Removal and installation the throttle assembly (Chevrolet Cruze J300)

Signs of a throttle valve that does not close completely may include increased idle speed and fuel consumption, and if the valve does not open completely, the engine does not develop full power, jerks and dips are observed in its operation when the car is moving. insufficient throttle response. Contamination of the throttle valve with deposits from crankcase gases usually leads to unstable engine operation at idle. The throttle valve drive is electric, it is controlled by the electronic unit of the engine management system. Qualified personnel and special equipment are required to repair the electric drive. If these malfunctions occur, first try to flush the throttle valve (for example, with a solvent or a special carburetor cleaner in an aerosol can). If this does not produce a positive result, replace the throttle assembly.

You will need: a 10 mm wrench and pliers.

1. Drain the engine cooling system (see "Replacing the coolant").

Note: If you have some experience, you don't have to drain the coolant. Prepare plugs of the appropriate size and plug the hoses immediately after disconnecting them. The loss of coolant with this method will be insignificant.

2. Disconnect the wire from the negative terminal of the battery.



3. Loosen the coolant supply hose clamp by squeezing its bent ears with pliers, slide the clamp along the hose...





4. ...and remove the hose from the throttle body pipe.



5. Loosen the clamp...



6. ...disconnect the air supply hose from the throttle assembly pipe and move the hose to the side.



7. Loosen the coolant outlet hose clamp by squeezing its bent tabs with pliers, slide the clamp along the hose...





8. ...and remove the hose from the throttle body pipe.

Note: If you have not drained the cooling system, to avoid fluid loss, immediately plug the hoses with pre-prepared plugs or bolts of the appropriate size.

9. Squeezing the latch...



10. ...disconnect the wiring harness connector from the connector on the throttle body cover.



11. After unscrewing three nuts and unscrewing one bolt securing the throttle assembly to the intake pipe...



12. ...remove the throttle assembly.

Please note: the connection between the throttle body and the intake pipe is sealed with a rubber ring. Replace a ring that is too tight or torn.

13. If the throttle assembly was not removed for replacement, clean the contaminated throttle assembly with carburetor cleaner.

14. Remove oil and dirt from the intake pipe cavity.

15. Install the throttle assembly in the reverse order of removal.

16. Add coolant if necessary.

(The original article can be found on the resource CHEVYMAN.RU)