Adjustment Of Idle Speed And Maximum Speed; Initial Conditions; Adjust Idle Speed; Adjust Maximum Speed - Toyota 1PZ Repair Manual

ENGINE MECHANICAL
ADJUSTMENT OF IDLE SPEED AND
MAXIMUM SPEED
1.

INITIAL CONDITIONS

(a) Engine at reach normal operating temperature
(b) Air cleaner installed
(c) All accessories switched OFF
(d) All vacuum lines properly connected
(e) Valve clearance set correctly
(f) Injection timing set correctly
(g) Transmission in N range
2. CONNECT TACHOMETER
3.

ADJUST IDLE SPEED

(a) Check that the adjusting lever touches the idle speed
adjusting screw when the accelerator pedal is re-
leased.
If not, adjust the accelerator linkage.
(b) Start the engine.
(c) Check the idle speed.
Idle speed:
1PZ
1HZ M/T
1HZ A/T
1HD-T M/T
1HD-T A/T
(d) Adjust the idle speed.
• Disconnect the accelerator linkage.
• Loosen the lock nut of the idle speed adjusting
• Adjust the idle speed by turning the IDLE SPEED
Idle speed:
1PZ
1HZ M/T
1HZ A/T
1HD-T M/T
1HD-T A/T
• Securely tighten the lock nut, and recheck the idle
• Reconnect the accelerator linkage.
• After adjustment, adjust the accelerator linkage.
4.

ADJUST MAXIMUM SPEED

(a) Check that the adjusting lever touches the maximum
speed adjusting screw when the accelerator pedal is
depressed all the way.
If not, adjust the accelerator linkage.
Engine Tune-Up
600-700 rpm
600-700 rpm
660-760 rpm
600-700 rpm
750-850 rpm
screw.
ADJUSTING SCREW.
650 rpm
650 rpm
710 rpm
650 rpm
800 rpm
speed.
EM-27