Accelerator Throttle Switch Calibration; Co Percentage Timing At Exhaust - Alfa Romeo 33 Workshop Manual

screw 0~ u?til speciofied flow value
i s o b t a i n e d .
b. On completion of the setting reseal
the seating ~ of, the adjusting screw
ACCELERATOR
1. Disconnect female connecter from
"throttle swhch.; Check on male con-
a tester. ~
a. With throttle entirely closed bet-
b. Slowly rotate throttle: with tester
throttle bas rotated by 1' with respect
to fully closed position.
2. If this Con~dition doesn't take place,
with completely closed throttle; then
tighten screws again.
FUEL SYSTEM
3. Rotate throttle 60° f 4' and check
lowing resistances on male connec-
tors, with tester.
With accelerator throttle open by
an angle of a3 60" f 4O between
terminals 3 and 13 one must de-
mately.
4. If these value are not detected,
switch.
1 Screw fixing switch to throttle body
2 Idle rpm terminal (it corresponds to posi-
tion A: closed throttle)
3 Max. rpm (it corresponds to position B:
CO PERCENTAGE
TIMING AT
EXHAUST
Detect CO percentage on exhaust gas
following the procedure stated in
Group 00 - Engine M.aintenance - Ex-
haust Emission Control.
Whenever detected values are higher
than maximum specified values,
if they are faulty, replace them.
WARNING: ~
CO percentage setting and exhaust
if 'an air flow 'sensor and electronic CU
have been replaced.
1
Operate as stated below::
1 A i r f l o w ~ sensorlelectronic
2 C O S e t t i n g s c r e w s e a t s e a l i n g c a p
2. Start engi'ne and run it to normal
running temperature.
3. Connect a suitable exhaust gas
analyzer on exhaust pipe outlet.
4. Cautiously act on CO percentage
adjustment screw until specified value
5. When this operation is complete,
put a new seal cap on CO adjustment
screw Seat.
C U
PA 32 790088330 1