Still at it. they were not sure how to fix it. A bad transmission often will kick violently when trying to change gears. I tried replacing the MAF and MAP sensors first. When the engine reaches operating temperature both Hello, thanks for writing in. The contact stated while driving approximately 40 mph, the vehicle began to shake and decelerated to 10 mph independently. Hi all. 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. However, there is a long list of other reasons which could be the cause of this hesitation problem too. For a better experience, please enable JavaScript in your browser before proceeding. Thats about the speed when a bad fuel pump gives up. This is how the timing of fuel injections into the chamber is made. 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. When this is not working properly, you may also notice a strong smell of fuel. 45 mph it sputters When I bought it they said Are you currently in the car market and getting discouraged by high prices? I ran Gumout through the gas tank, changed plugs, wires as well installed a brand new EGR. If yes, what happens at 40 to 45 mph ( with light throttle) is your car is going into 4th gear. I took several days before reseting the CEL "took". I think 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 ? My Honda Pilot 04 hesitates while picking up after I had slowed down a bit. Sometimes simply cleaning the MAF may do the trick, too. They are so much better. "It is better to be careful a hundred times than to get killed once" - Mark Twain, Where it smokes.. is the current too high! Follow the red battery cable to the inner fender relay and this should be your problem. I will be trying some cleaner in the fuel tank to see if it's the injectors, along with some premium gas. you all about my successes and failures. Mark helpful 60 ESBJr answered 7 years ago Thanks for the help.I'll try those. Alpine s10" dual 2 ohm voice coil Subs in a ported box JBL GTO-14001 1500w amplifier, tint, stock everything else! I also smell a burning smell coming from under the hood when driving and I dont know if its oil or fuel etc. The Fora platform includes forum software by XenForo. So Sunday we packed up and headed back home, and about 30 mins into the drive traveling about 45 mph the engine started sputtering. They definitely needed replaced, but that still didn't fix the bucking issues. It's driving me crazy to figure out what it could be. If I am not driving at that speed and accelerating in the same rpm range . I have a '96 saturn sl1. Could it be a thing like the TC engagement going wonky? My computer for editing / uploading: https://amzn.to/2uUZ3lo7. Replaced the rear differential's front mounting cushion to clear up the problem. 1) Either transmission chooses wrong gears around 30-40 mph speed or something else, but car jerks sometimes significantly. Hesitation on acceleration. My next step will probably be to install a new fuel We have a 2008 G6 with a V6 engine. Then on the advice of a friend and car enthusiast, I had the transmission serviced at my next oil change. Billy from United States 7 years ago BI Comment Same issue here 17 reports 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. 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/. Hesitation. 94,000. By Please refer to CarGurus Terms of Use. It looks like you're new here. When the issue persist, it grow worse that, the RPM will get close to zero. I have a 2012 traverse. Help? SOURCE: hesitation at 40mph and 50 mph. 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). Well, you gotta first check the basics. Sometimes this can be a quick, cheap, easy fix for initial stumbling and hesitation when you step on the gas. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. The Fix: Replace spark plugs. Scottys Top DIY Tools:1. I was then told my throttle body needed to change and so I bought a new one. Camera Tripod: https://amzn.to/2Jwog8S6. If you can use a scanner live data check your oxygen sensors especially the upstream sensors can cause all kinds of problems and sometimes won't throw a code ! ehabmarco It has been a work in progress, and around April I finally got it running after rebuilding the carb. If you give it WOT the stumble will not happen or if you do like a passing a car event, the problem . What is interesting about the problem is that it only occurs as follows: driving at around about 60 miles an hour and slowly accelerating. There will be one winner of a fuel pressure test kit valued at $46. The car does hesitate when at 35-40 mph and above and it response very poor when press accelerator slowly and steadily. ESBJr, have you ever found out what the problem If this sensor goes bad, the engine control unit will