Table of Contents
Advertisement
Pege 33
T_},t Number_!9--CarburetorAdjustment--Curb
idle Speed
2.
Rotate the Function Selector Switch to the RPM position.
Slide the
Range Switch to the L0-1200 RPM position for idle speed tests.
IDLE SPEED ADJUSTMENT.
Engine must be at normal operating temperature
before setting curb idle.
Refer to vehicle specifications for idle
RPM range. Check for variations in curb idle with air conditioner on,
and any other specified idle range requirements.
Curb idle speed can be affected by other engine adjustments such as
timing, air/fuel ratio, and emission control operation.
Carefully follow
manufacturer's instructions when adjusting curb Idle.
Be certain to
recheck it after making any other engine adjustments.
Aw
Anti-Dleseling Solenoid Adjustment
The purpose of this device is to prevent engine run-on (dieseling) after
the key is turned off.
Basic operation of this solenoid is as follows:
When the ignition key is in the run position, voltage is applied to the
solenoid, energizing it and causing it to move the idle position of
the throttle. Curb Idle is adjusted with the solenoid energized.
When
the key is turned off the solenoid retracts and allows the throttle-
plates to close or return to a base idle, hence, sh_tting off the fuelialr
supply to the engine.
By using the RPM, VOLTS, and OHMMETER sections
of your Craftsman Analyzer and specific tests described in your vehicle
service manual, you will be able to diagnose faults and properly adjust
the antl-dleseling solenoid.
8_
Air-Conditionlng Solenoid Adjustment
The purpose of the Air Conditioning solenoid is to maintain proper engine
idle speed with the vehicle's air conditioner running.
It is
energized by the same circuit as the Air-Conditioning clutch and
when energized "kicks" the throttle enough to bring the idle to
its intended curb idle speed, By using the RPM, VOLTS, and OHMMETER
sections of your Craftsman Analyzer and specific tests described in
your vehicle service manual, you will be able to diagnose faults
and properly adjust the air-conditioning solenoid.
Hide quick links:
Advertisement
Table of Contents
