The accelerator position switch may fail intermittently resulting in sluggish acceleration or lack of power.Google+
Car Problem Reports
Kia Amanti Accelerator Position Switch May Fail and Cause Sluggish Acceleration
Kia Amanti Problem
Engine Affected: 3.5L V6
Average Mileage: 90,824 mi (11,200 mi - 288,000 mi)
Visitor, 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.
Visitor, 2004 Kia Amanti, 3.5L V6, 61,000 mi
car would not accelerate it would just get stuck at about 2000 RPMS
Visitor, 2005 Kia Amanti, 3.5L V6, 117,000 mi
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, 2005 Kia Amanti, 3.5L V6, 112,043 mi
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, 2004 Kia Amanti, 3.5L V6, 120,000 mi
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, 2005 Kia Amanti, 3.5L V6, 61,000 mi
"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.
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.
sluggish, sometimes cuts off. no rpm movement
Visitor, 2005 Kia Amanti, 3.5L V6, 161,100 mi
Loss of power in automatic drive mode. Sluggish acceleration in 5 speed mode. Car will not accelerate over 45 mph.
Visitor, 2006 Kia Amanti, 3.5L V6, 62,432 mi
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.