Idle increasing
After my car warms up, the idle will increase up to about 1500RPM. if I turn the car off and push the gas petal a couple times, she's back to normal for a bit, but after some driving she does it again. anyone have any clues as what is causing this? I'm not getting any check engine lights either.
It's a 1999 Trans Am, non WS6. the engine light hasn't come on (yet).
I'm pretty sure it's cable but I could be wrong.

