Does Buick Angola have a throttle washer?

If the GL8 cleans the throttle, there will be no high idle speed (because it is not an electronic throttle). There may be a problem with the idle motor or throttle position sensor!

If Lu Zun clears the throttle, the idle speed may be high, but the probability is very low! It's bad luck that you hit it. At least we've cleaned the throttles of so many Lu Zun cars, and there is no high idle speed for the time being!

Some Lu Zun tried to idle at high speed when cleaning the throttle in other repair shops. Finally, we will do our 4S shop well! In fact, only 4S stores can do well! Because the re-matched data, software and equipment are only available in 4S stores!

I don't know if yours is Lu Zun or GL8. You'd better go to the 4S shop.