Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSAUDI1999A4 BASE, 2.8 D, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 116 (MULTIPORT FUEL INJECTION (MFI) - 2.8L V6 ATQ)
1999 Audi A4 Base, 2.8 D, Automatic
Section 116 (MULTIPORT Fuel Injection (MFI) - 2.8L V6 ATQ)
1999 Audi A4 Base, 2.8 D, AutomaticSECTION Section 116 (MULTIPORT Fuel Injection (MFI) - 2.8L V6 ATQ)
WARNING: This page is about a different car, the 2001 Audi A6, 2000 Audi A6, and 1999 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
- Multiport Fuel Injection (MFI)
- Motronic injection system, servicing
- Safety precautions
- Rules of cleanliness
- Technical data
- Component locations, overview
- Notes
- Component location, Electronic Power Control (EPC) warning lamp -K132-
- Installation position, Throttle Position (TP) sensor -G79- and Sender 2 for accelerator pedal position -G185-
- Component location Brake Light Switch -F-, Brake Vacuum Vent Valve Switch for Cruise Control/Diesel Fuel Injection -F47- and Clutch Vacuum Vent Valve Switch -F36-
- Component location for Secondary Air Injection (AIR) Pump Relay -J299-
- Component locations Fuel Pump (FP) Relay -J17-
- Component location of Data Link Connector (DLC)
- Air filter, disassembling and assembling
- Intake manifold change-over components, removing and installing
- Wire and component test using VAG1598/31 test box
- Engine Control Module (ECM) (without metal anti-theft housing), replacing
- Engine Control Module (ECM) (with metal anti-theft housing), replacing
- Idle speed (RPM), checking
- Fuel pressure regulator and residual pressure, checking
- Fuel injectors, checking
- Fuel rail with fuel injectors, disassembling and assembling
- Fuel injectors, removing and installing
- Injection quantity, proper seal and spray pattern of fuel injectors, checking
- Fuel Pump (FP) relay -J17- and activation, checking
- Mass Air Flow (MAF) sensor -G70-, checking
- Voltage supply for Mass Air Flow (MAF) sensor, checking
- Intake air system, checking for leaks (unmetered air)
- Intake manifold change-over
- Oxygen sensor control, checking
- Oxygen sensor control, function
- Oxygen sensors and oxygen sensor control before catalytic converter, checking
- Oxygen sensor aging (oxygen sensor before catalytic converter), checking
- Oxygen sensor and oxygen sensor control behind catalytic converter, checking
- Oxygen sensor heating for oxygen sensors before and behind catalytic converter, checking
- Oxygen sensor, removing and installing
- Tank ventilation, checking
- Electronic Engine Power Control (EPC), checking
- EPC system, function
- Electronic Power Control (EPC) warning lamp -K132- in instrument cluster, significance
- Electronic Power Control (EPC) warning lamp -K132-, checking
- Throttle valve control module -J338 -, checking
- Throttle valve control module, adapting
- Angle sensor -1- for throttle drive, checking
- Throttle Position (TP) sensor, checking
- Kick down function, adapting
- Additional signals, testing
- Special tools and equipment
- Engine speed signal, checking
- Consumption signal for on board computer, checking
- Vehicle speed signal, checking
- Wire for fuel level signal, checking
- A/C compressor shut -off, checking
- A/C system signal, checking
- Brake light switch and brake pedal switch, checking
- Clutch vacuum vent valve switch -F36-, checking
- Wire for crash signal, checking
- Rough terrain signal from ABS/EDL control module, checking
- Data transfer between Engine Control Module (ECM) and CAN capable control modules, checking
- Motronic injection system, servicing
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.