AudiWorld Tech Articles – Engine

AudiWorld Tech articles are arranged by model with the newest articles appearing at the top of each section. Click any model below to jump to its section (if applicable). Note that an article may apply to more than one model.

(A4) = Audi A4 (A8) = Audi A8 (80/90) = Audi 80 and 90
(S4) = Audi S4 (TT) = Audi TT (GA) = General Article
(A6) = Audi A6 (AR) = Audi allroad (OA) = Other Audi
Model(s) Description
A4 LP Fuel Pump DIY Replacement – Audi A4 B7 Quattro
Article By: betyouaint– 2015
A4 Heater Core Flush
Article By: TristanP- 2008
A4 Testpipe on 1.8t ATW
Article By: BSK – 2008
A4 DIY Oil Change 2.0l
Article By: adminisTerTurbo – 2008
A4 1.8T Quattro and FWD Clutch Replacement (B5)
Article By: AaronBryan – 2008
A4,A6 2.8 Serpentine Belt Tensioner Replacement
Article By: Kris Hansen – 2007
A4,A6 3.0 V6 Timing Belt Service
Article By: a_CQ – 2007
A4,A6 Cleaning The Throttle Valve (2.8)
Article By: Kris Hansen – 2007
A4,A6 Coolant Temperature Sensor Replacement (2.8)
Article By: Kris Hansen – 2007
A4 Thermostat Replacement (B6)
Article By: Matt Devo- 2007
A4 Tiptronic MultiFunction Switch Replacement (B5)
Article By: Nate – 2007
A4 Understanding Oxygen Sensors (B5)
Article By: Shard7 – 2007
A4 1.8t Water Pump/Timing Belt (B6)
Article By: 1/4 scale – 2007
S4 S4 Engine Pull (B5)
Article By: Mike2kS4::ASP- 2007
A4 Filling Transmission mount with Urethane
Article By: Monkeyboy- 2007
A4 Replacing Fuel Injector Gaskets
Article By: Monkeyboy – 2006
A4 Replacing 1.8t Valve Cover Gasket
Article By: Kenny Garreau – 2006
A4 Shift Lever U Joint Fix
Article By: HJB – 2006
A4 Seafoam Treatment
Article By: BSK – 2006
A4,A6,90 Removing and Cleaning ICV (12v V6)
Article By:Kris Hansen – 2006
A4,S4 S4/RS4 SAC pressure plates:How to check/set the SAC mechanism
Article By: [email protected] – 2006
A4 Power Steering Cooler Install
Article By: bitjockey – 2006
A4,S4 Fuel Pump Seal (B5)
Article By: S4wanabe – 2006
A4 External Oil Cooler Install (B5 1.8t)
Article By: Point By – 2006
A4 Coolant Flange Replacement (1.8t)
Article By: BSK – 2006
A4 1.8t DV Install
Article By: BSK – 2005 
A4 Supersprint Exhaust Install (B5 1.8t)
Article By: BSK – 2005
A4 N75 Valve Replacement (B5 1.8t)
Article By: BSK – 2005
A4 Labree Downpipe Installation (B5 1.8t FWD)
Article By: shep 1.8t – 2005
A4, A6 Suction Pump Replacement (2.8)
Article By: audiSean – 2005
A4 Coolant Sensor Replacement (B6 1.8t)
Article By: fourwheelslide – 2004
A4, S4 Low temp Thermo-Switch for S4 (B5) After-Run System
Article By: Andrew Lundy – 2004
A4 B5 A4 Engine Mount Replacement
Article By: HurricaneSteve / Will Mahoney – 2004
A4 Neuspeed Short Shifter Install (A4 6-speed)
Article By: Alex Demsky – 2004
S4 Stratmosphere Short Shifter Install (B6 S4)
Article By: M�chtigAvant – 2004
A4 Replacing the Engine Coolant Sensor
Article By: Victor Silva – 2004
