Camry 2012+ :: 2014.5 LE Hesitate When Accelerating Then Jerks


Dec 18, 2015

I bought New Camry 2014.5 LE. Most of time, my wife drives for short commutes to train stations and work. Its been 1.5 year and it still has less than $10K miles.

I feel it hesitates when I push the accelerator all the way quickly, then jerks. The engine revs up the moment I step on the accelerator but it hesitates before it actually picks up speed. If I step on the gas gradually, its fine.

I have Rav4 (4 Cyc) which does not behave this way.

I took the dealership and asked about it. The tech says it is drive by wire system so unlike old cars, which respond very quickly, may hesitate and considered normal. Some online article says the car's software learns a driving habit so it depends on the driver too but many other postings also suggest its a software glitch.

Is it really normal, a feature of 6 speed or is there a technical service bulletin addressing this issue so that I can show to the tech? Eco mode is turned off.

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Chevrolet - Uplander :: 3.9 Hesitate When Accelerating

In the morning, when i go to pick up my news paper at local convenience store, the van is running rough and hesitate when accelerating.When i take the van 1 hous later, it will run smoothly and there will be no hesitation and i will be good for the rest of the day.

If i skip the trip to convenience store and the first thing in the morning i do a long trip, let's say 2 hours trip, the van will run rough all the way during those 2 hours.

When the van is running rough it will stay in this state until it's turned off, wait and restarted again.

When the van is running smoothly, it will stay in this state until next morning.

While driving, it never happened that the smooth running engine became running rough and the opposite is also true. It never hapenned while driving that the rough running engine became smooth.

I suspect that at engine start up, a parameter is stored and kept in memory until the car is turned off, wait and restarted again.

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It is a Ford Certified Pre Owned and we took delivery with about 30,000 miles on the odometer.

From the test drive in June 2014 until today the truck has had two distinct issues with the rear end and suspension:

1. After coming to a normal stop (at a light) when you start to accelerate (on green) there is a distinct thunk that is heard and felt. Having owned other vehicles with a slip yoke drive shaft I knew right away that the slip yoke needed to be cleaned and lubricated and that is how the dealer repaired this issue. The repair lasted about 10,000 miles and the thunk started again recently.

2. Also after coming to a normal stop and then accelerating there is a vibration felt until the mass of the truck is moving along at about 20 MPH. It's not a vibration like a wheel/tire is out of balance it's more like the whole vehicle is shaking similar to the Space Shuttle Experience ride at the Kennedy Space Center. The shudder is severe enough that my elderly neighbors asked if the truck "was going to make it without falling apart" when my wife and I took them to dinner one evening. The Shudder is exponentially worse when towing any kind of trailer. I have a tandem axle car hauler to haul a 1992 Jeep YJ to various events and the whole setup might weigh 5000 LBS max which is well under the tow capacity of the truck. To say the shaking is violent is putting it lightly.

When I took it in for service, the dealer told me that it was my fault for riding around with the locking differential locked. I told them nice try and that I know what a locking diff is and how to use it because I have two of them in my Jeep. I then took the service advisor for a ride, made him verify the diff is off and demonstrated the problem without even leaving the parking lot. At that point he acknowledged the condition I left the vehicle with him again. The repair the dealer made was to change the rear differential fluid and called me to say the truck was ready.

I drove back to the dealer again (35 minutes in light traffic) where I was presented with the vehicle. I didn't have to leave the lot before I knew it still was not fixed and pulled back into the service lane. I was greeted by the advisor who then proceeded to tell me it was "characteristic of the vehicle." I was completely frustrated and took my truck with it's "characteristic" shudder home.

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So I drive it in to work this morning. (1 hour drive each way) and aside from the minor hesitation/bucking/jerking while accelerating, everything went pretty smooth so long as I had the car up to highway speeds. So I get off from work and start driving home. The problem seemed to have disappeared completely for the first 3 or 4 miles, then all of a sudden it started up again. Only this time it had gotten much worse.

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