Question 1

What are the steps involved in the removal of the turbocharger and exhaust manifold on Audi A3?

Accepted Answer

Elimination of turbocharger and the exhaust manifold on diesel engines is accomplished in a number of stages. Start with using the handbrake, lifting the front of the car up in the air, using axle stands, then disassemble engine compartment undertray and top cover. Then take the right-hand driveshaft, and the front suspension subframe, which is achieved by unbolstering the exhaust system mounting and heat shield, unbolstering the engine rear-mounting link, place the subframe on a trolley jack, and unscrewing the bolts that hold the steering gear and anti-roll bar in place before lowering the subframe. In the case of engine code BLS, the particulate filter attached to the turbocharger is detached by unplugging the wiring of the exhaust gas pressure sensor and the particulate filter, followed by loosening the clamp. If fitted, unscrew the bolts of the auxiliary heater coolant pipes, unbolt the turbocharger support bracket, and unscrew the oil return pipe. Pull out the EGR cooler connecting pipe, the charge pressure duct, and the oil supply line union nut when the vacuum hose has been broken. Disconnect the wiring to the oxygen sensor(s) making sure that the sensor is still attached to the exhaust manifold. Unscrew the mounting bolts on the exhaust manifold, push the engine forward and slide the exhaust manifold off its mountings, moving the turbocharger down, retrieving and disposing the gasket. To refit, reassemble the turbocharger following the removal procedure in reverse and perform the following steps: renew all the gaskets, seal washers, and O-rings, fill with fresh oil, and reconnect the oil supply pipe, tighten all the nuts and bolts to the required tightness, and ensure that air hose clips are securely tightened, and leave the engine to idle about one minute after refitting to verify that there are no oil or coolant leaks.

Question 2

What is the function and operation of a turbocharger on Audi A3?

Accepted Answer

All engines have a turbocharger which is built into the exhaust manifold and improves the efficiency of the engine by increasing the pressure in the inlet manifold to levels that are greater than those of the atmosphere forcing the air into the cylinders instead of letting it be passively drawn in. The engine works of the turbocharger is energized by the exhaust gas, which is directed to a specifically-shaped turbine housing and turns the turbine wheel by means of a shaft that connects with a compressor wheel. This compressor wheel, which is housed separately, compresses the inducted air before it passes to the inlet manifold. This compressed air is then forced through an intercooler, which cools down part of the heat acquired in the compression process, and again enhances engine efficiency since the air entering is denser, and colder as well. A wastegate that diverts exhaust gas away the turbine wheel is used to control boost pressure in the inlet manifold on a pressure-sensitive actuator. An oil feed pipe to the engine oil filter supplies the turbo shaft with lubricant, which then floats on a cushion of oil, which is pumped back to the sump via a return pipe. Strategies to avoid pre-mature failure, damage, etc. include not operating with exposed components, sealing the air inlet ducts of the engine to keep debris out, not racing the engine until oil flow has persistently circulated, changing oil and filters according to recommended schedules, using quality oil, cleaning around the oil pipe unions prior to disconnection and storing the dismantled components in closed containers to avoid contamination.

Genuine Audi A3 Turbocharger

12 Turbochargers found

Audi A3 Turbocharger Part Number: 06K-145-874-MX

Audi A3 Turbocharger Part Number: 06K-145-654-MX

Audi A3 Turbocharger Part Number: 06K-145-874-P

Audi A3 Turbocharger Part Number: 06K-145-874-M

Audi A3 Turbocharger Part Number: 06Q-145-701-C

Audi A3 Turbocharger Part Number: 06K-145-874-N

Audi A3 Turbocharger Part Number: 06K-145-713-L

Audi A3 Exhaust Manifold Part Number: 06J-145-722-B

Audi A3 Turbocharger Part Number: 06Q-145-703-H

Audi A3 Exhaust Manifold Part Number: 06F-145-701-HX

Audi A3 Exhaust Manifold Part Number: 06F-145-701-H

Audi A3 Exhaust Manifold Part Number: 06F-145-701-C

Audi A3 Turbocharger

Audi A3 Turbocharger Parts and Q&A

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