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Home >> Isuzu >> 1992 >> Rodeo XS, 4WD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Idle Speed & Ignition Timing
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Idle Speed & Ignition Timing

For adjustment procedures, see appropriate ADJUSTMENTS article in the ENGINE PERFORMANCE Section.

IDLE SPEED SPECIFICATIONS (1)

Application Idle RPM
Amigo & Pickup 2.6L (2)(3)(4) 900
Rodeo
2.6L 900
3.1L 800
Trooper (5) 750
(1) If specification varies from underhood Vehicle Emission Label, use specification from label.
(2) Transmission or transaxle in Park or Neutral.
(3) Disconnect fuel pressure regulator Vacuum Switching Valve (VSV). Disconnect and plug canister purge and EGR vacuum lines.
(4) On California models, disconnect and plug vacuum line for EGR vacuum switching valve.
(5) Idle speed controlled by ECM and is not adjustable.
IGNITION TIMING (Degrees BTDC @ RPM) (1)

Application Base Timing
Amigo, Pickup & Rodeo
2.6L 12 @ 900
3.1L 10 @ 800
Trooper 5 @ 750
(1) With jumper wire installed in ALDL connector, located behind right side of instrument panel. Increase engine speed to 1500-2000 RPM to read timing specification (if necessary).
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