Summit L4-1468cc 1.5L SOHC (1989)
SOHC-ENGINE
IDLE SPEED CONTROL AND THROTTLE POSITION SENSOR ADJUSTMENT Adjustment conditions
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Engine coolant temperature: 85 - 95~C (185 - 205~F)
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Lights, electric cooling fan and accessories: Set to OFF
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Transaxle: Neutral (P for A/T)
^
Steering wheel: Straightforward (vehicles with a power steering)
(1)
Slacken the accelerator cable enough.
(2)
Connect a tachometer.
(3)
Connect a digital voltmeter between terminal 19 (throttle position sensor output voltage) of the engine control unit and terminal 24 (ground).
(4)
Set the ignition switch at ON (without starting the engine), hold it in that position for more than 15 seconds or more.
(5)
Set the ignition switch at OFF.
(6)
Disconnect the connectors of the idle speed control servo and lock the idle speed control plunger at the initial position.
(7)
Back out the fixed SAS enough.
(8)
Start the engine and let it run at idle.
(9)
Check to ensure that the engine is running at the standard basic idle speed.
Basic idle speed:
750 +/- 50 rpm - COLT, SUMMIT
700 +/- 50 rpm - COLT STATION WAGON, COLT VISTA
Caution
(1)
On a new vehicle [driven less than 500 km (300 miles)), the engine speed may be 20 to 100 rpm lower, but no adjustment is necessary.
(2)
If the engine stalls or the engine speed is low after the vehicle has been driven
a distance of 500 km (300 miles) or more,
a deposit on the throttle valve area is
suspected. Clean the throttle valve area.
TSB # 14-55-89 November 27, 1989
PUBLICATION NO. 81-270-9011 PAGE 14-30B
