Fuel System - Rough Idle/Shudder On Deceleration

83ford11 Article No. 83-14-11


IDLE - ROUGH/STALLS - DECEL LOSS OF POWER - MOMENTARY - (1.6L) MTX TRANSMISSION - CALIBRATIONS 3-03C-R0, R9, 3-03G-R0, 3-03H-R1, 3-03B-R10, R11


FORD 1983 ESCORT, EXP

LINCOLN-MERCURY 1983 LYNX, LN7

CALIBRATIONS: 3-03C-R0, R9, 3-03G-R0, 3-03H-R1, 3-03B-R10, R11

Rough idle or shuddering on deceleration can be serviced by revising the idle fuel shut-off solenoid circuit (I.F.S.O.)

1. Disconnect I.F.S.O. solenoid at carburetor pigtail connector. Tape/fasten wire from main harness to prevent chafing.

Figure 10:

2. Connect jumper wire 9A451 from carburetor connector to bowl vent solenoid. The dual connector of the jumper wire connects in series to the bowl vent (Figure 10). When completed, the current flow to the I.F.S.O. at the carburetor is now from the bowl vent solenoid.
3. Remove spark port vacuum hose (curved section) at Decel Fuel Shut-Off Vacuum Switch (12A182) located at left shock tower. Plug at the Tee using a 5/32 vacuum cap (Figure 10).



4. 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

E3FZ-9A451-A Jumper Wire C


OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP9510D83
TIME: 0.3 Hr. DLR. CODING: Basic Part No. 9510 Code: H7