be unable to keep the right balance in the mixture. this happened on one of my previous cars, it was the spark plugs and the distributor. Youll probably need to take it somewhere to have the issue diagnosed. Wheel balance issues tend to manifest in that speed range. Prior to EFI there was no feedback loop on fuel trim (remember those things called carburetors?). When you purchase through links on our site, we may earn an affiliate commission, which supports our community. After 45 mph it stops and I have no other issues. I suspect you cleaned, as anyone would, the MAF/IAT sensors at the same time, more likely the actual "misfire" cause, as installing the O2 sensor. Fuel filter. For a better experience, please enable JavaScript in your browser before proceeding. 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. I have a Denso 234-4167 Oxygen Sensor that I ending up not needing. just had this problem with a 2002 saturn sl2 turns out it was a fuse under hood labeled TRS How to Fix Car Hesitation, DIY with Scotty Kilmer. Why don't we agree to call the described symptom as engine "tugging" rather than "misfire" which could be misleading. This helps the engine control unit determine the right amount of fuel to inject into the chamber. A partially clogged cat will act like a rev limiter. Will start on changing out the fuel filters and checking out the fuel pump with disassemble. Hey guys, went out and purchased a clear filter like Rudi posted up. I also sense wiring problem and rewire have try to check the wire and tape where necessary, he said i should go and drive it for a while.. what should I do? This comes and goes but happens enough that I have a service appointment scheduled for tomorrow with the dealership. If you have an account, sign in now to post with your account. In your shoes, I would delay doing the fluid replacement stuff until after doing the basics and then continue hunting the sputter/bucking problem. Pasted as rich text. I tried the MAF/MAP route but had no luck. There are a range of reasons why your car is juddering when you accelerate. What causes a car to hesitate when you accelerate? If any of the vacuum hoses around your engine become damaged or worn out, you could experience air leakage from them. The radiator fan operates on a fused circuit with high amperage relays to drive them. I'll see how the car runs as the weather gets warmer here in Chicago. 2014 Ford Escape with 88k miles. hesitate to tell me that it is very likely the MAF If you have not cleaned your fuel injectors for a long time, then theyre probably corroded with carbon deposits or other debris. Saturn 4 door stick , 1.9 . Your car hesitating when you accelerate is an issue that can be caused by transmission problems. I just purchased a code reader and as soon as Misfires can be related to wrong plugs being used. would replace it for $3500 it was simply 2 $1.39 fuses. Ive been lurking this forum for a while and tried to read every forum post related to this problem Im having. When the transmission shifts, engine noise usually will quiet down, and the RPMs will drop. Michael Davidson started writing screenplays in 2003 and has had a screenplay professionally produced. If you aren't going to deal with the tank immediately start carrying around fuel filters to swap out as they clog. The spark plugs may be dirty or worn. similar to what you describe) he didn't even Powered by Invision Community, Lexus LS400 / LS430 / LS460 / LS500h / LS600h Club, Hesitation (Misfire) When Cruising At 40 To 60 Mph. Come join the discussion on performance modifications, accessories, troubleshooting, maintenance and more! 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. Let me know and I will post them. Vehicle is a NON ecoboost AWD Customer complaint is hesitation while accelerating. Ignition, fuel system, vacuum, or torque converter issue would be my guess, but any of the above will set a code! I could see a faulty O2 sensor leading to a failed emissions test or lousy gas mileage but dramatic engine mis firing at a narrow band of speed seems something other than fuel trim is at fault. My car is a "beater" but now the problem has become a challenge. I had it flashing CEL for 10 seconds but it never stored a code (trust me, I have the stuff to find out). I could take my foot off the accelerator and then reapply and my vehicle would work fine then. This problem can develop at any speed, depending on which gear of the transmission is going bad. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Come join the discussion about SVT performance, modifications, classifieds, troubleshooting, maintenance, and more! It may not display this or other websites correctly. Tighten gas cap / It doesn't happen all the time and doesn't matter what kind of incline I'm on. 