Note. Before checking the idle speed, check the serviceability of the spark plugs, injectors, idle speed regulator, compression in the engine cylinders.
Verification conditions:
- Coolant temperature should be within 80–85°C;
- Lighting, electric fan of the engine cooling system and all auxiliary equipment must be turned off;
- put the shift lever in neutral position (on vehicles with automatic transmission, set the selector lever to the position «R» or «N»);
- set the steering wheel to the straight ahead position (only for vehicles with power steering).
Connect a control tachometer to the primary winding of the ignition coil (follow the instruction manual for the tachometer) or connect the HI-SCAN instrument to the electrical connector of the data line.
Start the engine and let it idle.
Increase the engine speed to 2000–3000 min-1 for more than 5 seconds, then let the engine idle for 2 minutes.
Check the idle speed on the tachometer
The idle speed of the crankshaft must correspond to the values \u200b\u200bgiven in table 2.16 «Data for verification».