The accelerator position switch may fail intermittently resulting in sluggish acceleration or lack of power.
Car Problem Reports
Kia Amanti Accelerator Position Switch May Fail and Cause Sluggish Acceleration
Kia Amanti Problem
Engine Affected: 3.5L V6
Average Mileage: 87,763 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.
sluggish, sometimes cuts off. no rpm movement
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, 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.
Visitor, 2005 Kia Amanti, 3.5L V6, 90,000 mi
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, 2007 Kia Amanti, 86,000 mi
Our 2007 Kia Amanti just started having this problem 2 months ago. We had a diagnostic done as our "check engine" light was on and it was diagnosed as the accelerator position switch. Because it was a Sunday morning and we were hundreds of miles from home they cleaned some things and said we would probably be OK to get home. We did and were fine until yesterday. The switch has to be replaced. We understand that Kia came out with a new part and there was an advisory out about it. Not a warranty item of course! Never is, right? Be prepared to spend about $300 or more to get this fixed, but you need to do it. It will keep happening otherwise.
Visitor, 2004 Kia Amanti, 3.5L V6, 60,000 mi
I haven't had it fixed
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.
Visitor, 2004 Kia Amanti, 3.5L V6, 78,670 mi
I was coming back to my Mom's when the check engine light came on. Had it checked this morning and they said it was the idle vadidation switch/sensor and so it is costing me 276.47 for the part, 45.00 labor and 90.00 to tell me what was wrong.
Visitor, 2006 Kia Amanti, 3.5L V6, 20,000 mi
The sluggish acceleration in my Amanti 2006 has occurred since I own the car, which I purchased with 12k miles on it. At times, not predictably, the car fails to accelerate when pressing the gas pedal, then it suddenly takes off with jerk. Cannot reproduce at the dealership and they do not admit of ever hearing of such an issue.