Kia Amanti Problem Report
Kia Amanti Accelerator Position Switch May Fail and Cause Sluggish Acceleration
The accelerator position switch may fail intermittently resulting in sluggish acceleration or lack of power.
It has never been fixed. Car wont accelerate when the weather is hot over 85 degrees . It has done this for last 3 years. Have had in and out of dealer and they can't get it to do the problem!!! this is an ongoing problem for the last 3 years every summer only on hot days. Last week drove about 22 miles nothing happened drove home after shopping for 1 hour left to come home and took over 1 1/2 hours to go 22 miles car wont accelerate. Stop let sit 15 to 20 minutes then can go again for few miles then it does it over and over again. Drove today 75 miles one way no problem. Let car cool 30 minutes headed home and went about 30 minutes car would not accelerate again died. Let car set for 30 minutes drove again in stop and go traffic and it went about 2o miles happened again and again at least 6 more times before making it home. Quite tired of this worth less car. - Visitor
car would not accelerate it would just get stuck at about 2000 RPMS - Visitor
Same as others. During cold temps, car will idle, accelerate, and generally be dangerous. Sometimes, get stuck at 2000 rpm. Then, pressing the brake will kill engine. Happens during cold weather predictably. Sucks. - Visitor
Throttle Position sensor has low voltage on check engine code. Occurs after engine heats up and about every 3 day. Headed ti the parts store thanks to repair pal. - Visitor
I have an '05 Amanti which I've sent to the dealer, I've replace the Accelerator pedal position sensor, the throttle position sensor but the problem still persists. I did notice recently that the issue becomes worse in warmer weather. Through some research I've noticed that the issue is probably due to faulty wiring in the wiring harness, but the harness is huge...and the dealer wants over a grand for the harness alone. - Visitor
"Check engine" light on. Diagnostics pointed to the acceleration position switch. Replaced at a garage. Kia dealer's estimate was 4X my mechanic's price. - Visitor
I had the same issue happen yesterday that others reported. Pulled out of the driveway and car wouldnt accelerate any faster than 10-15mph/felt like it was going to cut off. I had the car towed to a shop and they stated that it was "short in throttle wiring" and therefore repaired the wiring and "cleaned gunk" from the throttle. My check engine light and airbag light had also been on MONTHS prior to the car dying yesterday. It seems to be working fine now that they've replaced the wiring, but I'm a little nervous after reading the other comments from owners having the same issues! Hope they've fixed whats truly wrong with it. - cmurphy252
sluggish, sometimes cuts off. no rpm movement - truman
My car has done this since I first bought it new. The mechanic at the dealership told me is was how it was designed and there wasn't a fix. - Visitor
At about 40MPH, it wants to chug, until you give it more fuel. Annoying as hell...KIA dealer said it had something to do with over-filling the gas tank, and a charcoal filter? That diagnosis, and supposed fix, ran $900. Off their lot, doing the same thing...mind you, we had not filled the tank since driving away. Dealer wanted more $$ to try to fix; no way, as we had seen the posts about this; they claimed ignorance about an on-going problem. Asked for any consideration regarding our $900 outlay-no way!! Have lived with the problem for 23K miles now; forget KIA service!! And, tho we love the car for everything else, probly won't buy another KIA. By the way, both front window motors went out within two weeks of each other recently. I'll fix those myself, thank you - Visitor
Isn't accelerate ,not power - Visitor
I reported the problem to kia corporation. And I reported it to my insurance company, state farm. - Visitor
Acceleration only works in neutral. When you put in gear, the car just sits there as though it was in neutral. Sometimes if you pump the pedal it will slowly grab and accelerate. Appears to be the Acceleration Position Switch. Autozone Pt #TPS4161. I will get it replaced tomorrow and see if that takes care of it. - Visitor
Loss of power in automatic drive mode. Sluggish acceleration in 5 speed mode. Car will not accelerate over 45 mph. - Visitor
We bough the 2006 amanti new, a short time later when accelerating the car failed to respond, applying more pressure to the accelerator the car shot out like a race car. This has happened numerous times, sometimes nearly causing a accident. I called kia and was told they had never heard of this problem before. I took it to Kia repairman, he called a kia rep. The rep had them clean the lubricant from the accelerator system. I am unaware if they did anything else to the vehicle. Whatever they did worked for awhile, now it's starting again. I am heading back to the repairman today. - Visitor
everything is fine and then it starts bucking and slows down to 2000 rpm .Turn it off ...start runs rough ..keeps dying .Let it set then some times it will run slow until your off interstate.turn off let set for 30 minutes startd again them ran alright.Never know when it is going to happen.Had it to mechanic He doesnt know why it is happening after replacing engine acc. control module......300.00 dollars. Iam going to sell mine. Kia amanti 2004 - Visitor
Same problem. Car will periodically fail to accelerate with pedal nearly touching the floor. - Visitor
Same problem as everyone else. Replaced throttle position sensor problem still persists. - Visitor
Same problem as discussed, almost since I bought the car new. Once or twice a year it seemed as if the car would not shift into gear to move forward. Took it out of gear and back in, normally would correct within a minute or so. Check engine light has been going on and off for over 2 years now. Dealership said it was the gas cap. I take it off and put it back on, light goes off within a couple days. I have experienced sudden RPM surges after stopping this past month, mileage around 85k on the car. - Visitor
Same as everyone else. Rpm needle goes nuts or doesn't move at all, floor the gas pedal, car doesn't move, let up push it down again, then all of a sudden the car takes off in a hurry. Pretty scary crossing an intersection or passing a car on the freeway or trying to get out of the way. This problem is intermittent and there is no warning. Of course they couldn't duplicate the problem so they were at a loss. The shops seem to know nothing about this even though there are 100's of complaints on the internet and a technical service bulletin. Now, I have a check engine light on that indicates a misfire on #3 which of course is in the back of the engine under the upper intake manifold. A pain to get too. The shop I bought the used car from, as a last ditch effort to fix this, did a full tune up 10-12,000 miles ago. Would this be under a tune up warranty? Spark plugs and wires should last much longer than 10-15k miles. I tried to tell them I had read the car needs the Throttle Positioning Sensor replaced and an update to the computer. They wouldn't listen to me, acted like I was an ignorant woman. Grrr....I have done my homework!!!! Why do they refuse to acknowledge this is a problem?? - Visitor
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