Air Cleaner Housing: Service and Repair
Air Filter, Cleaning Housing and Replacing Filter
4.2L
- Remove noise insulation. Refer to=> [ Noise Insulation, Removing ] Noise Insulation, Removing
- Remove strut tower cover. Refer to => [ Strut Tower Cover, Removing ] Strut Tower Cover, Removing.
- Remove hose - arrow - to secondary air injection pump at bottom of air filter housing.
- Remove clips - 1 -.
- Remove bolt - 2 -.
- Remove cover - arrows - upward from air filter housing.
- Remove air guide hose - 2 - on air filter housing.
- Disconnect electrical connector - 1 -.
- Remove bolts - arrows - and remove air filter housing.
• On 4.2L engines, the vacuum hose on the service cover - arrow - must be removed.
- Remove bolts - arrows - from upper part of air filter.
- Remove old filter insert and clean air filter housing.
* Follow notes*
5.2 FSI
Right air filter insert, removing and installing
- Remove air guide hose between Mass Air Flow (MAF) Sensor (G70) and Throttle Valve Control Module (J338) by loosening hose clamps - arrows -.
- Lay aside air guide hose with connected vacuum lines - 1 and 2 -.
- Remove electrical connector from Mass Air Flow (MAF) Sensor (G70).
- Remove bolts - arrows -.
- Remove upper part of air filter housing.
- Remove air filter insert.
• Make sure no dirt enters air filter housing or Mass Air Flow (MAF) sensor.
Installing
Installation is done in reverse sequence while observing the following.
For proper mass air flow sensor function, it is important to observe the following notes and perform the procedure exactly.
• If the air filter insert is heavily soiled or soaked, dirt particles or moisture can reach the Mass Air Flow (MAF) sensor and cause an incorrect air flow reading. This causes lack of performance because a lower injection amount is calculated.
• Always use an original air filter insert.
• The air filter housing must be clean.
• Secure all hose connections with hose clamps that match current standard production.
• When cleaning air filter housing with compressed air, observe the following: To avoid malfunctions, cover critical air carrying components such as Mass Air Flow (MAF) sensor, air duct, etc. with a clean cloth.
• Observe waste disposal regulations!
- Blow out water drain (small hole in lower part of air filter housing - 1 -) with compressed air.
- Clean air filter housing (upper and lower parts) of salt residue, dirt or leaves (clean with vacuum, if necessary).
- Check Mass Air Flow (MAF) sensor and air guide hose (clean air side) for salt residue, dirt and leaves.
- Check air duct from lock carrier to air filter housing for dirt and leaves.
- When installing air filter insert, ensure it is centered in mount on bottom part of of air filter housing.
- Carefully place upper part of air filter housing on lower part without much force (pay attention to sealing lips and air duct - 2 - - "air leaks").
- When positioning upper part of air filter housing on electrical connectors - 1 -, ensure they are not pinched in the housing.
- Make sure the air guide hose is seated securely between Mass Air Flow (MAF) sensor (G70) and Throttle Valve Control Module (J338).
Left air filter insert, removing and installing
Removing
- Remove air guide hose between Mass Air Flow (MAF) sensor 2 (G246) and Mass Air Flow (MAF) sensor 2 (J544) by loosening hose clamps - 1 and 2 -.
- Remove electrical connector from Mass Air Flow (MAF) sensor 2 (G246).
- Remove bolts - arrows -.
- Remove upper part of air filter housing.
- Remove air filter insert.
• Make sure no dirt enters air filter housing or Mass Air Flow (MAF) sensor.
Installing
Installation is done in reverse sequence while observing the following.
For proper mass air flow sensor function, it is important to observe the following notes and perform the procedure exactly.
• If the air filter insert is heavily soiled or soaked, dirt particles or moisture can reach the Mass Air Flow (MAF) sensor and cause an incorrect air flow reading. This causes lack of performance because a lower injection amount is calculated.
• Always use an original air filter insert.
• The air filter housing must be clean.
• Secure all hose connections with hose clamps that match current standard production.
• When cleaning air filter housing with compressed air, observe the following: To avoid malfunctions, cover critical air carrying components such as Mass Air Flow (MAF) sensor, air duct, etc. with a clean cloth.
• Observe waste disposal regulations!
- Blow out water drain (small hole in lower part of air filter housing - 1 -) with compressed air.
• The illustration shows the right lower part of the air filter housing. Left side is same.
- Clean air filter housing (upper and lower parts) of salt residue, dirt or leaves (clean with vacuum, if necessary).
- Check Mass Air Flow (MAF) sensor and air guide hose (clean air side) for salt residue, dirt and leaves.
- Check air duct from lock carrier to air filter housing for dirt and leaves.
- When installing air filter insert, ensure it is centered in mount on bottom part of of air filter housing.
- Carefully place upper part of air filter housing on lower part without much force (pay attention to sealing lips and air duct - "air leaks").
- Make sure the air guide hose is seated securely between Mass Air Flow (MAF) sensor 2 (G246) and Throttle Valve Control Module (J544).
W12 engine
Left engine bank
- Loosen hose clamp - 1 -.
- Remove hose connector - 2 - from intake hose.
- Remove intake hose from intake manifold.
- Loosen 5 bolts on air filter cover.
- Remove air filter cover upward and disconnect Mass Air Flow (MAF) sensor - 1 -.
- Remove old filter insert and clean air filter housing.
- Assembly is reverse of removal.
Right engine bank
- Loosen hose clamp - 1 -.
- Remove intake hose - 2 - from intake manifold and press it to side.
- Release connector consoles - 3 - and - 4 -. Remove upward.
- Loosen 5 bolts on air filter cover.
- Remove air filter cover upward and disconnect Mass Air Flow (MAF) sensor - 1 -.
- Remove old filter insert and clean air filter housing.
- Assembly is reverse of removal.
Follow notes below
*
• If the air filter insert is heavily soiled or soaked, dirt particles or moisture can reach the Mass Air Flow Sensor (G70) and cause an incorrect air flow reading. This causes lack of performance because a lower injection amount is calculated.
• Always use an original air filter insert.
• Use a lubricant (silicone-free) when installing intake hose.
• Secure all hose connections with hose clamps that match current standard production.
• Check drain hose in bottom side of air filter or dirt and adhesion (clean, if necessary).
• Clean air filter housing (upper and lower parts) of salt residue, dirt or leaves (clean with vacuum, if necessary).
• Check mass air flow sensor and intake hose (clean air side) for salt residue, dirt and leaves.
• Check intake canal up to filter insert for soiling.
• When installing air filter insert, ensure it is centered in mount on bottom of air filter.
• Carefully and gently place upper part of air filter on lower part. When doing so, ensure upper part of air filter is not crooked on air filter insert. Pay attention to the seal lip on the air filter insert (air leak).
• Finally, screw upper part of air filter onto lower part.