Where is the idle control valve?
intake manifold
Locating the Idle Air Control Valve The IACV is usually located on the intake manifold near the back of the throttle body. Before starting the cleaning process, be sure the vehicle is not running and that the engine is cool.
How do you adjust the idle speed on a Vauxhall Corsa?
You can’t adjust the idle on the Corsa, its controlled by the ECU. Provided you fitted it with the rubber o-ring and there are no air leaks then its ok. Its more likely to be your lambda sensor at fault or possible the CTS (Coolant Temperature Sensor).
What is the idle air control system?
The idle air control (IAC) valve is located on the throttle body of fuel-injected engines, where it works with the vehicle’s ECU to electrically regulate airflow to the engine to ensure smooth idling.
Where is the idle speed adjustment screw located?
15 On early models the idle speed adjustment screw is located on the rear of the throttle housing, but access is severely limited unless the heater plenum chamber top cover is removed as described in Chapter 4, Part B (see illustration).
How to remove Idle Stop cap from a GM TBI?
On a factory TBI unit the idle set screw will be capped from the factory so you cannot mess with it. But you just knew one day you would. Not all caps look like the one pictured but this is the one that is hardest to remove. The easiest way is to first grind the cap flush with the surface of the throttle body.
How can I tell if my idle control valve is working?
To check if an idle control valve is working properly, start by turning on your engine and letting it run for a minute or 2. Then, when it’s at an idling speed, take note of the RPMs in your car. Next, turn the engine off and disconnect the idle control motor under your hood.
What should the idle speed be on a GM TBI?
The exact setting is on the emissions label on the radiator shroud, but in general, the idle speed should be about 500 RPM in Drive, 700 in Park / Neutral, or if you have a manual transmission, somewhere between 600-800 RPM.