The idle signal voltage of the throttle position sensor is slightly higher. What is the reason?

1, check the air intake system. Clean throttle valve, check air chamber, etc. , and check whether the vacuum tube falls off or leaks;

2. Check the electrical system. Check the high voltage line, spark plug, ignition coil, ignition timing, etc.

3. Check the oil supply system. Check the electronic oil pump, nozzle, acceleration pump, etc.

4. The air intake of the engine is very small, which leads to the rich mixture. The engine is not easy to start because of the large gap between the concentration of mixed gas and the air-fuel ratio required for starting. Check the air intake system, the air intake pipe for no air leakage, whether all vacuum tubes are connected properly, the air grille and the throttle valve for no sticking. Check the idle motor, sometimes the idle motor will get stuck. Moreover, the higher the temperature, the higher the frequency of idling motor jamming;

5. Check whether the coolant temperature sensor is short-circuited or open-circuited, and the other is to check whether the EGR solenoid valve and circuit are short-circuited or open-circuited.