Toyota 4-Runner 1985 Repair Manual page 229

FI-60
-
EFI SYSTEM - Air Intake System
FI0595
Oll~
o
FI0607
1,---
~
I
I
~
__ ID_L _ _
FI0594
FI0606
(b) Check the vacuu m at each port .
• Start the engine .
• Check the vacuum with your finger.
Port No.
At idling
At
3,000
rpm
E No vacuum
R
No vacuum
P No vacuum
2. CHECK THROTTLE POSITION SENSOR
Check the resistance between the terminals.
Vacuum
Vacuum
Vacuum
• Unplug the connector from the sensor.
• Insert a thickness gauge between the throttle stop
screw and stop lever.
• Using an ohmmeter, check the resistance between
each terminal.
Clearance between
Between terminals
lever and stop screw
o
mm (0 in.) VTA - E2
0.57
mm
(0.0224
in.)
IDL - E2
0.85
mm
(0.0335
in.)
IDL - E2
Throttle valve fully
VTA - E2
opened position
- Vee - E2
REMOVAL OF THROTTLE BODY
1. REMOVE AIR INTAKE CONNECTOR
2. DISCONNECT FOLLOWING HOSES:
(a) No.1 and No.2 water by-pass hoses
(b) PCV hose from the throttle body
Resistance
0.2 - 0.8 kn
Less than 2.3 k~.
Infinity
3.3 - 10 kn
3 -7 kn
(c) Label and disconnect the emission control hoses.
3. DISCONNECT THROTTLE SENSOR CONNECTOR
4. REMOVE THROTTLE BODY
Remove the four bolts and remove the throttle body and
gasket.