LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Infiniti
>>
1990
>>
Q45
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Controls - Tests W/O Codes
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Engine Controls - Tests W/O Codes
Expand All (for easy ctrl-f)
Collapse All
Introduction
Symptoms
Symptom Diagnosis
High Idle - Warm
Hunting Idle
Unstable Idling After Warm-Up
Hard Or Impossible To Start
Cold
Under Normal Conditions
Hot
Hesitation
Cold
Under Normal Conditions
Hot
Engine Stall
Cold
Hot
On Momentary Acceleration
After Deceleration
Acceleration Or Cruising
Heavy Electrical Load
While Turning
Lack Of Power & Stumble
Detonation
Surge
Backfire
Intake
Exhaust
Symptom Procedure Definition
Intermittent Problem Diagnosis
Test Procedures
Notes
Intermittent Simulation