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Home >> Isuzu >> 1993 >> Trooper LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - EFI >> Idle Speed & Ignition Timing
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Idle Speed & Ignition Timing

For adjustment procedures, see ADJUSTMENTS - EFI article.

IDLE SPEED SPECIFICATIONS

Application Idle RPM
Amigo (1)(2)(3)
2.6L 900
Pickup
2.6L (1)(2)(3) 900
3.1L 800
Rodeo
2.6L 900
3.2L (4) 750
Trooper (4) 750
(1) Transmission or transaxle in Park or Neutral.
(2) Disconnect fuel pressure regulator Vacuum Switching Valve (VSV). Disconnect and plug canister purge and EGR vacuum lines.
(3) On California models, disconnect and plug vacuum line for EGR vacuum switching valve.
(4) Idle speed is controlled by ECM and is not adjustable.
BASE IGNITION TIMING

Application (Degrees BTDC @ RPM)
Amigo, Pickup & Rodeo 2.6L 12 @ 900
Pickup 3.1L 10 @ 800
Rodeo 3.2L & Trooper 5 @ 750
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