Onvehicle Inspection

1. INSPECT THROTTLE BODY

(a) Check that the throttle linkage moves smoothly.

(b) Check the vacuum at each port. •Start the engine.

•Check the vacuum with your finger.

Port name At idling Other than idling

P No vacuum Vacuum

E No vacuum Vacuum

R No vacuum No vacuum

INSPECT THROTTLE POSITION SENSOR

(a) Apply vacuum to the throttle opener.

(b) Disconnect the sensor connector.

(c) Insert a feeler gauge between the throttle stop screw and stop lever.

(d) Using an ohmmeter, measure the resistance between each terminal.

Clearance between lever and stop screw

Continuity between terminals

IDL - E1

PSW - E1

0.50 mm (0.020 in.)

Continuity

No continuity

0.90 mm (0.035 in.)

No continuity

No continuity

Throttle valve fully opened

No continuity

Continuity

VTA-ijEJ

fi4823 fl0507

(e) Reconnect the sensor connector. 3. (A/T)

INSPECT THROTTLE POSITION SENSOR

(a) Apply vacuum to the throttle opener.

(b) Disconnect the sensor connector.

(c) Insert a feeler gauge between the throttle stop screw and stop lever.

(d) Using an ohmmeter, measure the resistance between each terminal.

Clearance between lever and stop screw

Between terminals

Resistance

0 mm (0 in.)

VTA - E2

0.2 - 0.8 kQ

0.50 mm (0.020 in.)

IDL - E2

2.3 kQ or less

0.70 mm (0.028 in.)

IDL - E2

Infinity

Throttle valve fully opened

VTA - E2

3.3 - 10 kQ

-

VC-E2

3-7 kQ

(e) Reconnect the sensor connector.

(e) Reconnect the sensor connector.

4. INSPECT THROTTLE OPENER

2,500 rpm

2,500 rpm

Disconnect

Tachometer ec3879 ec0138

Disconnect

Tachometer ec3879 ec0138

A. Warm up engine

Allow the engine to warm up to normal operating temperature.

B. Check idle speed

Idle speed: 700 ± 50 rpm USA M/T 700 ± 50 rpm USA A/T 850 ± 50 rpm CANADA M/T 750 ± 50 rpm CANADA A/T

C. Check and adjust throttle opener setting speed

(a) Disconnect the vacuum hose from the throttle opener, and plug the hose end.

(b) Maintain the engine at 2,500 rpm.

Tachometer

ec0137

(c) Release the throttle valve.

(d) Check that the throttle opener is set.

Throttle opener setting speed:

Throttle Opener Adjusting Screw

ec3880

(e) Using a hexagon wrench, adjust the throttle opener setting by turning the throttle opener adjusting screw.

ec3880

(f) Reconnect the vacuum hose to the throttle opener.

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