RMP AT IDLE | Ford Explorer Forums - Serious Explorations

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RMP AT IDLE

Adam Foote

Well-Known Member
Joined
December 9, 2001
Messages
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City, State
Katy, Texas
Year, Model & Trim Level
92 XLT
Hey does anyone know how to adjust the rpms of a 92 4.0 explorer when it is idling? is there some sort of screw near the accelerator cable or what? thanks
 



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The idle speed is controlled by the computer via the idle speed control motor/idle air control valve. I don't think there is any provision for adjustment.
 






hmmmm

well then if you have a 91-94 explorer could you possibly tell me what your rpms are at idle?
 






Mine idles at about 600-700 RPM in park, using the in dash tachometer.
 






Adam, if your idle is off try cleaning the IAC valve on the driver side of the upper manifold--looks like a long cylinder attached by two or three bolts. You can use throttle body cleaner or brake cleaner, just be sure to get it all out and let it dry. Next I would invest in some good plug wires. When I got my Jacobs my idle dropped to 600-700 range and became very, very smooth. About $50 with lifetime warranty.
 






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