A4, S4 Replacing the Rear Differential Mount
Article By: Nick Gustas – 2004
A4 Replacing the Clutch Master/Slave Cylinders
Article By: Paul Zak – 2004
A4 Fuel Filter Replacement
Article By: Mike Staley – 2004
A4 A4 1.8Tq Clutch Replacement
Article By: xr4tic – 2004
A4 Replacing the Coolant Temperature Sensor
Article By: Eric Seto – 2003
A4 Replacing Clutch Master/Slave Cylinders
Article By: Paul Zak – 2003
A4 Air Filter Upgrade
Article By: Phil Becker – 2003
A4 Installing a K&N Filter
Article By: jcraley – 2003
A4 Spark Plug Installation(2.8 Engine)
Article By: Jim Baulsir – 2002
A4 Installing an Electric Fan Kit
Article By: got_root? – joe/zyxt and A4Anth – 2001
A4 Replacing the Timing Belt (A4 1.8t)
Article By: Ben Hardt – 2001
A4 Replacing the Timing Belt (A4 1.8t)
Article By: Andy TN – 2001
A4 1.8T Chip Upgrade & HKS Turbo Timer
Article By: Anthony Hladun – 2001
A4 K04 Turbo Upgrade
Article By: Don Pavlik – 2000
A4 Turbo Timer Installation (Greddy Turbo Timer III)
Article By: James Reedy – 2000
A4 K&N Air Filter Fitment
Article By: Mark Jacobson – 2000
A4 Air Filter Upgrade Options
Article By: Steve Sherwood (AudiWorld) – 1998
A4 Removing the ECU
Article By: Greg Heidt – 1998
A4 What is the Moan/Groan from the 1.8T Engine?
Article By: Tom Fric – 1998
A4 Malfunction Indicator Light – Common Problems
Article By: Mike S. – 1998
A4 Oil Filter Change (A Potential Problem to Avoid)
Article By: Philip – 1998
A4 How to Change Your Oil
Article By: Ross Manges – 1997
A4, A6 Throttle Body Modification for 12v Engine
Article By: Dan Masi – 1997
Model(s) Description
S4 Fuel Gauge Sending Unit Replacement (B6)
Article By: Hindsight – 2007
S4 Installing an Oil Catch Can (B5)
Article By:BLK01S4 – 2006
S4 Re-greasing Hyperboost Diverter Valves (B5)
Article By: BLK01S4 – 2006
S4 Turning Water into Horsepower (Water Injection) (B5)
Article By: Jeff Jones – 2006
S4 RS4 Intercooler Installation On S4 (B5)
Article By: [email protected] – 2006
S4 DIY Downpipes (Off Road Use Only) (B5)
Article By: OC Avant – 2006
S4, A6, AR EGT Sensor Swap
Article By: Steve Trac- 2005
S4, A6, AR 2.7T Timing Belt Replacement
Article By: RMcQ
S4 RS4 Oil Cooler Installation
Article By: Vr life – 2004
S4, A6, AR Replacing S4 Valve Cover Gasket
Article By: Andrew (Qcrazy) – 2004
S4 S4 Downpipe Installation
Article By: Adam Garcia – 2002
S4 S4 Turbo Matrix
Article By: s4what – 2002
S4, A6, AR S4 Turbo Timer Afterrun Coolant Pump Integration
Article By: Eric “Keman” Uratchko – 2002
S4, A6, AR APR 2.7t BiPipe (Cure for the Troublesome TBB)
Article By: Don Pavlik – 2001
S4 Improved Driveline Control
Article By: Don Pavlik – 2001
S4 Forge-Milltek Cat-Back Exhaust
Article By: Don Pavlik – 2001
S4, A6, AR, TT Intake Air Charge Temperature
Article By: Don Pavlik – 2001
S4 Torn Bypass Valves
Article By: Don Pavlik – 2001
S4 Bypass Valve Testing
Article By: Don Pavlik – 2001
