When the TPS sensor is disconnected from the car in idle, there would be delayed acceleration.
Nothing will happen to the car if you disconnect the knock sensor. It just will not detect a problem if there happens to be one.
Yes. A disconnected vacuum line will cause the engine not to idle at a constant rpm, therefore causing the car to shake.
Either the car wont start or, it will not idle right (its going to fell like its going to turn off).
it controls idling of car engine, without it it will not idle..
Check the MAFS (mass airflow sensor) It's the silver-ish thing located right after the airbox (in front of the battery). If something is clogging it or if it somehow became disconnected or damaged, the car won't idle. On top of that, the car should not run well with a damaged MAFS at all, but, the most trouble will definetly be at idle. ~PorkPoney
maf sensor or idle air control/ecm. force-clean fuel injectors and reset engine timing and base idle
Bad o2 or maf sensor
start the car and let it idle while the car is running unplug the mass airflow sensor if the idle does not change then the sensor is probably bad if the idle does change or the engine dies out then it is working so leave it alone cause they arent cheap. A Chrysler Cirrus does not use a maf.
A failing throttle position sensor will cause idling problems when the car is warm. The failing sensor can also cause the car to stall when idling.
When driving the IAC does not do anything because the car is not at an idle
Not normally. Usually it willl cause a high idle and lean condition. Your car needs more fuel to run rich... i.e. MAF Sensor or O2 sensor causing out of whack Fuel trims.
Idle speed is automaticaly controlled by the computer. If idle speed is not correct, the car has a vacuum leak or a sensor problem.