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Learn how to fix your car and how it works. 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 was the plug and wiring for the plug. (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. Id take it back and have them double check their work. I don't understand why it drove perfectly that one time and I can't recreate it now. 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. The engine then stalled. DIY car repair with Scotty Kilmer, an auto mechanic for the last 50 years.Thanks for watching! Tugging can be the result of ignition, EFI, fuel pump pressure, and even the secondary "Trac" engine de-throttling servo. to Amazon, eBay and other sites may include affiliate code. Yours is a very difficult problem to diagnose without seeing the live engine data. Fuel pump / pressure , cat is plugged , egr valve : I always need things like oil, filters, shop rags that I can purchase with the credit. CLEARED CODES AND CAR DRIVES FINE. If yes, what happens at 40 to 45 mph ( with light throttle) is your car is going into 4th gear. I have not tried changing the fuel pump or filter yet. Get a chance to show off your own car on Sundays. I have a 2005 Ford Focus Wagon and it does the same thing! So new spark plugs, battery, oil changes etc. Started February 16, 2022, By Its the Bank 1/2 post CAT sensor. JavaScript is disabled. The winner will receive a reply to their originally posted comment in the video and will also be announced in a newly posted comment by Scotty around Sunday 9 am CST. About a month or so ago, the car started hesitating, almost a sharp jerking, when it gets to around 40-50 MPH. It's driving me crazy to figure out what it could be. 2023 My 2001 Toyota 4Runner when the engine is either hot or cold and in neutral when trying to rev the engine it has a big hesitation and falls on its face and then revs up every time. It appears that if you had "read" the actual code it would indicated an open O2 sensor HEATER, not the sensor itsself. Jun 16, 2016. Check back in a few days if youre interested. I put my fuel pump direct without a return pipe. It's like the truck shouldn't be shifting that soon. If so, I can post the diagnostic procedures from the '92 Repair Manual. By There's a wealth of information to be found in what you get from it. Weather seems to have an effect though. It is real worse on highway when cars get hot. If your car is moving at 40 mph but is unable to accelerate any further, the transmission probably needs service or replacement. Still at it. A bad transmission often will kick violently when trying to change gears. If the car is traveling 40 mph and the speed suddenly falls while the engine continues to rev, the transmission probably is to blame, especially if pushing the accelerator has no effect and the car continues to slow down. Either the engine is cool or hot. It's often difficult to discern the difference between an ignition misfire and a torque converter malfunction. Based on this information, the engine control unit will know if there is too much or too little oxygen being ignited in the chamber. Affiliate. lol. It's FREE! problem started the first day of new car purchase. I assumed that once the ECU detected that one of the sensors was faulty it simply relied on the opposite for fuel trim corrections/adjustment. But if this sensor is bad, then the wrong amount of fuel will get injected and cause engine hesitation. The 2 rear diff'l mounts are still in the freezer awaiting a nicer day. . I would suggest having a professional from Your Mechanic come to your home to diagnose your mass air flow sensor. It comes on as I get below 40. Additional questions welcomed. If you want to eliminate the torque converter, just press on the brake pedal a bit when the problem occurs. It goes away when I get out of that window of speed or push OD off. Car hesitation. That's also why a crack in the exhaust, even downstream of the O2 sensor element, will result in a CEL, oxygen can get to the sensor before it has time to cool. Car is An engine hesitation is an interruption of continuous power during acceleration. However, sometimes car jerks when accelerating is a common problem faced by several car owners. Will try and let ehabmarco It is usually the result of a problem with the air and fuel mixture within the combustion chamber. I have replaced the plugs, coil packs, fuel filter, transmission was serviced - new filter/fluid and it still does it. 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. A forum community dedicated to Ford Focus owners and enthusiasts. http://www.g6performance.com/forum/showthread.php?t=22038. 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 . Follow the red battery cable to the inner fender relay and this should be your problem. What is your rpm at 40 mph on a level road? You can post now and register later. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. As you go down the road it has a slight jerking action. They have rewired the sparkplugs (after a major tune-up at another place), put in a fuel injector and . Can you describe the hesitation problem in as much detail as you can? Yes it is an automatic. If you let your fuel injectors continue to be dirty, then it will impact how much fuel gets injected into the chamber. You cannot paste images directly. I have a2016 Nissan Sentra my car flutrate sometimes like it wanna kill ,put it on a machine and no codes come up,Can u tell me whats wrong. I have the same thing on mine but hasnt changed with all new coils and plugs. The jerking happened in my car also(G6 V6 GT). Entrants are required to release YouTube from any and all liability related to this giveaway.17. about 6 months ago from a friend of My car hesitate when you start and start driving it does not move then after a jurk it moves. So now comes the task of draining and cleaning the gas tank. The car does hesitate when at 35-40 mph and above and it response very poor when press accelerator slowly and steadily. Privacy notice: any and all personal data collected from the entrants and winner will only be used to announce the giveaway winner. weather permits, I'll be checking the engine with it. It doesn't happen consistently. 