Idle Mixture
NOTE:
Idle mixture is controlled by Bosch Motronic M5.2.1 engine management system through the ECM. Mixture is not adjustable, but should be checked as part of normal tune-up procedure using an exhaust gas analyzer. If vehicle is not within specifications, see SELF-DIAGNOSTICS article. Always refer to SERVICE INFORMATION underhood label in engine compartment. If underhood label and lemon-25(R) specifications differ, always use underhood label specifications. See IDLE SPEED & MIXTURE SPECIFICATIONS
table. IDLE SPEED & MIXTURE SPECIFICATIONS
| Application |
Specification |
| Base Idle Speed |
| Discovery Series II |
610-710 RPM |
| Range Rover |
660 RPM |
| CO @ Idle |
| Discovery Series II |
Less Than 0.5% |
| Range Rover |
|