I have an 06 optima (06.5/ ms) 2.4 engine but the problem im having juging from kia internet forums is spread acros meney years and models it is an intermitant engine stall it can happen at any time ive had it happen at 65mph on interstate this is followed by a series of start stall then it will run fine for a while ive had a complete wire harness check reaced several sensors and other parts nothing has cured the problem it should be recalled and repaired by kia before some one gets hurt not after.this is a totally random happening
2006 Kia Optima engine problems
16 complaints (10% of all complaints for this car). Typical mileage when it fails: 61,787.
- owner complaints
- 16
- of this car's complaints
- 10%
- typical mileage
- 61,787
- crashes
- 0
- recalls
- 0
Which part fails
- Engine: gasoline: belts and associated pulleys3
- Engine2
At what mileage
Complaints by mileage at the time of the problem.
Kia Optima engine problems in other years
Specific symptoms reported on the 2006 Kia Optima engine
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
Related investigations
Loss of Motive Power
the federal safety agency received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are susceptible to cracking. The petition itself can be reviewed at under ODI number 11481745. On September 12, 2022, the Office of Defects Investigation (ODI) opened Defect Petition (DP22-003) to evaluate the Petitionersâ request. The Petitioners have provided additional complaints within four supplemental letters dated January 31, 2023, March 21, 2023, May 23, 2023, and August 4, 2023. ODIâs evaluation included the review and analysis of the complaints and supporting information submitted by the Petitioners, as well as additional complaints submitted directly to the federal safety agency which referenced either the oil drain plug or a crack in the oil pan. After reviewing the available data, ODI has not identified evidence that would support opening a defect investigation into the oil drain pan assemblies of the subject vehicles. Based on a review of the available information, a loss of motive power resulting from an oil drain plug back out has not occurred between the initial sale of a vehicle and the completion of its first oil change. If during an oil change service, a technician fails to remove the existing drain plug gasket before installing a new gasket, it is likely that a proper seal between the drain plug and the oil pan will not be made. An improper seal between the drain plug and oil pan could lead to the backing out on the drain plug, resulting in the sudden loss of oil while driving. Additionally, the provided examples of oil pan cracks were localized to the immediate vicinity of the oil drain plug and/or appeared to be the result of direct-contact with a tool during servicing. Â There is no information to support that a vehicle-based defect exists relating to the oil pan assembly, and instead the documented incidents are related to the failure to follow the proper maintenance procedures during oil change service. In October 2023, Hyundai published a Technical Service Bulletin (TSB) that provided detailed instructions for oil change service on its gasoline powered vehicles, specifically highlighting the need to remove and replace the existing drain plug gasket prior to reinstalling the drain plug. After a thorough review of the material submitted by the petitioner, the information already in the federal safety agency's possession, and the potential risks to motor vehicle safety implicated by the petitioners' allegations, the federal safety agency does not believe that a formal investigation is warranted. Therefore, the petition is denied. A Federal Register Notice (FRN) further detailing the federal safety agencyâs reasons for denial of the petition will be published. The reference numbers for the complaints to the federal safety agency cited by the petitioner can be found in the petition submission documents in the public file for DP22-003. To review those complaints and the additional complaints ODI added to its evaluation which are cited in the Closing Resume ODI Report Identification Number document, go to
DP22003
What 2006 Kia Optima owners say
Most recent owner complaints, unedited.
2006 kia optima. Consumer writes in regards to clutch and engine light turn on and off. *ld
"first" time problem happened was july 3, 2016 with my 2006 kia optima. I was sb on hwy i25 in cs, co. Speedometer read 25mph as I was coming off the on-ramp. I accelerated to 40mph into flow of traffic. I felt a lurch & the vehicle automatically accelerated. Speed went from 40mph to about 60 MPH without depressing accelerator. Breaking did not slow it down. I felt car was going out of control. My passenger reached over & turned ignition switch off & on quickly, to decelerate & accelerate. This helped car slow down when key was turned off to the first click & helped maintain an adjusted speed as traffic was in-front & in-back. We kept doing this until car slowed down enough to pull over to right shoulder. Key was completely turned off & car was at a complete stop. Car was towed to mechanics. Diagnostic was performed using engine analyzer. It was road tested multiple times & didn't it duplicate my experience. This happened again sept.10, 2016 as I, again, entered hwy i25 so.I was driving alone. My speedometer was 40 MPH, in heavy hwy traffic. I once again "felt" lurch of car. This time it "stuck" at 40 MPH. It didn't slow down when I braked, it continued at 40 MPH. I continued to brake & speed did slow a bit. My foot was totally down on break when it was still auto accelerating at the hwy exit ramp; now slowed to 26 MPH as I continued holding brake down. Finally speed was down to 23mph as I drove into a parking lot (no cars were moving in & out at the time). I turned the key off completely; my foot was still on the brake & the car came to a lurching haul at that time in the middle of the parking lot. I waited about a minute & then started the engine again with my foot on the brake. I was able to pull into a parking slot. I started it & very slowly drove home, but not on the hwy. I maintained speed of 25-30mph. It was only about 1k between the 2 incidents.
