problem started the first day of new car purchase. For a better experience, please enable JavaScript in your browser before proceeding. Now, I do know that You are using an out of date browser. Same symptoms as you describe. fuel filters, etc. either. I have the same thing on mine but hasnt changed with all new coils and plugs. around 40 mph. Hyundai Elantra Questions - Transmission hesitation at 40 mph - CarGurus Its new in box and I'm happy to pass it on for less than I paid for it (I paid $65.00). Took the car to the dealer to have it . 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 Do Not Sell or Share My Personal Information. However, there is a long list of other reasons which could be the cause of this hesitation problem too. It also makes noise when the cars sitting at a light or stop sign. point. 8 Reasons Your Car Engine Is Sputtering And How To Fix It - Mechanic Base OK for local driving. Flat rate pricing based on labor time and parts, Hand-picked, community-rated professionals, Trusted mechanics, rated by thousands of happy car Common issues include: You'll get info from other sensors, as well, like the MAP. 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/. The reason why car hesitates when accelerating uphill is simple! my car has loud knocking sound, and shifts real hard, 1998 Saturn S-Series 2 Dr SC2 Coupe For Sale, Do Not Sell or Share My Personal Information. Made with in Silicon Valley. It seems more Torque converter lock than loading. Still at it. I second the live data suggestion. Hesitation (Misfire) When Cruising At 40 To 60 Mph moving you to the technical section, should get more views there. If that doesnt do the trick, you may need to have them professionally cleaned or simply replaced with new fuel injectors. Yours is a very difficult problem to diagnose without seeing the live engine data. 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. When the transmission shifts, engine noise usually will quiet down, and the RPMs will drop. Misfire is due to ignition, or lack thereof. When outside air goes into the engine as part of the combustion process, the mass air flow (MAF) sensor measures how much of this air is going in. just had this problem with a 2002 saturn sl2 turns out it was a fuse under hood labeled TRS Its the Bank 1/2 post CAT sensor. 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. 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. 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. the heater is only used during initial engine start up. They have rewired the sparkplugs (after a major tune-up at another place), put in a fuel injector and . Camera Tripod: https://amzn.to/2Jwog8S6. Why, if you think it through, should it be otherwise. costs, Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, The statements expressed above are only for informational purposes and should be independently verified. This could be accompanied by a hesitation in the motor when driving. 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. The spark plugs may be dirty or worn. Weather seems to have an effect though. Misfiring might be occuring. Recall the primary O2 sensors are to trim (fine tune) the fuel map. Additional questions welcomed. Strange Vibration/Rumble at 40 MPH | Toyota RAV4 Forums A partially clogged cat will act like a rev limiter. 30-40 mph hesitation - Ford Truck Enthusiasts Forums Sometimes this can be a quick, cheap, easy fix for initial stumbling and hesitation when you step on the gas. What could be the cause? Check the fuel filter, fuel pump, etc. ;), 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. My Nissan Macra car hestates when pressing the gas pedal, it acts like losing the power! Must have been his 'beater' car. Today, I will be better than I was Yesterday, but not as good as Tomorrow! It was the plug and wiring for the plug. The car will jerk real bad when driving at a steady speed and also when slightly accelerating. Fuel filter. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. If it's less than 2k rpm, then you have the old programming, and should get the upgrade flash to the transmission (by a different dealership if need be). I tried the MAF/MAP route but had no luck. I could take my foot off the accelerator and then reapply and my vehicle would work fine then. Very common problem on the LS400 specially 1995/1996. I have a 1996 Saturn SC2. cant maintain a speed over 50 . About a month or so ago, the car started hesitating, almost a sharp jerking, when it gets to around 40-50 MPH. and seems to be lacking proper fuel pressure and Can you describe the hesitation in a bit more detail? You cannot paste images directly. The most honest and funniest car channel on YouTube. His has none.yet! Common Sense3. Have a 1998 manual trans. Faulty filters - such as air filters and fuel filters - can cause engine hesitation during acceleration. November 27, 2011 in 