Vanagon F4-1970cc 2.0L (1982)
Idle Speed: Testing and Inspection
California Only
Checking And Adjusting Idle Speed And CO %, (Calif. only)
Preconditions:
Engine oil temperature min. 60°C (140°F)
Intake air sensor must be 20°C (68°F)
All electrical equipment must be OFF
Hose for charcoal filter must be disconnected and blocked at air filter
Note: To check engine rpm on vehicles with oxygen sensor and electronic ignition (Calif. vehicles), resistor adaptor must be used in conjunction with
commercial tach/dwell meter
Work Sequence
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Assemble and connect adapter according to illustration
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Check idle speed (with idle stabilizer connected)
850 - 950 rpm
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Disconnect plugs on idle stabilizer and connect together (arrow)
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Check ignition timing and if necessary adjust
5° ATDC at idle and vacuum hoses connected
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Check idle speed and if necessary, adjust
850 - 950 rpm (at adjusting screw)