What Are the Causes of Low Car Idle Speed?
1 Answers
The causes of low car idle speed are: 1. Fuel accumulation or carbon buildup in the throttle body; 2. Dirty intake manifold; 3. Weak spark due to faulty spark plugs; 4. Malfunctioning idle control valve; 5. Poor atomization or clogging of the fuel injector; 6. Changes in oil viscosity. The solutions for low car idle speed are: 1. Check the throttle body for fuel accumulation or carbon buildup; 2. Clean the intake manifold; 3. Inspect the condition of the spark plugs; 4. Check if the idle control valve is malfunctioning; 5. Examine the fuel injector for issues; 6. Replace the engine oil promptly. The causes of high car idle speed are: 1. Idle switch not closing; 2. Faulty idle control valve; 3. Air leak in the intake pipe; 4. Incorrect valve timing; 5. Fuel injector dripping or clogging; 6. Blocked exhaust system; 7. EGR valve opening during idle conditions.