EVAP Canister - Hesitation/Stalls On Light Acceleration
83ford5Article No. 83-24-24
HESITATION/STALLS (5.0L) - DURING LIGHT ACCELERATION IN HOT WEATHER
LIGHT TRUCKS 1983-84 E, F AND BRONCO
CALIBRATIONS: 1983-84 Light Truck 5.0L under 8500 lb. GVW
Some 1983 and 1984 vehicles built prior to 1984 calibration level (R11) may exhibit hesitations/stalls on light acceleration after hot soak and/or idle because of large amounts of fuel vapor in the carbon canister. The installation of a manifold vacuum bleed to the canister will help minimize this concern.
Figure 35:
1. Locate canister purge valve, (-9B963-) which is connected to the canister by use of a 3/8" diameter hose.
2. Cut 3/8" diameter hose (Step #1) 2.0" from purge valve (-9B963-). (Figure 35). Install three-way tee (Part No. E2FZ-9E645-A) which incorporates a .030 restrictor.
3. Cut 1/4" diameter hose 2.0" from purge valve (-9B963-). (Figure 35). Install three-way tee (Part No. 383009-S).
4. Obtain a 7.0" x 1/4" hose and connect one end to the three-way tee (Part No. 383009-S) and connect the other end to the three-way tee (Part No. E2FZ-9E645-A) (Figure 35).
5. Check to ensure that all vacuum hose connections are secure and that they are routed in a manner to avoid any potential obstructions.
Obtain an Authorized Modifications decal and list the date, dealer number and summary of alterations performed. Select a prominent place adjacent to the Vehicle Emission Control Information decal suitable for installing the Authorized Modifications decal. Clean the area, install the decal and cover it with a clear plastic decal shield.
PART NUMBER PART NAME CLASS
E2FZ-9E645-A Vacuum "T" C
383009-S Vacuum "T" (Pkg-4) RM
E1PZ-9324-C 1/4" Vacuum Hose (bulk) B
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: M
TIME: "Actual Time" as defined in the Warranty and Policy Manual. DLR. CODING: Basic Part No. DRIVE Code: H8