start driving it does not move then after a jurk it moves. Display as a link instead, There are a lot of things that can cause this. Always check your fluid levels, -then check your car. As the car approaches 40 mph, the RPMs will increase in the engine. Could be some debris in the secondary jet. Prior to EFI there was no feedback loop on fuel trim (remember those things called carburetors?). Good work ehabmarco. Many times, while driving the Drive (D) indicator & Reverse (R) indicator appear on the dashboard at thesame time, after sometimes it returns normal. Car hesitating while driving. just had this problem with a 2002 saturn sl2 turns out it was a fuse under hood labeled TRS When the transmission shifts, engine noise usually will quiet down, and the RPMs will drop. I am going they the same issue with my sons 99 Checked it for codes? Only happens in the top gear around 40-45 mph. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Mailing Address:9169 W State Street, Suite 2867Boise, ID 83714. 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. All lights, chimes etc stay on but no acceleration. How to fix it. Misfire is due to ignition, or lack thereof. I'm going to try that next. 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. If press hard it downshift, revs high and pull but it is inacceptable driving style. My 2017 Hyundai Elantra is hesitating shifting right. 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. 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. Timing could be out. Once Im going faster or slower it stops. Even if you purchased it online, you might be able to get a store credit at a local retailer like Autozone, Advance, Pep boys, O'Reilly's, etc. It is real worse on highway when cars get hot. You don't even mention coils which are a known weak link of these cars. About a month or so ago, the car started hesitating, almost a sharp jerking, when it gets to around 40-50 MPH. describing the symptoms (which are extremely totally fine. My car stalls when Im getting ready to pull of at a light and when I hit the gas I have hit hard for it to go and I have my fuel pump changed I have transmission leaks they were fix it just started doing it a few minutes and my car knocks while sitting a light and rattles when I take off sometimes, Any answers you described my issue to the T, I was wondering why does my car lose power/jerks and hesitates to accelerate when Im close to the E Ill have 60 miles of fuel left and it starts to act weird. It does it most often when you are barely on the gas at 45 to 50 MPH and then you press the gas to accelerate. See Also: Drive-By-Wire Throttle Pros/Cons. 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. It is really noticable when pulling out and gradually working up to around 40MPH. When going up hills at speeds of 30-40 mph is misses. During the week in the Outer Banks, I did notice one time that there was a slight hesitation and sputter during one of our evenings out. I had my throttle body cleaned, spark plugs replaced, wires replaced, had my driveline completely checked because at first it felt like a vibration but it is different. The car still struggles with acceleration, jerks more than it smoothly drives, shakes if I try to go too fast, brakes get hard sometimes and engine stalls forcing me to pullover and cut it off for a few mins before driving again. The spark plugs may be dirty or worn. the S series doesn't have a MAF but a MAP 03-30-2004, 11:11 AM. My car has an automatic transmission. There are a range of reasons why your car is juddering when you accelerate. 11. Battery Pack Car Jump Starter: http://amzn.to/2nrc6qRAmazon Version of Fuel Pressure Tester: https://amzn.to/2pDXiDsMechanic Monday Official Rules:1. Spark plug health, Air Filter clean, Fuel Filter replacement. The frustrating thing about the diff'l mount failure symptom is that there was no CEL at all. Just wanted to make you aware of a potential problem, and to include it as part of your search. Scottys Top DIY Tools:1. The car hesitate when i step on the gas. its worse when car is warmed up and reaching over 40mph what things should i check first? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Im not sure. Very rarely it jerks so bad . You are using an out of date browser. This could be accompanied by a hesitation in the motor when driving.