Hello to anybody who can help me…
I have a 2005 Kia Spectra with about 160000 km on it. It has been running fine for most of its life, but last year a stalling issue and erratic, runaway idle (along with an OBD code) led me to replace the throttle position sensor. All was well, no more stalls, and it was a relief to have the car drive “properly” again without the engine spontaneously hitting 3000 rpm at idle.
Now another issue: when the throttle is barely pressed (like the bottom 15 percent of the throttle) the engine seems to sputter and the car lurches rapidly, almost like a slipping clutch. Once I press the pedal further, the car revs smoothly. Even weirder: if I pump the accelerator to the floor, either before starting the engine or a quick pump in neutral, the issue temporarily goes away. It seems like when the pedal traverses it’s full range of motion before use, the problem doesn’t occur afterward for some time.
Just recently the stuttering issue manifested during highway driving, again, only when the accelerator is in the bottom portion of the throttle.
I’m not getting any codes or MIL, so I don’t even know where to begin. Any advice would be helpful!