Doesn't appear to be overheating, and temp gauge seems to be working fine. I had the same problem and it was the gas tank. The ignition system is responsible for igniting the air-fuel mixture inside the engine to create the energy needed to propel your car down the road. Replace your fuel filter and ad a pre filter like this one. Vacuum leak will affect idle before anything else and certainly not at 40-45 mph and nowhere else. This can be a chronic problem, or it can only last a few seconds before the transmission works properly again. It's FREE! Have you checked the spark plugs? which of the 4 wires to connect? For me the magic speed was 45 to 50mph. 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 will be trying some cleaner in the fuel tank to see if it's the injectors, along with some premium gas. Why, if you think it through, should it be otherwise. When trying to answer why your car hesitates when accelerating, the most common reason might be the mass airflow sensor is clogged or damaged. Additional questions welcomed. (Kirchoff's third law), Measuring is knowing.. but only if you know what you measure. 94,000. The 2 wires leading to the sensor element will always read open. If I should need to change out the metal fuel lines, does anyone know the correct size for rubber tubing to connect from the gas tank forward? Much appreciated. 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. 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. went to dealer. I noticed that. I just recently acquired the car from a friend of the family. But this too would be noticeable at many speeds. Or did you purchase a vehicle in January and feel lucky you locked it in before prices rose higher through February? 94,000. to Amazon, eBay and other sites may include affiliate code. I always need things like oil, filters, shop rags that I can purchase with the credit. I am going they the same issue with my sons 99 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. Those cars ran fine as well. Doesnt using an abbreviation only to then state what the abbreviation stands for really defeat the purpose of aforementioned abbreviation? Its new in box and I'm happy to pass it on for less than I paid for it (I paid $65.00). Here's what you might discoverand what you can do to fix the problem: Dirty air filter. Problems with the ignition system will often cause the engine to misfire and hesitate under load. See Also: Drive-By-Wire Throttle Pros/Cons. How many miles? I don't understand why it drove perfectly that one time and I can't recreate it now. Have you taken it to a local mechanic for an inspection? The radiator fan operates on a fused circuit with high amperage relays to drive them. If it's been sittting, you may have condensation and/or rust in the tank making it's way through the system. Have a 1998 manual trans. I'm going to try that next. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into the motor. 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 Fix: Replace the air filter. Sometimes this can be a quick, cheap, easy fix for initial stumbling and hesitation when you step on the gas. At that moment, a bad transmission can cause the car to jerk, and that could be accompanied by a loud "slamming" noise. Shaking subsides at around 45 mph. 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. Fuel System. Still at it. just had this problem with a 2002 saturn sl2 turns out it was a fuse under hood labeled TRS Hi all. a friend. Tugging can be the result of ignition, EFI, fuel pump pressure, and even the secondary "Trac" engine de-throttling servo. Fiberglass tub. Paste as plain text instead, 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. Faulty Transmission Control Module moving you to the technical section, should get more views there. My car was jerking as well. Camera Tripod: https://amzn.to/2Jwog8S6. When this happens, the traffic lights indicator works abnomally (blink faster). Your vehicle could have dirty fuel injectors, a damaged fuel pump, a blocked catalytic converter, a faulty mass airflow sensor, broken spark plugs, or even an accumulation of moisture. I replaced the spark plugs last night after reading your first post Marde. While accelerating vehicle started to shake between 30-40 mph. Hesitation will be the beginning of your troubles so look at it as a warning sign if you notice your engine hesitate when you accelerate from a stop. 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. I basically have to push pedal 3/4 way down so that it downshifts and accelerates.. either. Misfiring might be occuring. Pasted as rich text. Unfortunately Im still at a loss for answers and I am darn close to rolling her down the quarry lol. looked at that yet? Could it be a thing like the TC engagement going wonky? This started around may 2012 with 99,000 miles on the car. If press hard it downshift, revs high and pull but it is inacceptable driving style. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Mailing Address:9169 W State Street, Suite 2867Boise, ID 83714. 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. That was EXACTLY the complaint, tugging between 30-40 MPH, the most often driver of our '95 LS400 had. Car hesitates when accelerating. 