5000 Auto. Trans.
- Drive vehicle to warm up engine. Minimum oil temperature is 140° F (60° C). Turn off all electrical accessories including air conditioning. Apply hand and foot brake, engage transmission in "Drive". Ensure engine fan is not running.
- Perform stall test at end of warm up drive, do not turn engine off. Push accelerator to floor (kick down position), stall speed must be at least 2400 RPM within 4 to 7 seconds.CAUTION: Do not check stall speed longer than 10 seconds.
- If stall speed is not within specifications, full load screw on injector pump must be adjusted. While holding screw with wrench, not screwdriver, loosen lock nut and turn screw clockwise 1/8 turn maximum. Tighten lock nut and recheck stall speed.
- If stall speed is reached in less than 4 seconds, back off adjusting screw (counterclockwise) very slightly. Reseal screw with yellow paint.