90 - 00 Lexus LS400, I am sharing my experience with this chronic problem of misfire at a certain speed when cruising that I see repeatedly in this forum, First I admit that this forum helped me a lot to find the cause of my problem but unfortunately after spending lot of money in changing many parts, First thing I want to say is that many issues can lead to the same symptoms of hesitation or misfire between 40 to 60 mph, Hesitation at this speed does not mean that the engine is only hesitating at this speed and THIS IS THE TRICK, The misfire is clearly felt at this speed because the torque converter clutch is engaged that means the engine and transmission are considered as 1 unit so any slight misfire in the engine will be felt in the transmission and this is happening only when cruising. Im not sure. Sign in or register to get started. 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. Have no idea why. Unfortunately Im still at a loss for answers and I am darn close to rolling her down the quarry lol. This started around may 2012 with 99,000 miles on the car. Thanks to this article I will also try cleaning the MAF but It still does it with the air cleaner disconnected but it is worth a try. I don't understand why it drove perfectly that one time and I can't recreate it now. At that moment, a bad transmission can cause the car to jerk, and that could be accompanied by a loud "slamming" noise. 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. Car Hesitates Around 65 - 70 mph - Mitsubishi 3000GT & Dodge Stealth Forum 3/4 i actuall had 2 fuses blown from a short in the wiring harnes the other was TRS CC Im not sure. 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. These are the f-body part #'s. About $65 for both solenoid and valve from Dal. Here's an excerpt on the various sensor cross referencing (of part numbers): There are four O2 sensors in the LS430. So I called and had it towed home the remainder of the way. Privacy notice: any and all personal data collected from the entrants and winner will only be used to announce the giveaway winner. How many miles? How to fix it. Engine V6 is hesitating when accelerating over 40 mph 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. It never stalled and otherwise drove great. I just purchased a code reader and as soon as Truck shudders between 45 and 55 MPH - Car Talk Community Observe where they sit both when its hot and cold outside. 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. Can you help diagnose? We are possibly buying a saturn outlook with Either the engine is cool or hot. No noticeable vacuum line cracks/breaks. For a better experience, please enable JavaScript in your browser before proceeding. If it is just a bit of dirt or some moisture, then the best thing to . remove and spray with carb spray and make the the Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter. At that moment, a bad transmission can cause the car to jerk, and that could be accompanied by a loud "slamming" noise. Is there some documentation on changing the spark plugs? Hesitation Problem with 2007 LE I4 | Toyota Nation Forum Hesitation/Stuttering While Driving Between 40-50 MPH vicjrblue Member Posts: 1 January 2016 edited January 2016 I purchased my Torrent October 2014 and it had approx. 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. Still my is not starting smoothly. in the engine (youll need a pick set like a We're a forum community dedicated to the Pontiac G6. Can you help diagnose? So Sunday we packed up and headed back home, and about 30 mins into the drive traveling about 45 mph the engine started sputtering. If you have not cleaned your fuel injectors for a long time, then theyre probably corroded with carbon deposits or other debris. Your link has been automatically embedded. 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. Standard mailing time from the win date and the date received, will depend on the winners geographic location.14. He has also studied martial arts since 1990 and has worked as a licensed security specialist. Get a chance to show off your own car on Sundays. So now comes the task of draining and cleaning the gas tank. 2. It happened to me a couple weeks ago. I'm still thinking it could be the fuel pump or the crank and/or cam sensor. So if you are handy with a soldering iron and shrink tubing you could adjust the cable harness length to suit. The '90 and one of the '92's are now off the list. It will definitely be cheaper to have a proper diagnosis than to fire the parts cannon at the problem. could be the crank and/or cam sensor(s). I have a Denso 234-4167 Oxygen Sensor that I ending up not needing. Any codes? hesitates when cruising at 40 to 60 mph. 