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Idle Speed & Ignition Timing

Ensure idle speed and base ignition timing are set to specification. Refer to the appropriate IDLE SPEED SPECIFICATIONS  table and/or IGNITION TIMING  table in this article. If necessary, see ADJUSTMENTS article for adjustment procedures.

IDLE SPEED SPECIFICATIONS (1)

Application Idle RPM
X-90
A/C Off 750-850
A/C On 950-1050
(1) Transaxle or transmission in Neutral or Park.
IAC DUTY AT SPECIFIED IDLE SPEED (1)

Application (2) Percent
X-90 50
(1) See IDLE SPEED SPECIFICATIONS  table.
(2) With A/C turned off (if equipped).
IGNITION TIMING (Degrees BTDC @ RPM) (1)

Application Man. Trans. Auto. Trans.
X-90 (2) 4-6 @ 800 (2) 4-6 @ 800
(1) See ADJUSTMENTS article for adjustment procedures.
(2) With jumper wire installed between terminals "D" and "E" of test connector located near coolant recovery bottle.
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