volvo Workshop Repair Guides

Volvo Workshop Service and Repair Manuals

Engine - Inconsistent Idle With A/C ON|Page 4145 > < Engine - Inconsistent Idle With A/C ON|Page 4143
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Throttle Body: Adjustments

ADJUSTMENT OF THROTTLE BODY AND PULLEY

Adjustment of Throttle Body 
^

Disconnect link.

^

Remove Throttle Body (TB) from intake manifold.

^

Remove Throttle Position (TP) Potentiometer from TB.

^

Clean TB carefully.

^

Slacken adjusting screw so that throttle closes fully.

^

Slacken throttle disc mounting screws slightly.

NOTE:  Check that disc is correctly installed i.e. is facing in the right direction. Since edge of disc is thin, careful inspection is necessary to see
chamfered edge.

^

Open throttle about one-third using throttle lever.

^

Release throttle lever quickly so that throttle disc centres itself in throat of opening. Hold TB against light and check that gap is even all round.

^

Check that throttle spindle can be moved backward and forward with slight resistance. Adjust spindle until end projects 13.85mm ± 0.3mm
(0.55in ± 0.15in)
 beyond TB as illustrated.

^

Tighten throttle disc mounting screws to 0.8 - 1.0 Nm (0.59 - 0.74 ft lb).

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