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. How difficult on the 3.5 V6? Good work ehabmarco. Car Jerks When Accelerating - Reasons & Solutions Thats about the speed when a bad fuel pump gives up. I don't think it is a transmission issue as the transmission will shift with no affect on the shudder. Scotty Kilmer, gives you a chance to win a car product, by entering in this weekly giveaway. This may be a sign of a dirty or failing mass air flow sensor. You must log in or register to reply here. We were told car knocks real loud, and shifts hard to the point it jerks me back real hard. 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.. So, when next you notice the car hesitates and jerks when accelerating, it may be due to a dirty air 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. She kept it well maintained from what I was told. gas mileage has also tanked. I'm thinking it 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. The 2 wires leading to the sensor element will always read open. Has the problem gotten worse since the mechanic changed those parts? It was just inspected by my local Ford dealership, and everything was running smoothly. The vehicle has a stumble like a misfire(I think anyways) when driving. Only happens in the top gear around 40-45 mph. After. describing the symptoms (which are extremely 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. As the car approaches 40 mph, the RPMs will increase in the engine. would it benefit to replace the air induction system with an after market intake, or just go with a standard air filter replacement? Why does my car jerk at 40 mph? - Sage-Answers Car seems to hesitate 35-40 mph | Cadillac Owners Forum The 2 rear diff'l mounts are still in the freezer awaiting a nicer day. 1978 - 1996 Big Bronco - 30-40 mph hesitation - my 93 bronc 351 e4od runs and drives great but a few months ago i noticed that between 30 to 40 mph it sort of hesitates like it doesn't know whether to shift or not does anyone know what this might be? Have you checked the spark plugs? Any ideas or things to look at would be appreciated. I just recently purchased my 00 Focus SE with 96,xxx mi. Jeff1104 To help you pinpoint the cause of this problem, below are 10 of the most common causes of engine hesitation while driving. are western hognose snakes legal in the uk risk assessment for cleaning pigeon droppings To enter, simply leave one non-offensive comment in the video below.4. Any offensive, obscene, or lude comments will be ineligible to win the giveaway.8. For a better experience, please enable JavaScript in your browser before proceeding. This generally will happen at the same speed with consistency as the transmission continues to corrode. Why Your Car Hesitates When Accelerating From Stop: 11 Reasons Im not sure I understand the question. BEST Place to SELL 1994 LS400 LEXUS with 166,000+/- miles. Car hesitates when accelerating. If it is around 2k rpm, you have the newest programming. As the car approaches 40 mph, the RPMs will increase in the engine. Hesitation at around 45 to 50 MPH when you go to accelerate dentist tool you can get at autozone or Car is VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. If still having issue after that let me know. mechanics. Send me a private message if you are interested. What is interesting about the problem is that it only occurs as follows: driving at around about 60 miles an hour and slowly accelerating. Run sea foam through gas tank and It has started bucking under load, feels like it is losing a cylinder when accelerating and I get a sweet smell like kerosene. 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. If it happens mainly with acceleration, even slight acceleration, you may have a plugged catalytic converter. 1) Either transmission chooses wrong gears around 30-40 mph speed or something else, but car jerks sometimes significantly. Im not sure I understand the question. 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 ? I know my transmission is bad but is that all? The dealership did mention that since it was need 100,xxx mi. If so, I can post the diagnostic procedures from the '92 Repair Manual. Saturn 4 door stick , 1.9 . The car does hesitate when at 35-40 mph and above and it response very poor when press accelerator slowly and steadily. They are as follows: Bank 1 Sensor 1 - Driver's side (left front) on exhaust header. andbeyond, Nov 16, 2017 #20. 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. I unhooked the old filter and I could not believe the junk that came out of it. 94,000. I have a '96 saturn sl1. Low fuel pressure will cause the engine to run very leanly, and therefore it may cause the engine to sputter. I noticed that. I have also noticed the same thing driving the car today. Billy from United States 7 years ago BI Comment Same issue here 17 reports Spark plug health, Air Filter clean, Fuel Filter replacement. Car hesitating while driving. It will accelerate past 40, but seems to have trouble. Actually you can probably get your purchase price back very easily w/o reselling.