Try cleaning the MAP sensor wire with MAP sensor cleaning spray (yes, there is such a thing-try Autozone). The sensor is located near the intake of the air filter and is a thin wire (be careful!). You will most likely have to take off the top half of the air filter box to get to the sensor. Be sure to disconnect any wire connections prior to removal. One of those connections should be the MAP sensor. After cleaning with the spray, put everything back in place and hook up wire connectors. Start car and see if that corrects problem. A dirty/contaminated MAP sensor will definitely affect your cars idle speed and smoothness of acceleration. Good Luck!
The 2001 Toyota Sienna OBD 2 port is on lower edge of dash; mounted on a bracket above accelerator pedal
The 2002 Toyota Sienna OBD 2 port is on lower edge of dash; mounted on a bracket above accelerator pedal
The OBD-II connector on a 2004 Toyota Sienna is located beneath the dashboard on the driver's side. It can typically be found near the steering column, just above the brake pedal. Look for a rectangular connector that is often covered by a plastic panel or flap.
Most likely its the throttle cable, if not I would check the linkage between the gas pedal and the throttle body.
On a diesel, the TPS or APPS (accel pedal position sensor) is part of the accelerator pedal.On a Hemi, the TPS is a non-servicable part of the throttle body. The APPS is still part of the pedal.On a diesel, the TPS or APPS (accel pedal position sensor) is part of the accelerator pedal.On a Hemi, the TPS is a non-servicable part of the throttle body. The APPS is still part of the pedal.
it needs to be reset by computer Turn off power. Press accel pedal to floor. Turn keys two notches. While pressing the accel press brake three times. Depress accel and turn off keys.
To reset the maintenance light on a 2012 Toyota Sienna, start by turning the ignition to the "ON" position without starting the engine. Press the gas pedal three times within five seconds. Turn the ignition off, and then start the engine to ensure the maintenance light is no longer illuminated. If the light remains on, repeat the process.
To reset the TPS (Throttle Position Sensor) light on a Toyota Sienna, first, ensure the vehicle is in the "On" position without starting the engine. Then, press the gas pedal all the way down and hold it for about 10 seconds, or until the light turns off. Release the pedal and turn the ignition off for a few moments before starting the engine to check if the light has reset. If the light remains on, further diagnostics may be necessary to address any underlying issues.
Step firmly on the brake pedal. Pull the shift lever toward you and down.
On a 2004 Toyota Sienna XLT, the OBD-II (On-Board Diagnostics) plug is located underneath the dashboard on the driver's side. Specifically, it can be found near the steering column, just above the brake pedal and close to the fuse box. You may need to adjust your position or use a flashlight to see it clearly.
1998.5-2003 it is on the part under the hood where the throttle cablesd attach. 2004 it is under the driver side battery box 2005-2013 it is part of the accel pedal itself.
I have an 05 Prius and the pedal looks just like any other pedal I have seen on cars.