1994 Infiniti Q45 BaseFACTORY OEM SERVICE PROCEDURE

Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. For adjustment procedures, see ADJUSTMENTS article.

IDLE SPEED

Application (1) Idle RPM (2) Idle RPM
Q45 600-700 600-700
(1) Transmission in Neutral, air conditioner off and no electrical load.
(2) Transmission in Neutral and air conditioner on.
IGNITION TIMING (Degrees BTDC @ RPM)

Application Specification
Q45 (1) 13-17 @ 600-700
(1) Automatic transmission in Neutral.
Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.