F 150 2WD Pickup V8-351 5.8L (1986)
Thermal Vacuum Valve: All Technical Service Bulletins
Engine - Hesitation/Stumble On Cold Start Driveaway
Article No. 86-6-31
HESITATION/STUMBLE (5.8L(W)) - DURING COLD START DRIVEAWAY CALIBRATION 4-64Z-R14
LIGHT TRUCK 1986 E, F SERIES, BRONCO
The subject concerns may be caused by an incorrect EGR vacuum control valve. For servicing the concerns, the following procedure is recommended:
1.
Drain cooling system to level that will allow removal of EGR vacuum control valve (color: black). Discard the valve.
2.
Obtain EGR vacuum control valve (part number E3TZ-9D473-A) and install. The valve is blue in color.
