Vanagon Syncro AWD F4-2109cc 2.1L (MV) (1989)
Throttle Full Close Switch: Testing and Inspection
Throttle Valve Switch, Checking and Adjusting
Checking And Adjusting Throttle Valve Switch
Note: The throttle valve switch indicates the throttle position to the control unit for the following functions:
Throttle valve closed
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Injection quantity for idle
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Switching off the injection quantity during deceleration fuel shut-off
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Ignition point setting in idle (DLS function)
Throttle valve completely open
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Injection quantity for full throttle
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Check continuity of throttle valve switch at connector 1
Switch must display continuity only during idle and full throttle position of throttle valve switch
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Open throttle valve and close slowly. While doing so, check switching point (continuity) of switch with feeler gauge at idle stop of throttle valve
lever
Switching point: gap (a) 0.05 - 0.10 mm (0.002 - 0.004 in) before idle stop
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If necessary, adjust gap (a) with eccentric screw 3 (first loosen screw 2)
Note: Proper adjustment is important.
If gap (a) too LARGE
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Engine will surge when throttled slightly
If gap (a) too SMALL
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Cold engine will stall out when given gas
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Warm engine will have NO fuel deceleration shut-off
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Warm engine will have NO DLS function at idle
Note: The limiting screw for basic throttle valve adjustment must not be changed. If the screw is turned by mistake, it will be necessary to carry out a
basic adjustment of the throttle valve.