[Picture] How to solve the high idle speed of 50O6 Buick gl8p0507 is to wash the accelerator, which is the same height after matching.

Model 06 is a bit old, and the circuit and sensor performance may deteriorate.

Let's analyze it bit by bit.

Firstly, consider the increase of idle speed caused by the change of air intake and electric signal.

1. You cleaned the throttle, but I checked the information of model 06 GL8, and its idle speed control is realized through the idle channel, so you should check whether the idle motor is stuck, clean the idle motor first, and then match it;

2. If the idle speed is still high, check the circuit of the idle motor to see if there is any disorder in the ground control of the ground wire, which leads to the failure of the idle motor;

3. Check other sensor signals that affect air intake, such as intake manifold pressure sensor, water temperature sensor and air temperature sensor;

4. Check whether the air inlet pipe leaks after the throttle valve;

5. Check whether the secondary air is not turned off after the cold start, resulting in an increase in air intake and an increase in idle speed.

Check these first, then talk about it later.