A high idle in your 2001 Toyota Tacoma 4x4 could be caused by several factors, including a vacuum leak, a malfunctioning idle air control valve (IAC), or issues with the throttle body. Additionally, problems with the mass airflow sensor (MAF) or a dirty air filter can also lead to irregular idle speeds. It's recommended to inspect these components and perform a diagnostic check to identify the specific cause.
a/c kicks on
It is nonadjustable. It is controlled by the computer.
maybe the clutch
On a 2001 Toyota Tacoma with a 3.4-liter engine, the idle air control valve (IAC) is located on the throttle body. It is typically mounted on the side of the throttle body assembly and has an electrical connector and a couple of bolts securing it. To access it, you may need to remove the air intake duct and other components for better visibility and access. Always consult your vehicle's service manual for specific instructions and diagrams.
Trouble code P0505 means: Idle Air Control System
If the idle is set too high, and you have an automatic transmission, this will happen. A sticking throttle cable or rod can also do this.
clean or replace your idle air control valve.
High Idle.
check your idle intake valve for proper operation, to check means you would consult the test procedure in a published repair manual from either the manufacturer or auto repair store (haynes or chilton). hope this gets the tacoma running!
You don't. If the idle is not within factory spec there is a problem that needs to be diagnosed, such as the idle speed control unit for example.
To adjust the idle on a 1999 Toyota Tacoma, first make sure the engine is at operating temperature. Locate the idle air control (IAC) valve, which is usually near the throttle body. You can adjust the idle speed by turning the screw on the throttle body slightly; however, it's important to do this in small increments and check the idle after each adjustment. If you're unsure, consult the vehicle's service manual or a professional for guidance.
buy a toyota !! Problem solved