Would an idle control valve cause a car not to accelerate?

flood<<, WHAT DOES THIS MEAN? (PUSH PEDAL)? TELL HOW ENGINE STARTa AND RUNS HOT AND COLD IDLE
IF THAT IS GOOD. hot and cold or fails cold only ,not told.

HOW DOES TRUCK DRIVE? NOT TOLD.
NO ENGINE TOLD, (DIESEL?) OR PETROL(GAS)>?>?>>?>>
MY GUESS IS IDLE IS STUCK AT 2500 AND THAT IS CAUSED ON GAS ENGINES BY BAD IAC valve or on newer cars./trucks the TBW is stuck.
no engine told or country told year yes 2003.
try to learn that PCM controls are not the same all over earth.'
at all, they car controlled by your countries smog laws. and by year
and evolves fast here, USA.
ID say TB is failing (gummed up) to close fully foot off throttkle
or IAC valve is gummed up, idle air control valve.
or vacuum leaks.
if a diesel ignore all above.

1. Worn clutch: If the clutch is worn, it may not be disengaging properly when you change gears, causing the engine to continue to rev as if you were still accelerating. This can also cause difficulty shifting gears or a slipping feeling when accelerating.
2. Dirty or faulty throttle body: The throttle body controls the amount of air entering the engine and adjusts the idle speed. If it's dirty or faulty, it may not be closing properly after you release the accelerator pedal, causing the engine to continue to rev.
3. Vacuum leak: A vacuum leak can cause the engine to rev excessively or idle roughly. The leak can be caused by a cracked or disconnected vacuum hose, or a malfunctioning intake manifold gasket.
4. Faulty idle air control valve: The idle air control valve regulates the engine's idle speed. If it's faulty, it may not be closing properly after you release the accelerator pedal, causing the engine to continue to rev.

If you can keep giving it gas and it runs above idle with no problem, then you have a blocked or bad idle control valve on the throttle body assembly. With your foot off the gas pedal, the large throttle plate inside the throttle assembly is closed, but some air is let in through the idle control valve or motor through a separate passage. This can get clogged with deposits over time and poor idle results. The valve is controlled by the engine computer. It is how the computer controls idle speed- more air if the idle control valve is opened wider, higher idle speed.

"...like its not getting any gas..." Oh yeah, it's getting gas, the injectors are still pumping gas into the cylinders, but it may not be getting any air. All the accelerator pedal does is control the air supply into the engine through the throttle body. So modern cars have an air pedal, not a gas pedal. Then the computer takes over and matches the correct amount of gas through the injectors to the known supply of air in the intake manifold. Neat system, eh? Sorry if I sound so pedantic, dale. check your idle control valve.

check for a cracked manifold or cracked flex section at the manifold
it is under load so it is not a vacuum leak as the vacuum is low under acceleration and high under deceleration or idle
indicates a gas leak or possible blockage from failed cat converter

Accelerator pedal position sensor needs testing.

You in the ball park. I would also check the idle control valve. Also, if you have not done so, check and/or change your fuel filter. GL.

the gas pedal has a sensor on it that control the throtle body. there is no more cables

Check the help links related to this problem.Click the link below to go through its troubleshooting procedure :-----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html---------
Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html
-------Complete loss of brake pedal then all gets normal? http://repairhelpcenter.blogspot.com/2012/01/complete-loss-of-brake-pedal-then-all.html
------Car dies when gas pedal is pressed? http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html
--------Pushing on the gas pedal, but the car slows down? Gas pedal to the floor and the car slows down?

http://technoanswers.blogspot.in/2012/02/pushing-on-gas-pedal-but-car-slows-down.html

---------

After replacing brake rotors and pads, brake pedal remains on floor? http://technoanswers.blogspot.in/2012/02/after-replacing-brake-rotors-and-pads.html

---------

accelerator pedal sensor? http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

-------

For rough idle issues and problem troubleshooting,go through the help links provided below :----- van idles rough?

http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html

---------
will not idle when cold?

http://technoanswers.blogspot.in/2012/02/ford-explorer-40-will-not-idle-when.html

----------
runs lean and idles rough?

http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html

-----------
Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

------------
Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

----------
Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

---------
Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

----------
Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

------------
Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

This will help.

Thanks.

You probably have a bad Idle Air Control Valve (IACV). In fuel injected carburetors when the throttle valve is closed the IACV opens and closes to control the idle speed. If it malfunctions the engine may rev up allowing the car if in gear to accelerate on its own . When I had a bad IACV in my Mitsubishi Lancer it would drive down the road at 50 mph with out touching the gas pedal. Fortunately, it could be slowed down by using the brakes (unlike the Toyota stories).

Have the idle bypass valve checked, also called idle air control valve.
If that valve is stuck in the closed position, it's not allowing the fuel to bypass the throttle plate to keep it idling, resulting in stalling, but will keep engine running if the pedal is pushed down.