Mustang L4-140 2.3L VIN A 1-bbl (1983)
Idle Speed: Adjustments
Curb Idle Speed
4-140
1.
Place transmission into Neutral or Park.
2.
Install a suitable tachometer onto engine as per manufacturer's instructions.
3.
Start and allow engine to reach normal operating temperature.
4.
Place A/C-Heat selector switch to OFF position, if equipped.
5.
Check curb idle speed. If curb idle speed obtained is not as specified, turn curb idle speed adjusting screw until specified speed is obtained. See
image with applicable components.
YFA-i V Non-FB w/TSP-Curb Idle RPM
W/YFA feedback carburetor
YFA-1V Non-FB w/TSP and Idle Tracking Switch-Curb Idle RPM
W/YFA feedback carburetor, TSP & Idle tracking switch
