What Causes Idle Vibration After the Car Warms Up?

1 Answers
MacVanessa
07/29/25 11:01am
Reasons for idle vibration after the car warms up: 1. The idle speed motor is damaged and cannot adjust the opening of the air valve; 2. The fuel injector is clogged or the fuel pump is faulty, the fuel line is obstructed; throttle body failure, air leakage prevents proper control of the air intake; 3. The intake sensor is faulty, leading to uncontrolled air intake; 4. Engine control logic error, unable to stabilize idle speed. Solutions for idle vibration after the car warms up are: 1. Clean the fuel system, check the idle speed motor for carbon buildup and clean if necessary; 2. Inspect the spark plugs for excessive carbon deposits and replace them if needed; 3. Check the fuel pressure and replace components as necessary.
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