Could be many reasons. Help us answer that question by giving us the year, make, model and engine info.
Probably a worn or loose belt
with the car running pull the injector harness off of each inj. if it changes the cars idle then you know that inj. is working - if it doesnt change than that inj is bad with the car running pull the injector harness off of each inj. if it changes the cars idle then you know that inj. is working - if it doesnt change than that inj is bad
I would get it checked out by a profesional because that one is a hard one to deal with if it doesnt get done right
When the idle goes rough, you must idle the plugs. Else the car plugs roughly.
Rephrase, Idle air control, idle circuit carburetor or
The car was staying idle.
no .... no way.
If the engine is TOTALLY dead it is not the IAC valve
check your idle control valve located behind the engine
When the TPS sensor is disconnected from the car in idle, there would be delayed acceleration.
Check your idle, your idle might be too low so it is stalling your car.
I let my car idle for 10 minutes.