2010 Kia Forte: sudden loss of power

Filed Oct 25, 2025 · Acceleration, Engine · AL

Knocking in engine, loss of power, rod bearings needs replacing

Filed Aug 13, 2024 · Engine, Transmission · TN

Was driving at slow rate of speed <30 MPH, the car started having a really loud knocking sound coming from the engine and then lost all power. Had car towed to local garage and was informed that the rod bearing had been broken and the engine needed to be replaced.

Filed Mar 16, 2021 · Engine · 88,000 miles · IN

My car was bought brand new from kia of clarksville. It has always had a tick I was told it was normal. At 88,000 miles my car locked up. Just driving up a small hill it started knocking loud and lost power. Took it to kia they want 6000.00 to repair it with a junk yard motor. How do they sell faulty engines and get away with it. I took good care of my car and oil changes when due. I'm so upset that as a consumer we have no protection against this.

Filed Dec 18, 2020 · Engine · 180,000 miles · KY

Took care of the car and my motor has recently gone out. Lost power going up hill and had a bad ticking noise I pulled off an exit and it sounded like something broke in the motor. Very disappointed.

Filed Aug 31, 2017 · Fuel system · 55,000 miles · CA

On two occasions now the kia forte has stalled with the original fuel sending unit located in the fuel tank. First occurrence was in september 11 2016 (~55,000 miles) where car was parked for ~30 minutes while shopping and would not start-investigation found the fuel pump connector within the fuel tank got hot enough to melt the plastic and disconnect the positive terminal (see images attached). This is a serious issue and kia dealerships in the chicagoland area would not do any warranty repair or replacement. After repairing the connection and re-socketing the terminals the pump was able to work for another year until the second incident. On august 29 2017 (~75,000 miles) the very same connector again within the assembly for the fuel sending unit failed while in motion on a residential road causing the engine to stall which in turn caused loss of power steering. Again, the connector for providing power to the fuel pump opened causing the engine to be starved of fuel. The unit is no longer repairable as the open circuit is occurring within the right-angle pass through the metal divider of the internal portion of the fuel tank. The entire unit required replacement even though all other elements on the assembly are working. Other owners have reported this exact issue however the manufacturer refuses to acknowledge the possibility of a recall. This is an obvious safety mechanism issue and could cause accidents due to abrupt loss of steering, ability to accelerate, and fire hazard.

Filed Aug 24, 2015 · Electrical, Fuel system · 60,000 miles · FL

Tl* the contact owns a 2010 kia forte. The contact stated that while refueling, fuel would spew back out of the filler neck without warning. The contact also mentioned that there was an internal electrical malfunction which caused a loss of power from the battery. The vehicle was taken to the dealer, who replaced the canister purge valve and the battery. However, the failure recurred. The vehicle was taken back to the dealer for further inspection and diagnosis. The manufacturer was notified of the failure. The approximate failure mileage was 60,000.

Filed Jun 18, 2014 · Acceleration, Electrical · 70,000 miles · MD

I was driving through a reduced speed zone of 35 MPH and went to set my cruise control, about 3-5 seconds later I felt the car go dead. I lost power steering and all electrical systems. My indicator lights were on and flickering and I had no control over the vehicle other than waning off to the side of the road to get out of the way of traffic. Once my car came to a stop I proceeded to turn off the ignition. I tried starting it and the engine turned a couple of times but went dead so I turned it off. I tried one more time to start the ignition and was only barely able to get the engine to start and maintain. I went off on my way and later on my way home I stopped to get food and when I got back in my car I tried starting it and it struggled to start. I have only had my car for 1.5 years and only in the past couple months experienced problems with my cruise control not activating and setting to my current speed.

Filed Oct 28, 2013 · Engine, Fuel system · 47,100 miles · UT

Our 2010 kia forte ex lost 90% of power repeatedly (rpms drop to idle, regardless of throttle position) at speeds from 0-35mph. This is not the first occurrence, but I think it is the same problem. This is very dangerous if you are making a left turn and you lose acceleration, you can be in the way of oncoming traffic by losing power. About 2 years ago (25,000 miles or so) the tps (throttle position sensor) went out. Kia could not diagnose it until it threw a code (lame). Now we get the same issue, the vehicle is stalling, or "stumbling" when the speed should be constant or accelerating, but there is no engine code for the code reader to pickup yet, so the mechanics can't figure out what to do. Apparently this is a problem on many models of kia/hyundai and the mechanics don't recognize it so they can't fix it, and you are stuck with a dangerous condition. I think there should be a recall of these faulty tps sensors. Kia/hyundai should at least issue a safety tsb (technical service bulletin) to clue in their mechanics as to what the problem is. Here's a great article showing the problem: http://www.kia-forums.com/kia-carnival-sedona-2006/80251-tps-sensor-symptoms-tps-failure-cel.html thanks for your attention to this matter.