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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> 3.0L - Exhaust System, Emission Controls - Engine Code(S): CATA >> 26 Exhaust System, Emission Controls >> Removal And Installation >> Exhaust Gas Temperature Sensor 4

Exhaust Gas Temperature Sensor 4

Removing 

-- On a vehicle with air suspension, activate vehicle lift mode. Refer to the appropriate service information .

-- Carefully pull the engine cover -arrows- off the 4 bolts one after the other.

Fig 1: Identifying Engine Cover -Arrows-
GWWA10-11000Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -1- and -2- and then remove the heat shield from the turbocharger.

Fig 2: Identifying Bolts -1 To 2- And Turbocharger Heat Shield
GWWA21-10380Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the exhaust gas temperature sensor 4 -G648- brown connector -4-.

Fig 3: Component Location On Plenum Chamber Bulkhead
GWWA26-10324Courtesy of AUDI OF AMERICA, LLC

-- Free up the electrical wire.

NOTE:

Ignore -1, 2 and 3-.

-- Remove the noise insulation -1- and -2-. Refer to the appropriate service information .

Fig 4: Identifying Front/Rear Noise Insulation
GWWA10-10441Courtesy of AUDI OF AMERICA, LLC

-- Remove and free up exhaust gas temperature sensor 4 -arrow-.

Fig 5: Identifying Exhaust Gas Temperature Sensor 4 -Arrow-
GWWA26-10746Courtesy of AUDI OF AMERICA, LLC

Installing 

Installation is performed in reverse order of removal, noting the following.

-- Coat the exhaust gas temperature sensor thread with hot bolt paste.

-- Install the noise insulation. Refer to the appropriate service information .

-- Install the turbocharger heat shield. Refer to TURBOCHARGER OVERVIEW .

-- On a vehicle with air suspension, deactivate vehicle lift mode. Refer to the appropriate service information .