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/. This may cause a hesitation, loss of power or jerking reaction when this sensor is malfunctioning. Could be a number of things. Those cars ran fine as well. For a better experience, please enable JavaScript in your browser before proceeding. Shudder or Vibration While Driving at Speeds Between 35 and 40 MPH on Acura MDX Problem Description A shudder or vibration may develop while driving at speeds between 35 and 40 MPH. either. moving you to the technical section, should get more views there. Faulty filters - such as air filters and fuel filters - can cause engine hesitation during acceleration. The Fora platform includes forum software by XenForo. Does it happen in any gear? JavaScript is disabled. Your previous content has been restored. hesitates around 40 to 60 mph. Any type of miss, or lean condition, like a clogged injector will cause a code to be set. If Hello - from your symptom description, you have a worn out or damaged Constant Velocity joints (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-damaged-cv-joint) on one or both front axles. I have a 1978 FJ40 which I've owned since 2007. Let me know and I will post them. Getting ready to change the up-line O2 sensor(s) and then maybe the MAP if the O2s dont work. The odds of winning are based on how many people enter the giveaway.9. Must have been his 'beater' car. If you are using bad fuel which is has been sitting in your tank for too long or is too low of an octane for your engine, it can cause many different problems. pump. This will cause hesitation as you accelerate. If you have not cleaned your fuel injectors for a long time, then theyre probably corroded with carbon deposits or other debris. Question type: Maintenance & Repair. An engine that hesitates when accelerating is either sucking too much air, not getting enough fuel, or misfiring. EPB, BMS for Specific Vehicles, Software Lifelong Free Update, NOT Support All Cars $199.00 . It's frustrating to say the least! This is how the timing of fuel injections into the chamber is made. Amazon Version of Fuel Pressure Tester: https://amzn.to/2pDXiDs2. If you pull the plugs, how do they look? Help? It happened to me a couple weeks ago. 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. Are you asking if oil on plugs could cause a bad fuel pump? The fan motor itself is also a possible and common failure point. but wouldnt that throw a code? BEST Place to SELL 1994 LS400 LEXUS with 166,000+/- miles. The hesitation around 40 and 50 would be in keeping with that theory. 03-30-2004, 11:11 AM. Car hesitating while driving. We took the car to the dealer where we purchased it and they were unable to find anything because there were no codes present. and seems to be lacking proper fuel pressure and ALL have result in a CEL but NONE exhibited any physical indication of fault. 2. You are using an out of date browser. Just make sure nothing metallic can touch both lugs at once to avoid a short, and possible fire. Copyright 2023 Leaf Group Ltd. / Leaf Group Media. Ecu not sending signal to spark plug harness? It will accelerate past 40, but seems to have trouble. Same symptoms as you describe. 11. F133S with LC-10 S-Series Large Body FUMOTO Valve with Short Nipple and LC-10 Lever Clip for 12mm-1.25. It will definitely be cheaper to have a proper diagnosis than to fire the parts cannon at the problem. You might want to drain a little fuel into a glass jar while you're doing it "just for giggles". It only occurs while accelerating between 40-45 mph. Are there any codes stored? Recall the primary O2 sensors are to trim (fine tune) the fuel map. No problems starting and traveling at slower speeds but once again 20 mins into the drive traveling between 40-45 mph the sputtering began. The mass airflow sensor, also known as the MAF sensor, is connected to the air cleaner. Send me a private message if you are interested. Disclaimer: Links on this page pointing The engine control unit depends on the MAP sensor to determine the engine load. They are as follows: Bank 1 Sensor 1 - Driver's side (left front) on exhaust header. Once this started to happen I immediately turned around and went home. When I bought it they said 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. describing the symptoms (which are extremely It hesitates for a second and then takes off. (Engine Oil Viscosity Explained), How to Debadge Your Car (In 3 Easy Steps), Should I Cover My License Plate Online? What seems to make the problem better or worse? TCS light stays on for days, and then comes off for like a week, then comes back on for days again. Could be bad gas or an unrelated issue. Codes don't solve everything. just had this problem with a 2002 saturn sl2 turns out it was a fuse under hood labeled TRS If your ECM is adjusting the engine to run too rich this could happen. 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?