Autopapyrus · Lada 2115 1.6 8V (2007)
https://autopapyrus.com/guides/lada/2115/throttle-body-cleaning/
https://autopapyrus.com/guides/lada/2115/throttle-body-cleaning/
Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.
Lada 2115 1.6 8V (2007): Throttle Body Cleaning
Over time, the throttle body on the 1.6 8V engine (VAZ-11183) builds up oily carbon deposits. This causes a fluctuating or high idle speed, hesitation when pulling away, and unstable engine running. You can clean it without removing the throttle body (quicker) or with it removed (more thorough). Do not spray cleaner onto the electronic throttle position sensor or the idle air control valve.
Part
- 🔩 Consumables: throttle body cleaner (aerosol). If removing the throttle body, a new throttle body gasket or seal ring is recommended. A complete throttle body assembly is a separate item and is not needed for cleaning
Step by step
12 steps- Let the engine cool down (to no more than about 45 °C (113 °F)), shut off the engine, and disconnect the negative battery terminal.
- Loosen the clamp and remove the corrugated air intake hose from the throttle body (the one running from the air filter/mass airflow sensor).
- Inspect the throttle plate and the bore walls. The typical sign of buildup is a black, oily film around the edges of the plate and the area around it.
- No-removal method: disconnect the throttle cable from the throttle lever (drive sector) and leave the throttle body in place. Apply cleaner to a rag (do not pour much into the bore) and wipe the bore walls and both sides of the throttle plate. Open the plate by hand using the drive sector, working against the return spring force, and do not let it snap open or shut abruptly.
- Removal method (recommended for heavy buildup): disconnect the connectors from the throttle position sensor and the idle air control valve, remove the throttle cable, loosen the clamps, and remove the crankcase ventilation hoses and, if fitted, the coolant hoses.
- If the coolant hoses are removed, plug the ports with M12 bolts so you don't lose coolant. Alternatively, remove the throttle body without draining the coolant by quickly blocking both hoses with plugs.
- Remove the throttle body mounting fasteners from the intake receiver with a 13 mm wrench, then remove the throttle body and the seal (gasket or ring). Mark the position of the hoses before removal.
- Clean the housing and throttle plate with cleaner and a rag down to bare metal. Wipe the throttle position sensor and idle air control valve carefully on the outside only, without spraying anything inside them. Wipe off the cleaner immediately so it does not remain on the electrical contacts.
- Install the throttle body with a new seal in reverse order. The tightening torque for the throttle body mounting is low, so tighten moderately in a crisscross pattern without excessive force (for the exact value, follow the manufacturer's specification).
- Reconnect the hoses, connectors, and throttle cable, and check the clamps. Make sure the pedal and throttle plate move freely and return to their rest position.
- Reconnect the battery terminal. If necessary, top off the coolant and bleed air from the system if you opened the cooling circuit.
- Start the engine and let it warm up to operating temperature. After cleaning, the idle speed may be unstable while the engine control unit relearns, and this is normal for a few minutes. If the idle remains rough, check the idle air control valve and the throttle position sensor.
Common mistakes and warnings
- Do not spray cleaner inside the throttle position sensor or the idle air control valve, and do not leave it on the electronics. Do not insert sharp objects into the bore or scratch the throttle plate, because a damaged edge disrupts idle. When working with coolant and removing hoses, be careful: antifreeze is toxic.