car hesitation around 40 mph

The Fora platform includes forum software by XenForo. How to fix car hesitation. My car was jerking as well. I have also noticed the same thing driving the car today. Why your car may be jerking, bucking, hesitating, or shaking in town or at highway speeds! While not optimal from an emissions perspective the cars still ran fine. That was EXACTLY the complaint, tugging between 30-40 MPH, the most often driver of our '95 LS400 had. This helps sustain the proper air and fuel mixture while the vehicle is in use. I tried replacing the MAF and MAP sensors first. About a month or so ago, the car started hesitating, almost a sharp jerking, when it gets to around 40-50 MPH. I'm thinking it I ran Gumout through the gas tank, changed plugs, wires as well installed a brand new EGR. For a better experience, please enable JavaScript in your browser before proceeding. It seems more Torque converter lock than loading. If you give it WOT the stumble will not happen or if you do like a passing a car event, the problem . The radiator fan operates on a fused circuit with high amperage relays to drive them. When this is not working properly, you may also notice a strong smell of fuel. Perhaps theres a lot of sediment at the bottom of your gas tank, perhaps your fuel gauge is reading incorrectly, or perhaps you need to change the fuel pump or fuel filter. We took the car to the dealer where we purchased it and they were unable to find anything because there were no codes present. 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. I have a Denso 234-4167 Oxygen Sensor that I ending up not needing. What is interesting about the problem is that it only occurs as follows: driving at around about 60 miles an hour and slowly accelerating. JavaScript is disabled. Id take it back and have them double check their work. mechanics. The The 2011 Mercedes-Benz ML450 Hybrid is Mercedes' first hybrid SUV. This is because something is wrong within the engine bay - what could that be? Learn how to fix your car and how it works. When does it happen? What seems to make the problem better or worse? Must be 18 years or old at the time of entering this giveaway OR have your parents permission.6. I have to shut off the engine in neutral and start again for it to move for a while and the same cycle happens again. hesitates around 40 to 60 mph. I had it flashing CEL for 10 seconds but it never stored a code (trust me, I have the stuff to find out). valve actuates . Hesitation Problem with 2007 LE I4. Hesitation. Come join the discussion on performance modifications, accessories, troubleshooting, maintenance and more! We may earn a small commission from affiliate links and paid advertisements. Change it out to a clear plastic one temporarily while you're sorting it out to see what kind of crap is coming out of the tank. 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. Started September 12, 2022, Lexus Owners Club of North America If there is a problem with your ignition system, such as with your spark plugs, rotor, or wires, then your engine will lose power at inconsistent times. Paste as plain text instead, Over the years I have been reponsable for the care and maintenance of a '90 LS (a Bill Gate's trade-in), a '91 LS, 3 '92's and a '95. This will cause hesitation as you accelerate. It's often difficult to discern the difference between an ignition misfire and a torque converter malfunction. I tend to agree. similar to what you describe) he didn't even Forgot to mention, older cars like yours and mine will often develop vacuum leaks within the intake system. Does it happen in any gear? 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. seemed to go from constant to intermittent. Recall the primary O2 sensors are to trim (fine tune) the fuel map. Indeed, over time, vibrations, the pot fasteners on the automobile chassis can come off.The most common reason for your Mitsubishi Outlander to have a clunking noise/sound coming from under your car is worn brake pads. If it happens mainly with acceleration, even slight acceleration, you may have a plugged catalytic converter. When I took ownership of it, I had the oil changed and it needed an new motor mount and front brakes to pass inspection. help please! Tugging can be the result of ignition, EFI, fuel pump pressure, and even the secondary "Trac" engine de-throttling servo. The throttle position sensor monitors the throttle valves position and then relays this information to the engine control unit. 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. Lexus # 89465-50130 / Denso OEM # 234-4630 / Denso Universal # 234-4209 / Bosch OEM # 13632 / Bosch Universal # 15733, Bank 2 Sensor 2 - Passenger side (rear) near catalytic converter. 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. Could be some debris in the secondary jet. 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. cant maintain a speed over 50 . Thanks. No redline, just a steady acceleration. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. This giveaway complies with all applicable federal, state, and local laws, rules, and regulations, including U.S. sanctions.15. Many times, while driving the Drive (D) indicator & Reverse (R) indicator appear on the dashboard at thesame time, after sometimes it returns normal. I will be trying some cleaner in the fuel tank to see if it's the injectors, along with some premium gas. Just a hunch. Robert, I have not yet found the answer. Asked by Guru94BPVD Sep 12, 2020 at 04:13 PM about the 2017 Hyundai Elantra SE Value Edition FWD. Any offensive, obscene, or lude comments will be ineligible to win the giveaway.8. All lights, chimes etc stay on but no acceleration. Flat rate pricing based on labor time and parts, Hand-picked, community-rated professionals, Trusted mechanics, rated by thousands of happy car Misfires can be related to wrong plugs being used. ;), Yes before changing the O2 sensor, The MAF/IAT sensors had been cleaned AND even changed without any improvement, One more thing I want to mention is that the O2 sensor was completely dead (no reading for any resistance), I knew that this sensor was faulty (I had a CEL) but I could not imagine that this is the reason of misfire, that's why I left it to be the last option. If you want to eliminate the torque converter, just press on the brake pedal a bit when the problem occurs. 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. The odds of winning are based on how many people enter the giveaway.9. The following problem occurred afterwards. When this is not working properly, you may also notice a strong smell of fuel. As you go down the road it has a slight jerking action. 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. You don't even mention coils which are a known weak link of these cars. The jerking does go away read more Mike V. technician Subaru and Nissan factory t. 35,628 satisfied customers As you go down the road it has a slight jerking action. They are so much better. Only one comment per entrant is allowed and more than one comment will not increase your odds of winning.5. In any case, you will likely find the problem relates to an imbalance in fuel and air mixing in the chamber. This obviously means we are imagining it, NOT. I did not mean to ask you to start searching for a vac leak. It's driving me crazy to figure out what it could be. Copyright 2023 Leaf Group Ltd. / Leaf Group Media. If so, the answer is no. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. I have changed the TPS, coil, coil igniter/module, plugs, cap, wires, rotor. You cannot paste images directly. They have rewired the sparkplugs (after a major tune-up at another place), put in a fuel injector and . Do you think its a sensor issue? You are using an out of date browser. Car hesitating while driving. They were worn and corroded. 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. around 40 mph. I'm still thinking it could be the fuel pump or the crank and/or cam sensor. It doesn't happen consistently. If you pull the plugs, how do they look? but wouldnt that throw a code? I know my transmission is bad but is that all? Its probably best to have a local shop take a look at the vehicle in person. The problem happens only around 20-24 MPH and around 40 MPH give or take a few MPH. He is a graduate of Michigan State University and holds a Bachelor of Arts in advertising. you all about my successes and failures. And to make it worse I had to sell a bunch of my tools when I moved so I dont have the same diagnostic abilities I once had. My next step will probably be to install a new fuel Sometimes simply cleaning the MAF may do the trick, too. Can you describe the hesitation in a bit more detail? His has none.yet! This is known to cause engine hesitation problems, so it should be addressed. When the transmission shifts, engine noise usually will quiet down, and the RPMs will drop. For a better experience, please enable JavaScript in your browser before proceeding.

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