car hesitation around 40 mph

Timing could be out. Not sure whether the procedures are applicable across all 1st gen models, though. But don't worry because this symptom also has a solution like other car problems. They are so much better. My 2001 Acura TL is starting to hesitate when accelerating, then starts slowing down. Once Im going faster or slower it stops. Display as a link instead, Saturn Outlook we are looking at. The winner will be required to give Scotty their full name and mailing address to receive the prize.12. Your car hesitating when you accelerate is an issue that can be caused by transmission problems. Getting frustrated with money spending on hesitation problem.. mechanic have change injectors, pump, new iridium spark plug, filter and MAF.. Learn how to fix your car and how it works. Made with in Silicon Valley. 1) Either transmission chooses wrong gears around 30-40 mph speed or something else, but car jerks sometimes significantly. The hissing sound you are hearing is most likely a source of a leak in your cooling system. If i slowly and accelerate and do not push the pedal with force and try to keep the speed constant around 35 mph and then slowly accelerate from that speed it almost hesitates, feels extremely sluggish.. With his money, I would think he would be more of a Bentley man. What is your rpm at 40 mph on a level road? Quick edit: I confirmed the TPS was getting proper power voltage. Why don't we agree to call the described symptom as engine "tugging" rather than "misfire" which could be misleading. Car hesitation. By 1900-2100 or so) and only when shifting from 2nd to 3rd. Then you will experience engine hesitation which is most noticeable at low RPM. Why, if you think it through, should it be otherwise. Replaced the rear differential's front mounting cushion to clear up the problem. & atimes it works fine. brakes were replaced within the past CarGurus has 44 nationwide S-Series listings starting at $3,688. make a purchase, we may earn a small commission. Flat, hill, doesn't matter. but especially when "something" is wrong. If your ECM is adjusting the engine to run too rich this could happen. When is the last time the spark plugs have been replaced? Right around 40 in what I believe were the car is shifting into 4th gear or overdrive the car starts to jerk (RPM's do not fluctuate/MPH do) If I give it some gas at this point the jerking stops but may return at higher speeds. Doesnt using an abbreviation only to then state what the abbreviation stands for really defeat the purpose of aforementioned abbreviation? F133S with LC-10 S-Series Large Body FUMOTO Valve with Short Nipple and LC-10 Lever Clip for 12mm-1.25. The b-body EGR was designed to work with a certain amount of back pressure and has a tendency to fail early when used with a cat-back. I have a 1996 Saturn SC2. The engine will continue to rev as the car tries to accelerate above that speed, but the car will not be able to shift into gear for further speed. Car hesitates when accelerating. Red, Gozzard Fiberglass tub. Wrench Set: http://amzn.to/2kmBaOU5. I purchased my Torrent October 2014 and it had approx. I'm still thinking it could be the fuel pump or the crank and/or cam sensor. I had it flashing CEL for 10 seconds but it never stored a code (trust me, I have the stuff to find out). moving you to the technical section, should get more views there. I have a Denso 234-4167 Oxygen Sensor that I ending up not needing. For a better experience, please enable JavaScript in your browser before proceeding. would replace it for $3500 it was simply 2 $1.39 fuses. Could still be a carb issue even after rebuild. Clogged fuel filter. If I am not driving at that speed and accelerating in the same rpm range . One thing is for sure, you wont be able to drive safely if your engine keeps hesitating while youre on the road. How to stop car hesitation. When the engine is first started cold it is running open loop and the O2 sensors aren't used at all. Well a few more miles down the road it started again. I have a Denso 234-4167 Oxygen Sensor that I ending up not needing. a friend. 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. 1. Posted by Anonymous on Mar 16, 2015 Answer Pierre Laplante Ford Master 2,061 Answers Posted on Mar 16, 2015 Open Questions: Started February 16, 2022, By The fan motor itself is also a possible and common failure point. If it is just a bit of dirt or some moisture, then the best thing to . 4 inch lift, Winch, Aussie rear. Instead of going faster by stepping on the accelerator pedal, the speed will be reduced. I have a 1978 FJ40 which I've owned since 2007. 4k Camera: https://amzn.to/2HkjavH4. So now comes the task of draining and cleaning the gas tank. By the way this was after 3 mechanics looked at it and said it was the transmission and they Ecu not sending signal to spark plug harness? You might consider attaching a "trickle-charger" to the You may have a persistent overheating issue due to a clogged radiator (https://www.yourmechanic.com/services/radiator-replacement), blown head gasket, worn out water pump (https://www.yourmechanic.com/services/water-pump-replacement), etc. Had car serviced (Nissan Note 07) because I noticed acceleration issues. While not optimal from an emissions perspective the cars still ran fine. Fuel System. That will be my next step. which of the 4 wires to connect? 