My Car is a 2013 Hyundai elantra automatic 89,000 miles... When I start my car is it normal for the rpms to drop to 1,000 b4 its warmed up?? When I drive it the rpms jump to 1800 to 2000 at a low speed when accelerating then stay steady between 1000 and 2000 when driving a constant speed
Has it always done that? If so, it's likely normal. Doesn't sound far off to me.
It either sounds like a transmission issue or a throttle issue as @doc mentioned. Maybe give the throttle body a cleaning and inspect the wiring. How does the car idle in park?
It idles at 1000 no jumping or jerking
@bcarter0819
When was the last time the transmission fluid was changed? Is it a CVT?
If your rpm is not responding immediately to your accelerator pedal and seems to be finding its own way, I would suspect the TPS is not functioning properly.