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. This time more frequently and with some stalling. I find the best price for oxygen sensors, and quality, the densos on amazon are pretty much literally a perfect fit just like OEM. I noticed that during acceleration onto the freeway or on inclines, the vehicle would start to hestitate or stutter as I referred to it. Mechanics have been little help to this I have changed the spark plugs. This was traced back to a light film of corrosion on a coil wire. About a 90 min drive from where I live in Virginia. As you go down the road it has a slight jerking action. Kindly advice Sir. My 2001 Acura TL is starting to hesitate when accelerating, then starts slowing down. To help you pinpoint the cause of this problem, below are 10 of the most common causes of engine hesitation while driving. The mass airflow sensor, also known as the MAF sensor, is connected to the air cleaner. Tool giveaways every Monday to help you with your own car projects. This may be a sign of a dirty or failing mass air flow sensor. Nissan sentra 2012 My car hesitate on red light. Entrants that do not comply with YouTubes Community Guidelines will be disqualified: https://www.youtube.com/yt/about/policies/#community-guidelines16. Timing could be out. ALREADY CLEANED INJECTORS AND CHANGED EGR GASKET. Car advice. Car hesitates when accelerating. 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. You should clean your MAF sensor if you haven't lately. pump. If your ECM is adjusting the engine to run too rich this could happen. if they carry the part. You will need to figure out the cause of this problem and get it fixed by an experienced mechanic. 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. A catalytic converter is responsible for reducing the amount of pollutants that exit out of a car's exhaust. pperro57@gmail.com. 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! Our certified mechanics come to you Backed by 12-month, 12,000-mile guaranteeFair and transparent pricing. Id visit a mechanic to get it checked out as soon as possible. No noticeable vacuum line cracks/breaks. Spark plug health, Air Filter clean, Fuel Filter replacement. Sounds like something got messed up at the last service, if those problems have only occurred since you were in the shop. (Manifold Air Pressure Sensor) any chance you Yours is a very difficult problem to diagnose without seeing the live engine data. Put the clear filter on and we are up and running past 40-45mph without the sputtering, hesitation and stalling. We'll see how that goes and move forward. The car hesitate when i step on the gas. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. But could you elaborate more how to test it I did not understand how to test the voltage? Common issues include: Good work ehabmarco. CLEARED CODES AND CAR DRIVES FINE. Any ideas what it could be or where to . It did great going down there and throughout the week that we stayed. I would suggest having a professional from Your Mechanic come to your home to diagnose your mass air flow sensor. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Mailing Address:9169 W State Street, Suite 2867Boise, ID 83714. Battery Pack Car Jump Starter: http://amzn.to/2nrc6qRAmazon Version of Fuel Pressure Tester: https://amzn.to/2pDXiDsMechanic Monday Official Rules:1. Codes don't solve everything. This one stayed. Its new in box and I'm happy to pass it on for less than I paid for it (I paid $65.00). 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. At that moment, a bad transmission can cause the car to jerk, and that could be accompanied by a loud "slamming" noise. You are using an out of date browser. If your car is moving at 40 mph but is unable to accelerate any further, the transmission probably needs service or replacement. 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. Im not sure I understand the question. Is it just on cold start, certain ambient temperatures, etc? The ignition wires may be bad. which of the 4 wires to connect? Your previous content has been restored. Amongst that group, all now pushing close too or over 200K, I have encountered numerous instances of O2 failures. guides, Check cars for recalls, common issues & maintenance I am truly stumped. what things should i check first? Lexus # 89465-50140 / Denso OEM # 234-4167 / Denso Universal # 234-4209 / Bosch OEM # 15272 / Bosch Universal # 15733, Bank 2 Sensor 1 - Passenger side (right front) on exhaust header. None of the mechanics I spoke with thought that it could be the crank sensor. Getting frustrated with money spending on hesitation problem.. mechanic have change