* Fouled spark plugs * Bad wires
* Burnt nodes in your distributor cap
* Carbon deposits on your rotor
* Bad coil
* Clogged injector (if you have em)
* Perhaps a vacuum hose. Check you PCV hose for cracks
Go to "Auto Zone" and have them diagnose your car with the handheld computer. They can help you immensely.
When the TPS sensor is disconnected from the car in idle, there would be delayed acceleration.
What causes a car to idle good and run rough when you give it gas?
The car will act like it has a power loss during acceleration. It may also miss from time to time. It may also not want to idle and can die during idle.
The car will idle rough and hesitate during acceleration.
miss alignment of tires
Unlikely. A faulty IAC will give you poor, erratic idle speed.
That is about your average idle RPM. It depends on what car you have and the age of your car. If it bothers you, i'd recommend going to a place that fixes cars.
take it to a garage there may be something wrong with the fuel delivery system.
Timing belt. misfiring engine
might have misaligned or loose wheels
only when it is on, it causes slow acceleration
Misfire is usually caused by faulty wires or spark plugs or both. Throttle position sensor failure generally causes poor response to the throttle. That is poor acceleration, slow to return to idle and rough idle.