Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Idle Speed: Specifications
Idle Speed
CURB IDLE SPEED
Federal
Automatic ................................................................................................................................................................. 500 rpm (high altitude 600 rpm)
Manual ........................................................................................................................................................................................................... 700 rpm
California
Automatic/Manual ......................................................................................................................................................................................... 550 rpm
A/C ON IDLE SPEED
Manual ................................................................................................................................................................................................................. 800 rpm
Automatic ............................................................................................................................................................................................................ 650 rpm
FAST IDLE SPEED
Federal
Automatic .................................................................................................................................................................................................... 1800 rpm
Manual ......................................................................................................................................................................................................... 1700 rpm
High Altitude ............................................................................................................................................................................................... 1500 rpm
California
Automatic/Manual ....................................................................................................................................................................................... 1800 rpm
NOTE: All fast idle speeds are measured with the fast idle cam on the high step.