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. What is interesting about the problem is that it only occurs as follows: driving at around about 60 miles an hour and slowly accelerating. Bella Online: What Does a Car Transmission Do? To enter, simply leave one non-offensive comment in the video below.4. Jeff1104 The spark plugs may be dirty or worn. 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. You should clean your MAF sensor if you haven't lately. this happened on one of my previous cars, it was the spark plugs and the distributor. Observe where they sit both when its hot and cold outside. The oxygen sensor is responsible for calculating the amount of oxygen that was not burned in the exhaust system. 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. Depending on what carb you have, there may be a small screen where the fuel pipe attaches to the carb at the float bowl. This obviously means we are imagining it, NOT. This is how the timing of fuel injections into the chamber is made. Could this be caused from a clogged cat? andbeyond, Nov 16, 2017 #20. I'm going to try that next. Thank you for your fast reply. Changed throttle body and purge valve. Transmission hesitation at 40 mph. you posted. fuel pump. Tighten gas cap / Entrants are required to release YouTube from any and all liability related to this giveaway.17. Usually due to rust clogging the fuel filter because the tank if full of rust particles trying to make their way into your carb to clog that. You don't even mention coils which are a known weak link of these cars. It has been a work in progress, and around April I finally got it running after rebuilding the carb. It happened to me a couple weeks ago. This one stayed. This giveaway complies with all applicable federal, state, and local laws, rules, and regulations, including U.S. sanctions.15. Sounds like it does not like the autozone tps sensor. Its probably best to have a local shop take a look at the vehicle in person. This may be a sign of a dirty or failing mass air flow sensor. 1,520 Great Deals out of 20,946 listings starting at, Car jerks when accelerating between 40 & 50 mph. Idles a little rough at times as well. My mustang hesitates 40mph and gives me hill starts assistant not available ! 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? 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. The radiator fan operates on a fused circuit with high amperage relays to drive them. It's frustrating to say the least! If press hard it downshift, revs high and pull but it is inacceptable driving style. 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. 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. By 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 ? Also, a loose motor mount, or rear diff'l mount, might result in a tugging feel due to the resulting "in and out" action of the lockup clutch, at those speeds. I know my transmission is bad but is that all? Take off exhaust manifold and clean the If you want to eliminate the torque converter, just press on the brake pedal a bit when the problem occurs. weather permits, I'll be checking the engine with it. I always need things like oil, filters, shop rags that I can purchase with the credit. totally fine. So my rav just started this weird shaking/chattering at around 30-40 mph. If you aren't going to deal with the tank immediately start carrying around fuel filters to swap out as they clog. The car likely would still run fine at lower speeds, but it should be taken to a mechanic immediately. The car will jerk real bad when driving at a steady speed and also when slightly accelerating. When the transmission shifts, engine noise usually will quiet down, and the RPMs will drop. I'll see how the car runs as the weather gets warmer here in Chicago. 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. This started around may 2012 with 99,000 miles on the car. Step 1 - Check the ignition coils and spark plugs. Mark helpful 60 ESBJr answered 7 years ago Thanks for the help.I'll try those. It goes away when I get out of that window of speed or push OD off. pperro57@gmail.com. About a 90 min drive from where I live in Virginia. When the air/fuel mixture in your engine is too rich, a blockage can develop in the catalytic converter over time which disrupts the airflow of the exhaust system. Problems with the ignition system will often cause the engine to misfire and hesitate under load. How difficult on the 3.5 V6? 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. I noticed that during acceleration onto the freeway or on inclines, the vehicle would start to hestitate or stutter as I referred to it. It seems more Torque converter lock than loading. Hyundai Elantra 2012 MAF (Mass Air Flow) sensors We took the car to the dealer where we purchased it and they were unable to find anything because there were no codes present.