Corolla/FX L4-1587cc 4A SOHC (1984)
Air/Fuel Mixture: By Symptom
Emissions - Catalytic Converter Odor Reduction Procedure
REFERENCE Emission Control NUMBER 001 DATE 08-29-86 MODEL AE7#, AE8#. AL3#
To reduce possible Catalytic Converter odors on vehicles equipped with the 3A-C, 4A-C and 4A-LC engines on 1983 and later California specifications,
the idle CO must be set to 0.3% and the specified engine speed must be adjusted as shown below.
Power
4A-C
4A-LC
T/M
Steering
3A-C
'83
'84 '85
'86
'84 '85
'86
M/T
W/O
5 M/T 650 rpm
650 rpm
700 rpm
700 rpm
650 rpm
650 rpm
4 M/T 550 rpm
With
800 rpm
800 rpm
800 rpm
750 rpm
650 rpm
650 rpm
A/T
W/O
800 rpm
800 rpm
800 rpm
800 rpm
800 rpm
750 rpm
With
900 rpm
900 rpm
900 rpm
850 rpm
800 rpm
750 rpm
Procedures are as follows:
CARBURETOR
1.
REMOVE CARBURETOR
(a)
Before disconnecting the vacuum hoses, use tags to identify how the vacuum hoses should be reconnected.
(b)
Remove the carburetor from the engine.
(c)
After removing the carburetor, cover the intake manifold with a clean cloth.
MAS PLUG
2.
REMOVE MIXTURE ADJUSTING SCREW PLUG (MAS PLUG)
(a)
Plug each carburetor vacuum port to prevent entry of steel particles when drilling.
(b)
Mark the center of the plug with a punch.
