To adjust the base idle on a 1993 Volvo 940, first ensure the engine is at normal operating temperature. Then, locate the idle adjustment screw on the throttle body, which is typically near the throttle linkage. Use a screwdriver to turn the screw clockwise to increase idle speed or counterclockwise to decrease it. Finally, verify the idle speed with a tachometer to ensure it meets the manufacturer's specifications, usually around 750 RPM for automatic transmissions.
This is computer controlled
Idle is computer controlled and can NOT be adjusted.
You can't. The idle speed is controlled by the Engine Control Module or ECM.
The idle is control by the idle air control motor from outputs from the Engine Control Module.
There is no adjustment, the idle is controlled electronically. If you have idle problems you may have a vacuum leak somewhere.
You probably can't. fuel injected cars have the idle set by the ecm.
In most 1990s and later vehicles you cannot adjust the idle. It is controlled by the ECM or computer. An idle that is not correct indicates something like a vaccuume leak or a sensor issue.
To adjust the idle setting on a Volvo 740 estate wagon, first, ensure the engine is warmed up to operating temperature. Locate the idle adjustment screw, which is typically found on the throttle body. Turn the screw clockwise to increase the idle speed or counterclockwise to decrease it, making small adjustments and checking the idle speed with a tachometer. Finally, ensure that the adjustment is within the manufacturer's specified range for optimal performance.
Ford stopped manufacturing the Falcon in 1970.
To adjust the idle speed on a 1991 Volvo 740, locate the idle adjustment screw on the throttle body. Start the engine and allow it to reach normal operating temperature. Use a tachometer to measure the idle speed, then turn the adjustment screw clockwise to increase the idle speed or counterclockwise to decrease it, ensuring it stays within the recommended range of 750-900 RPM. Finally, recheck the idle speed to confirm the adjustment and ensure the engine is running smoothly.
Idle speed is set by the PCM and is not adjustable. The screw you are fiddling with is just the stop screw to adjust the initial throttle plate position, it should not be used to attempt to adjust the idle.
The idle is controls ONLY by the PCM. Replace your ECTS along with cleaning the Idle Air Control valve located on the throttle body.