I went to go shopping, and at the second stop sign in my neighborhood I stopped. When I tried to drive the gas pedal when pushed would not let the engine go fast enough to go above 20 MPH, then I noticed that the check engine light was on. I pulled over and checked my engine and its fluids, could not find any thing wrong. So I started the car up again, and everything seemed to work fine. So I drove off and the car worked like it should have. I then went to a auto parts store, and they used their meter to check engine codes. The code was p2135, code definition: throttle pedal/position sensor 'a/b' voltage correlation.
My car stalled while driving then all sudden it stalled, I started again then stalled again. I called the tow truck and towed to the auto repair, my car has a vehicle recalls. The dealerships refused to fixed it the recalls, they told me I have to pay full costs about $5,000 for new engine. They won't fixed the recalls. I found out there was huge complaints against dealerships of kia . I filed a lawsuits against the dealerships for refused to fix my car. 2 recalls air bags/engine. The dealerships don't want to fix the recalls , they force me to pay for huge repairs. I had to pay rental car and towing services.
You can start it up. Drive it for a little bit, but as soon as you make a stop or slow down, it will stall. Changed the oil, all fluids. It still does the same thing. So I am afraid to drive it.
2006 kia optima needed a new timing belt within the next few thousand + miles (needs to be changed every 60,000 miles or sooner), but one the crankshaft pulley just came off and then the belt came off a couple pulleys because of this. The belt actually looks fine, but the pulley failure caused the belt to come off. This belt runs several things so the initial loose pulley caused the car to lose power steering, battery light to turn on, the A/C failed, etc., and then the inner part of the pulley came off and the outer ring (magnetized) fell and stuck to part of the car frame that is actually metal. My wife made it to work while the belt had to still be on but loose, and it now sits in her parking spot at her job (hospital parking ramp). I will probably have it towed tomorrow. This could have easily LED to an extremely dangerous situation if it happened on the highway. I found the outer part of the lower pulley laying above the car frame close to the engine. If the car drove after this, engine damage would be most likely. I will hopefully have it towed to the nearest kia dealership by tomorrow to see if I just need the pulley and belt or if the engine is damaged. This is unbelievable, because I found many people that had the same issue with the crankshaft pulley bolt breaking off and sometimes causing engine damage immediately afterward. As a consumer, I shouldn't have to go under the vehicle and tighten a factory tightened bolt every now and then. I hope that the newer bolts actually hold like a grade 8 american bolt, because that wouldn't fail. Rubber can't break steel, and I can't believe this obvious oversight by kia hasn't been recalled or in a technical service bulletin!!!!
After a recent oil change, the car was running horribly, making a knocking sound. Had an episode where the oil light was flashing on and off and the engine about died, so I had made an appointment for the vehicle to get checked for monday morning. The saturday before, while running errands, had the episode occur again, but this time, the engine locked up and it has been sitting at the dealership every since because although I have a manufacturer warranty, kia won't honor it with all my oil change receipts. I am frustrated, because I know others have had the same issue I have and haven't complained loud enough or whatever, but this is an issue with the engine, not me. No car should blow an engine at 62k. It's ridiculous.
My 2006 kia optima just stopped running yesterday, without any warning, in the middle of a high traffic street. It completely lost power and there was nothing I could do. Since there was no warning (check engine light not on, no stuttering, etc.), I wasn't able to get to the side of the road. The car behind me had to swerve to not hit me. I'm a 67 year old, disabled woman who was stuck on the side of that busy street for a half an hour until my car could be towed. Upon diagnostic testing, a mechanic found that the car needs a crank sensor (as well as an oxygen sensor). As he said, "we replace a lot of these on this model car". After extensive research, online, reading blogs from other kia owners, I've found that several people have had the same problem I've had. A friend of mine had the same problem on his way back from a trip. The sensor just goes out and the car dies right where it is, and even if it can be started again, it will only run for a short amount of time and dies again. This is a very scary problem. And very expensive also. If kia knows that this is a common problem, why isn't there a recall?
Tl*the contact owns a 2006 kia optima. The contact stated as she was driving at 60 MPH all of the warning lights came on and the vehicle shut off in the middle of the road. The contact tried to drive the vehicle to the side of the road so that it could be towed to the dealer. The dealer would replaced parts on the vehicle but the vehicle would continue to shut off. The crankshaft sensor had to be replaced three times but that was not the cause of the failure. The kia manufacturer was called and stated that they do not cover any parts that are not under the warranty. Vin was unknown. The failure mileage was 2,000. The current mileage was 78,000.
Questions about the 2006 Kia Optima engine
Does the 2006 Kia Optima have engine problems?
Owners have filed 16 complaints about the engine of the 2006 Kia Optima, 10% of all its complaints.
At what mileage do 2006 Kia Optima engine problems start?
The typical (median) mileage in owner complaints is 61,787 miles.
Is there a recall for the 2006 Kia Optima engine?
There is no recall for this problem on this model year.
Other 2006 Kia Optima problems
Airbags 46Locks 27Electrical 23Lights 16Transmission 14Visibility 13Body 12Fuel system 9Acceleration 7Suspension 6Tires 5Seats 4Steering 2Seat belts 1Wheels 1
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