Colt Wagon 2WD L4-1468cc 1.5L SOHC (1990)
Idle Speed: Adjustments
CURB IDLE SPEED INSPECTION
Before checking the CURB idle speed, be sure:
Engine coolant temperature has reached 85-95°C (185 - 205°F)
Engine cooling fan, lights* and electrical accessories are OFF
Transaxle is in Neutral (N) or Park (P)
Steering wheel is at a center position (power steering equipped)
Parking brake is applied.
Verify that the ignition timing is set to specifications.
Refer to ELECTRICAL SPECIFICATIONS
Tachometer Connection
CAUTION: Improper setting of the throttle valve opening will increase exhaust gas temperatures at deceleration, which will greatly reduce the life of
the Catalytic Converter. Also, fuel consumption and engine braking will be affected.
1. Connect a tachometer to the engine speed detection terminal.
2. Start and run the engine for more than 5 seconds at 2,000 to 3,000 rpm.
3. Reduce the rpm and let the engine idle for 2 minutes.
4. Read the CURB idle speed. Refer to MECHANICAL SPECIFICATIONS.
Adjustment of the idle speed is usually unnecessary.
Idle speed on fuel injected vehicles is controlled by the MPI Control Unit through the Idle Speed Control System.
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)
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Steering wheel: Neutral position (vehicles with a power steering)
1. Slacken the accelerator cable enough.
2. Connect a tachometer.