injectors, pump, new iridium spark plug, filter and MAF.. Join the Lexus Owners Club and be part of the Community. If you want to eliminate the torque converter, just press on the brake pedal a bit when the problem occurs. You might want to drain a little fuel into a glass jar while you're doing it "just for giggles". It will definitely be cheaper to have a proper diagnosis than to fire the parts cannon at the problem. Lexus # 89465-50120 / Denso OEM # 234-4138 / Denso Universal # 234-4209 / Bosch OEM # 13441 / Bosch Universal # 15733, Bank 1 Sensor 2 - Driver's side (rear) near catalytic converter. Any suggestions? If after replacing them I still have issues, I'll post back here for more possible solutions. The car has started jerking around 40-50 mph my wife said the a few weeks ago. I'm going to look into the air and fuel filters tonight after work. 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 . Check and change the starter relay on the inner fender near the battery. YourMechanic All rights reserved. Let's Jump In! Clogged fuel filter. Faulty filters - such as air filters and fuel filters - can cause engine hesitation during acceleration. When does it happen? Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter. For a better experience, please enable JavaScript in your browser before proceeding. Video editing software: http://amzn.to/2jv5Fhf8. JavaScript is disabled. 2. How to stop car hesitation. If you can still snap the throttle wide open & the tach responds appropriately, it's not the cats. I took my Toyota highlander 2003 for servicing, plug changed, injector nozzles washed, & MAF cleaning. 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. I unhooked the old filter and I could not believe the junk that came out of it. What seems to make the problem better or worse? I basically have to push pedal 3/4 way down so that it downshifts and accelerates.. Bad spark plugs, sensor failure, and bent valves can all cause engine loss of power, thus . 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. There's a wealth of information to be found in what you get from it. Car Jerks When Accelerating - Reasons & Solutions Its new in box and I'm happy to pass it on for less than I paid for it (I paid $65.00). 2016 chevy equinox stalling after putting gas in the car? If it happens mainly with acceleration, even slight acceleration, you may have a plugged catalytic converter. In any case, you will likely find the problem relates to an imbalance in fuel and air mixing in the chamber. We are possibly buying a saturn outlook with But this too would be noticeable at many speeds. The car may be pulling timing for some reason when its hot. It is possible for you to mistakenly think your gears are slipping when in fact it is your engine hesitating. JavaScript is disabled. The Fora platform includes forum software by XenForo. Must be 18 years or old at the time of entering this giveaway OR have your parents permission.6. 2 people found this helpful. Id take it back and have them double check their work. So if you are handy with a soldering iron and shrink tubing you could adjust the cable harness length to suit. year amongst other things. Common Sense3. You could check basic things like spark plugs and wires, injector functionality, and engine air filter cleanliness. 2023 CarGurus, Inc., All Rights Reserved. I have a 1991 Toyota MR2 with a 2.2 liter engine and 5-speed stick. 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. What could be the cause? I don't think it is a transmission issue as the transmission will shift with no affect on the shudder. (Kirchoff's third law), Measuring is knowing.. but only if you know what you measure. Car runs great between 0-40 mph and from about 50 mph on up She kept it well maintained from what I was told. Im not sure. Posted by Anonymous on Mar 16, 2015 Answer Pierre Laplante Ford Master 2,061 Answers Posted on Mar 16, 2015 Open Questions: It would be best if you replace or clean the dirty air filter to stop this problem. Low fuel pressure will cause the engine to run very leanly, and therefore it may cause the engine to sputter. Just the other day it started bucking and sputtering around 40-45 mph while driving on the highway. It may not display this or other websites correctly. It doesn't happen at lower speeds. Could be bad gas or an unrelated issue. To help you pinpoint the cause of this problem, below are 10 of the most common causes of engine hesitation while driving. I' have also changed the EGR but that did not help By the way this was after 3 mechanics looked at it and said it was the transmission and they When going up hills at speeds of 30-40 mph is misses. Also, you should buy a rebuildable / serviceable fuel filter.