The idle speed is set at the factory and is NOT adjustable.
replace the ecm
Where is the idle speed motor located at on a 1995 chevy blazer?
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Try replacing the idle air control valve (IAC)
Should be around 25-30 psi. 15-20 at idle speed in drive.
idle speed for a 99 Tahoe
The idle air control valve on the Chevy Colorado actually controls the speed of your engine's idle. The valve is sometimes called the idle speed control valve.
A 1998 Chevy Prism's idle speed is computer controlled. You will have to take it to a garage to get it set. However, the idle speed could be altered if, say, your spark plugs are seriously worn. Changing them may restore the original idle speed.
The idle speed on a 1987 Chevy Celebrity is controlled by the engine computer, there is no way provided to adjust it.
Could be the throttle position sensor
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.
zero degrees top dead center with an idle speed of 5-10 mph