Toyota Supra 1990 Manual page 276

FI-102
No Clearance
Th rottle Stop Screw
EFI SYSTEM - Air Induction System
F5508
FI3452
FI3456
(7M-GTE)
1. DRAIN COOLANT FROM THROTTLE BODY
2. DISCONNECT ACCELERATOR ROD
3. REMOVE AIR INTAKE CONNECTOR
(See steps 3 to 5 on page EM-12)
4. DISCONNECT VACUUM HOSES
5. DISCONNECT THROTTLE POSITION SENSOR
CONNECTOR
6. REMOVE THROTTLE BODY
(a) Disconnect the two water by-pass hoses from the ISC
valve and water pipe.
(b) Remove the four bolts, throttle body and gasket.
(c) Remove the two water by-pass hoses.
(d) Remove the VTV.
INSPECTION OF THROTTLE BODY
1. CLEAN THROTTLE BODY BEFORE INSPECTION
(a) Wash and clean the cast parts with a soft brush and
carburetor cleaner.
(b) Using compressed air, blow all passages and apertures
in the throttle body.
CAUTION: To prevent deterioration, do not clean the
throttle position sensor and dash pot.
2. CHECK THROTTLE VALVE
Check that there is no clearance between the throttle stop
screw and throttle lever when the throttle valve is fully
closed.