2011 Kia Optima acceleration problems

Filed Jul 13, 2026 · Acceleration, Airbags · OH

About six months ago, I lost the heated steering wheel functionality in my steering wheel, then from there, I slowly lost functionality like cruise control, and the most recent now my airbag and horn do not work. If you press on the horn, it is silent, and the airbag light has been illuminated consistently for the last couple of months. I had this issue diagnosed and it came up with the codes of B1346. And B1481. After some research, these issues are the result of a bad clock, spring and cause the airbag and horn not to work. Additionally, this issue is known to this model the 2011 Kia Optima, and has been recalled in most production cases of this vehicle, but my vehicle is not included. I received a quote for $876 from a dealership to get this corrected, but it should be included in the recall.

Filed Jan 6, 2025 · Acceleration, Electrical · MI

Hydraulic Electronic Control Unit (HECU) experienced an electrical short circuit and engine hardly running.

Filed Dec 17, 2022 · Acceleration, Engine · VA

As I would drive the vehicle a rattling noise would occur when every time I accelerate from stopping at a traffic light. Then the engine light appeared on the dash board. When I went to have the engine light checked the results came back about an oil gasket. I then got an oil change soon after. The rattling noise and the same acceleration problem still occurred. Soon after it gotten worst to the point couldn’t go faster then 10 mph and then the car kept shutting off.

Filed Nov 27, 2021 · Acceleration, Engine · FL

On NOV. 26TH 2021, I was driving my car and upon trying to accelorate, my car felt as if it was about to stall out. I pressed the gas and I barely moved. My engine light went on immediately and it's constantly flashing now. The cars RPM's do not go past 1-1/2 RPM's. I can not pick up speed like before, like I should. My car now hesitates and I'm scared to drive it. I feel that it's dangerous cause I can not keep up with traffic. I found a RECALL letter that I have from July 12, 2017 in which I took it to the dealer at that time I received it. I alo found 2 other recall letters ( see pics ataached). I guess at that time when they checked it nothing was wrong BUT now I am having an issue and I feel it could be related. The recall number is: 17V224 follow up letter of one of the recalls. The recalls prior to that does not have a # on it: it states: ENGINE CONNECTING ROD on of the recalls. I'm hearing some knocking but it just happened and I havent driven it since Nov. 26th. a.m.The code that comes up as P1362, knocking sensor and can be a number of other things. And everything I read says the KNOCK sensor detects vibrations indicating an onset of excessive connecting rod bearing wear. and can severly damage the engine. I'm very concerned and I feel that this recall back in 2017 is now happening to my car. I have uploaded the recall I have in my possession. According to William Garcia( Billy ) the service guy I always usually worked with at Gunther Kia, all of my recalls were checked and soem weere fixed. These particualr ones he said were done and or checked but nothing was repaired as you'll see in my history of service on recalls with them.

Filed Sep 19, 2020 · Acceleration, Electrical · 95,000 miles · AR

My car loses power when I use the horn. It happens while parked with the engine on and in traffic. Initially, I thought it was faulty electrical problem because there were 3 active recalls needing to be fixed. I recently took my vehicle to a certified kia service center to get the recalls taken care of and additonally, had the A/C compressor, struts, and a belt replaced. I also described the issue of engine power loss when I use the horn with service tech and attempted to demonstrate. However, my car didn't duplicate the issue. I'm not sure if the techs tested it thoroughly during the days it was being serviced. The final detailed bill states that the car wouldn't duplicate the issue. I'm currently satisfied with the fixed recalls, A/C, belt, and other minor repairs. I'm highly concerned and frustrated that I'm still experiencing engine, acceleration, RPM, and A/C failure whenever I need to use my horn. A couple of days ago while in traffic, I had to blow the horn because a distracted driver nearly side swiped me. As a result, my car loss power. I couldn't accelerate and the transmission wouldn't shift. I ended up doing around 30mph until I made it to a safe destination. I called for help, but after I turned the car off and back on, it was as if it never happened. I'm furious about it because the distracted driver proceeded to tailgate and intimidate me out of anger. Lastly, it was not professional or caring to be laughed at when I voiced this problem at the service center. I need help and answers before something more terrible happens. The number of engine and electrical complaints are startling. I'm hoping that my issue will be taken seriously and looked into. I'm not comfortable driving my car.

