Accelerator Position Switch May Fail and Cause Sluggish Acceleration on Kia Amanti

The accelerator position switch may fail intermittently resulting in sluggish acceleration or lack of power.

RepairPal Verified
Average mileage: 91,219 (11,200–288,000)
Engine affected: 3.5L V6
5 model years affected: 2004, 2005, 2006, 2007, more2009
52 people reported this problem
36 people shared problem details
2006 Kia Amanti- 3.5L V6
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.
7 people like thisFlag inappropiate
2004 Kia Amanti- 3.5L V661,000
car would not accelerate it would just get stuck at about 2000 RPMS
5 people like thisFlag inappropiate
2004 Kia Amanti- 3.5L V6120,000
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.
3 people like thisFlag inappropiate
2005 Kia Amanti- 3.5L V6117,000
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.
3 people like thisFlag inappropiate
2005 Kia Amanti- 3.5L V6112,043
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.
2 people like thisFlag inappropiate
2005 Kia Amanti- 3.5L V661,000
"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.
2 people like thisFlag inappropiate
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.
1 person likes thisFlag inappropiate
2005 Kia Amanti- 3.5L V680,000
sluggish, sometimes cuts off. no rpm movement
1 person likes thisFlag inappropiate
2006 Kia Amanti- 3.5L V6102,000
I had this problem with this accelerator pump sending unit, the car wouldn't start and only when I was lucky, was stranded many of times due to this problem. I spent lots of money. Only to find out the KIa dealer could Not guarantee their own work. Nor figure out this problem. Crazy we had No alternative but to except the Substantial loss of our Favorite Car (2006 Kia Amanti).. sicilianphil@gmail.com
2007 Kia Amanti- 3.5L V6110,000
The car is giving me problems of acceleration and at time would turn on but shut off right away. Taking off was the major problem as the car has a though time picking up speed, in addition, it does not get up to proper highway speeds.
2005 Kia Amanti- 3.5L V6
Car just at complete random will lose power not want to rev up or go very slow idle and sometimes dies when its not acting up it runs good but how do you know when you fixed it because it's a random issue I will never own another
2005 Kia Amanti- 3.5L V6
I have had the same problem as the others and have forked over thousands of dollars in repairs. KIA kept telling me it was one thing and charging me to fix it, only to have the same problem occur. They play ignorant when I addresses others experiencing the same. Took my money and could really care less. This is a dangerous problem that can result in a serious accident and all they care about is getting their money. I will never purchase a KIA product again. Unfortunately, since I have poured so much money into the car I am stuck with it until I can save enough to to purchase a new one. One tip, disconnect the battery and re-connect and I am able to drive 50 miles or so. Though, when the temperatures rise this happens more often. ADVICE TO OTHERS NEVER BUY A KIA!
2005 Kia Amanti- 3.5L V6
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.
2005 Kia Amanti- 3.5L V630,000
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
2004 Kia Amanti- 3.5L V6100,000
Isn't accelerate ,not power
2006 Kia Amanti- 3.5L V632,000
I reported the problem to kia corporation. And I reported it to my insurance company, state farm.
2004 Kia Amanti- 3.5L V690,780
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.
2005 Kia Amanti- 3.5L V6161,100
Loss of power in automatic drive mode. Sluggish acceleration in 5 speed mode. Car will not accelerate over 45 mph.
2006 Kia Amanti- 3.5L V662,432
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.
2005 Kia Amanti- 3.5L V6106,000
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
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