Toyota 4A-F, Руководство по ремонту

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EFI SYSTEM
Air Indvction System
Auxiliary Air Valve
Screw
"��NfOLO
Audiaty An VlIlve
ON· VEHICLE INSPECTION
INSPECT AIR VALVE OPERATION
(w/o Air Flow Meter)
!a!
Remove Ihe ai, cleaner hose.
(b)
Check
the engir)9
rpm by closing the a
i
r
port on the
throUle body.
At low temp . {Cool�nt temp.: below
BO"C
\17S"FU
•
The e
n
g in
e
RPM should d r o p .
After warm-up
•
Check Ihat engine
RPM
does not drop more tharo
1 00 rpm .
If
opera lion is root as specified. replace the air valve.
(wI
A
i
r
Flow
Met.r)
Check
the engine rpm by fully screwing in the idle speed
adjusting screw.
At low temp. (Coolant temp.: below 80°C f1 78"Fll
• When the idte speed adjusting
screw
is in. the
engine rpm should and drop .
After warm·up
•
When !he idle speed adjusting screw i,
in.
the
e ng ine rpm 'hould drop below idle speed duel
stop.
If operation is not 1$ specified, replace the ai' valve.
REMOVAL OF AIR VALVE
1 . REMOVE THROTTLE 80DY
(See ttep. 1
to 6 on p
e
g
e
FI·85)
2. REMOVE AIR VALVE FROM THROTTLE BODY
Remove the five screws. air valve, gll5k.eI and O· ri ng .