Filed Jul 4, 2020 · Acceleration, Suspension · 81,000 miles · CA

The kia optima 2011 motor no longer works and smoke keeps coming out when it's on and turned off after driving from the exhaust on the drivers side. The accelerator pedal gets stuck and doesn't seem to want to make the change in transmission. I took the car to two different mechanics and both of them come out with the same diagnose. Was told that the car is a recalled car because it is to soon for the motor to be shutting down since it only has 81,000 miles and it's not an old car. The suspension is also not in properly.

Filed May 29, 2020 · Acceleration, Brakes · 130,600 miles · GA · crash

Kia optima 2011 took a turn for the worst on july 2 2018, my kia optima caused me to plummet into traffic after my brake didn't perform l. That's car had been taken to kia for all service need and car still perform poorly. Have to restart my car multiple time just for it to act right. Car stops one me in the middle of the street one day. I have a 3 old and that day she could have been with me. I lost my license and my money I invested for a safe car for me and my child.

Filed Aug 1, 2019 · Acceleration, Engine · 93,477 miles · PA

Driving on interstate, out of nowhere engine light started flashing and engine seized, car lost all momentum, had no "get up and go" pushing on the gas pedal did nothing, going up hill was almost impossible. Took car to local auto shop, they could hear some noise but weren't sure what. Per invoice 7/26/19: checked codes: p0011 a camshaft position timing over advanced, p00114 b camshaft position timing over advanced; p1326 engine damage alert for driver. Engine was noisey and ran very rough, oil level was low and black (we saw nowhere that it was leaking oil, no spots anywhere). Changed oil and add lucas engine stabilizer, engine quieted and runs much smoother. Clear codes, test drive, watch scan data. No codes, possible early stages of engine damage if codes return inspect timing chain and control devices. Took car home over the weekend drove less than 50 miles, sunday 7/28/19 again, engine light came on and car had no "get up and go" and a very loud clanking noise could be heard. Took car to shop asap. Per invoice 7/31/19: check cel light and loss of power, check fluids, engine has internal noise/damage; computer datascan, check codes, diag, p1326; engine damage alert for driver, recommend further diag eval, inspect lower end and timing chain. Auto shop contacted local kia dealership, was told they warrant engines with these conditions. They have a number of vehicles waiting to be repaired already, suggested calling a dealer out of town for repairs.

Filed Oct 18, 2018 · Acceleration, Engine · 111,000 miles · TX

Vehicle will not start. Engine and ignition replaced due to bearing wear recall. Transmission replaced 2 weeks ago for rebuilt one, and now car won't start. It's been 2 days and kia has not been able to tell me what is wrong with it. The reason I wanted to submit this complaint is because I believe there should be a recall on transmissions installed in these vehicles. Kia wanted me to wait from 10 sep to mid dec because these transmissions are on back order. Which means there's so much demand that dec is the earliest they could receive it. Their shop is full, mostly of these cars (optima). They expected me to wait 3 months without a car in order to give them time. It just boggles my mind that they could do this. The craziest thing is that expect everyone to wait this long. I talked to 3 different costumers who are all having the same exact problem with the same cars, and they were told the same thing. I purchased this vehicle in 2014 used, only one previous owner, never had any accidents, now has 111,000+ miles. Always did all maintenance checks, oil & filter changes, tune ups, fluids change and yearly inspections. Only used for going to work and coming home 5 days a week (approx. 54 miles per day). I decided to repair transmission at other place & ended up saving $1100. Kia wanted to charge $2,700 for rebuild transmission & found a guy that charged me $1,600 for rebuild one. Kia never gave me quote copy. Just told me over the phone. How convenient! Guy told me the way these transmissions were built it's simply bad engineering. And showed me the part of the transmission that broke. Would upload the documents , but I left in my car! Can still provide them though! The safety issue was that the transmission went out while driving at 65 MPH on a busy highway in houston! The car simply died on the middle of the highway. So I can only assume you know what that feels like!

Filed Jun 25, 2017 · Acceleration, Engine · 93,300 miles · IL

We were driving on a slightly curvy and hilly road where the speed limit was around 45 and the car lost all RPM and the oil pressure light and check engine light started flickering, there was a notable engine knocking heard during this time. We pulled over at that time.