A very dirty fuel filter could cause that.
do you have a/c switched on when this is happening a/c makes engine idle up and down as it cycles on and off
A car may idle up and down due to "Improper fuel mixture". (The fuel in the car may consist of an un-even balance of air or gas). However, there are a few other ways a car can idle up and down.
I believe its up, which ever one makes it idle faster
The Devil Makes Work for Idle Hands was created in 2000.
Idle slows down to a stall when you stop or slow down when AC is running. How do I adjust idle or is something else wrong?
The Idle Air Control valve located in the throttle body.
Idle speed is computer controlled and is not adjustable.
Hyundai accent idle speed
When you go to work, you should not be idle as it makes people think you're lazy.
It depends on the year. If you can't get the idle down, check for vacuum leaks. That seems to be a primary cause of high idle, especially for the TBI engines.
idle speed controll or tps throttle sensor
To bring the idle down on a Yamaha badger is really easy. All you have to do is adjust the fuel settings on the carburetor.