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 car hesitate when i step on the gas. 1900-2100 or so) and only when shifting from 2nd to 3rd. Car hesitating while driving. It only occurs while accelerating between 40-45 mph. When this fails, this can cause an imbalanced air/fuel load to be supplied to the motor which results in an over fueling or under fueling situation depending on the conditions. Instead of going faster by stepping on the accelerator pedal, the speed will be reduced. Saturn 4 door stick , 1.9 . This is what it means when the car engine hesitates. Still my is not starting smoothly. Yours is a very difficult problem to diagnose without seeing the live engine data. Started 4 hours ago, By Has the problem gotten worse since the mechanic changed those parts? When this is not working properly, you may also notice a strong smell of fuel. 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. This giveaway is open worldwide.7. 4k Camera: https://amzn.to/2HkjavH4. wish to see you more in the coming days. We may earn a small commission from affiliate links and paid advertisements. 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. Could still be a carb issue even after rebuild. By That will be my next step. Sometimes simply cleaning the MAF may do the trick, too. No problems starting and traveling at slower speeds but once again 20 mins into the drive traveling between 40-45 mph the sputtering began. 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! After. 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. If any of the vacuum hoses around your engine become damaged or worn out, you could experience air leakage from them. Observe where they sit both when its hot and cold outside. I've been an auto mechanic for the past 50 years and I'm here to share my knowledge with you.Here's our weekly video schedule:Monday: Tool giveawayTuesday: Auto repair videoWednesday: Viewers car mod show offThursday: Viewer Car Question Video AND Live Car Q\u0026AFriday: Auto repair videoSaturday: Second Live Car Q\u0026ASunday: Viewers car show offSecond Daily Upload Every Afternoon of Live Car Q\u0026A videos as well!Scotty Kilmer is a participant in the Amazon Influencer Program.#savagescotty Car hesitation. All 4 are the same sensor its just the cable lengths which are different. How to fix engine hesitation during acceleration. Now it is starting to stall when stopped. Tighten gas cap / valve actuates . Davidson has written articles for various websites. owners, Over 25,000 topics, from beginner tips to technical Get a chance to show off your own car on Sundays. An engine that hesitates when accelerating is either sucking too much air, not getting enough fuel, or misfiring. Asked by Guru94BPVD Sep 12, 2020 at 04:13 PM about the 2017 Hyundai Elantra SE Value Edition FWD. 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. Clogged fuel filter. when I try to stay at 40 45 mph my car chugs jerks slightly, but when I hit the gas it goes away only usually at those speeds. 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 1991 Toyota MR2 with a 2.2 liter engine and 5-speed stick. Affiliate Disclosure: We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. I have a Denso 234-4167 Oxygen Sensor that I ending up not needing. Why don't we agree to call the described symptom as engine "tugging" rather than "misfire" which could be misleading. So if you are handy with a soldering iron and shrink tubing you could adjust the cable harness length to suit. Same symptoms as you describe. 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. Michael Davidson started writing screenplays in 2003 and has had a screenplay professionally produced. 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. An engine hesitation is an interruption of continuous power during acceleration. Codes don't solve everything. Display as a link instead, wrong gear for the right speed or vice versa . Jun 16, 2016. However, there is a long list of other reasons which could be the cause of this hesitation problem too. Help? WHY DOES CAR HESITATE AROUND 40MPH AND STARTS TO JERK. When the issue persist, it grow worse that, the RPM will get close to zero. I have had the car in the shop at least 4 times for this problem, which has improved, but it is not completely resolved. Timing could be out. Drive it long enough that way & a CEL will appear, prob. Valvegoodluck!!!!!! 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. What could be the cause? It is a 350 it did over heat but head gasket good no water in oil or over heating . A bad transmission often will kick violently when trying to change gears. Had one of my U joints replaced. Especially around 45mph. You don't even mention coils which are a known weak link of these cars. Thanks for the suggestions so far. You are using an out of date browser. You could check basic things like spark plugs and wires, injector functionality, and engine air filter cleanliness. ;), 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. When I apply throttle it hesitates and stumbles. If I tried to give it gas the sputtering became more noticeable and it seemed to lose power, although it never stalled. When the engine is first started cold it is running open loop and the O2 sensors aren't used at all. To help you pinpoint the cause of this problem, below are 10 of the most common causes of engine hesitation while driving. 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. Youll probably need to take it somewhere to have the issue diagnosed. I have a 2012 traverse. 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.
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