Brad's Car Manuals: A 3rd party mirror of CHARM + LEMON car manuals
Home >> Land Rover >> 1997 >> Defender 90 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Idle Speed & Mixture

Idle Speed & Mixture

Download the full database via torrent (~1.1 TB)  |  Download Brad's custom LEMON patches
NOTE: Engine idle speed and mixture are controlled by ECM based on signals from various sensors. Engine idle speed and mixture are not adjustable. Values given in IDLE SPEED & MIXTURE SPECIFICATIONS  are for verification purposes only. Always refer to SERVICE INFORMATION underhood label in engine compartment. If underhood label differs from these specifications, always use underhood label specifications.
IDLE SPEED & MIXTURE SPECIFICATIONS

Application Specification
Base Idle Speed (1) 680-720 RPM
CO @ Idle
Discovery (2)
Defender 90 Less Than 0.5%
(1) Idle speed is controlled by ECM through Idle Air Control (IAC) valve. With engine at normal operating temperature, IAC valve should be set to 20-25 steps.
(2) Information not available.
scientia non olet · About Brad's Car Manuals