Glk300 throttle stuck in closed position.

Glk300 throttle stuck in the closed position for two reasons:

One is that the throttle is stuck in a certain position due to excessive carbon deposition, and the other is that the throttle is stuck in a certain position during the learning process, which may be the problem of the throttle return spring or the throttle motor. In the first case, you can prepare cleaning tools:

1. gloves, ordinary thread gloves will do. There is no need to use antiseptic gloves. This cleaner is still very gentle.

2. The screwdriver is used to open the rear cover of the engine.

3.e-type casing, size e 1 1.3/8 interface. Corresponding 3/8 fly wrench and 3/8 interface lever.

4. Throttle cleaner, it is best not to buy "carburetor cleaner". I heard that it is too corrosive, which is not good for some sensors.

Also use an ordinary cotton cloth to clean the dirty things.

If it really doesn't work, you can choose to go to the 4s shop to clean up and let professionals help you check the problem.