Topaz L4-140 2.3L HSC (1984)
Canister Purge Solenoid: Customer Interest
Carburetor - Engine Idles Rough/Stalls
Article No. 85-14-10
IDLE - ROUGH - 2.3L HSC WITH MODEL 6149 CARBURETOR
STALLS - 2.3L HSC WITH MODEL 6149 CARBURETOR
FORD 1984 TEMPO
LINCOLN-MERCURY 1984 TOPAZ
CALIBRATIONS: 4-25A, D, E, F; 4-26D, E, J, K, S
WARNING:
This modification is authorized only for the listed engines. Performing this modification on other engine calibrations is unauthorized and
could create liability under applicable federal or local laws.
Rough Idle and/or Stalling may be due to incorrect idle mixture settings or other concerns affecting the Idle Air/Fuel Ratio. The following is a procedure
which will help to determine the cause and provides a method for correctly setting Idle Air/Fuel mixture.
1.
Verify the integrity of the EEC system by performing the EEC system diagnostics described in the 1984 Emission Diagnosis Shop Manual, Section
18, and if necessary, Section 25.
Figure 13 - Disconnect Vacuum Lines
2.
Verify the vapor purge solenoid function as follows:
a.
With the engine off, disconnect the vapor purge vacuum lines at the carburetor and at the thermal vent valve (Figure 13), then blow through
the end of the vacuum line that is attached to the carburetor. The vacuum line and purge solenoid system should be unobstructed to
atmosphere.
b.
Start the engine, and again blow through the vacuum line. The vacuum line and purge solenoid system should be blocked.
c.
If the above conditions are not met, verify voltage to the purge solenoid. The electrical connector to the solenoid should receive 12 volts with
the engine running.
d.
Service the electrical system or replace the purge solenoid as required. Reconnect the purge vacuum lines before proceeding.
3.
Verify the feedback solenoid functions as follows:
a.
Disconnect the electrical harness connector from the feedback solenoid.