S4 Installing an Intercooler Mister
Article By: Don Pavlik – 2000
S4 Throttle Body Hose Replacement
Article By: Don Pavlik – 2000
S4 Installing an Air Filter
Article By: Don Pavlik – 2000
S4 K&N Air Filter Testing
Article By: Don Pavlik – 2000
S4 S4 Performance Testing
Article By: Don Pavlik – 2000
Model(s) Description
A6, Q5 Audi 3.2 FSI Upper Timing Chain Tensioner Replacement
Article By: mkongsiri– 2014
A6 DIY 55k Service 2005 C6
Article By: r1racer– 2014
A6,S6 Coolant Temperature Sensor replacement ’02 S6 (C5)
Article By: Just Me – 2011
A6,A4 Audi A6 Crank Vent System Explained (C5)
Article By: David Hoerl – 2009
A6 2.7t Valve Cover/Cam Chain Seals
Article By: absolutcq20v- 2007
A6 Replacing Fuel Pump (C5)
Article By: Robert Gedeon – 2006
A6 Walbro – V8/A100 fuel pump in C5
Article By: Robert Gedeon – 2006
A6 DIY N75 Replacement (2.7t)
Article By: Robert Gedeon – 2006
A6,allroad Spark Plug Swap (C5, 2.7t)
Article By: Robert Gedeon – 2006 
A6 Breather Hose Repair (C5, 2.8)
Article By: Kris Hansen – 2006
A6 Auxiliary coolant pump replacement(2.7t)
Article By: Truewit – 2005
A6 A6 2.8 Timing Belt and Water Pump
Article By: Dan Larson – 2002
A6 Insulating the Air Mass Sensor
Article By: Choy Ngee Hoe – 2000
Model(s) Description
A8 A8 Valve Cover Gasket Replacement
Article By: PaulW – 2002
Model(s) Description
80/90 12v V6 Timing Belt/pump/seals/etc (B4)
Article By: Catamount90 – 2007
80/90 10V 5 Cylinder Timing Belt/Water Pump Service (B3)
Article By: S4gasm ~ (aka LoTR) – 2007
80/90 Polishing 12v Intake Manifold
Article By: Greg Kiernan – 2005
Model(s) Description
AR Fan Control Module Replacement
Article By: RMcQ
AR Allroad Oil Change
Article By: RMcQ
Model(s) Description
TT Master Cylinder Replacement (TT)
Article By: Melvin Gale – 2007
TT Alternator Replacement (TT)
Article By: SparTTan – 2006
Model(s) Description
GA Motor Oil, Life Blood For Your Audi
Article By: Audi Junkie- 2006
GA Troubleshooting Oxygen Sensor Trouble Codes 2331 and 2341
Article By: Sandor Foldesi – 2004
GA Tiptronic Recode for FWD and Non-US Vehicles
Article By: Alex Smith – 2004
GA Physical Differences Between K03 and K04
Article By: driveslikegranny – 2004
GA Oxygen Sensor Modification
Article By: Keman – 2004
GA VW/Audi 2.8 V6 Timing Belt/Water Pump
Article By: ARK – 2002
GA Tip ECU Removal Instructions
Article By: Silvertip – 2002
GA Exhaust Systems 101
Article By: Unknown – 2001
GA Timing Belt Replacement II
Article By: Ricardo David – 2001
GA Timing Belt Replacement
Article By: Don Pavlik – 2000
GA Making Sense of Synthetic Lubricants
Article By: Don Stevens – 2000
GA More than you want to know about MOTOR OIL
Article By: Jim TT – 2000
GA Engine Oil Viscosity Discussion
Article By: John Wilkinson – 1999
GA An Introduction to Chip Tuning
Article By: Rodney Spear – 1999
GA An Overview of 5v Engine Technology
Article By: Audi Magazine – 1997