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1999 Audi A4 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Audi REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Imported Vehicles
Vehicle: 1999 Audi A4 2.8 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
Hydraulic Brake Systems -> Diagnosis & Testing -> A4, S4 & TT -> A6 & S6 -> Brake Pressure Regulator -> Cabriolet
Vehicle: 1999 Audi A4 2.8 V6 GAS
Brake Pressure Regulator
A4, S4 & TT
On these models there is no mechanical brake pressure regulator. Specially matched control module software controls brake pressure regulation.
A6 & S6
Brake pressure regulator is mounted on body (lefthand rear), and operated by a spring attached to the rear axle. Prior to inspection, ensure system is properly bled and filled.
- Firmly depress brake pedal once, with vehicle on ground.
- Release pedal suddenly and ensure lever on pressure regulator moves.
Cabriolet
Brake pressure regulator is mounted on righthand rear of body and operated by spring att...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
Audi -> Fuel Filter Replacement -> Gasoline Engines -> Removal & Installation
Vehicle: 1999 Audi A4 2.8 V6 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Obtain the vehicle owner's radio theft protection code, then disconnect the battery ground cable. Briefly open fuel filler cap to relieve system pressure, then close it again.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while it relearns its adaptive strategy.
Removal & Installation
On A4 and S4 mod...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1999 Audi A4 2.8 V6 GAS
- Remove cap from wheel using a suitable removal tool then loosen lug nuts.
- Remove axle bolt and washer Fig. . Remove and install axle bolt only with tires on ground. Do not move vehicle without driveshaft or outer constant velocity joint installed.
- Raise and support vehicle, then remove wheel.
- Pull speed sensor out of axle housing slightly.
- Loosen but do not remove lower control arm bolts at subframe.
- Remove lower strut bolt from lower control arm.
- Remove bolts from driveshaft flange at transaxle.
- Remove lower mounting bolt for strut.
- Remove bolts retaining knuckle to upper control a...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
Alternator, Replace
Vehicle: 1999 Audi A4 2.8 V6 GAS
- Obtain radio anti-theft protection code.
- Remove serpentine drive belt, Fig. , then disconnect electrical connections from alternator.
- Remove alternator mounting bolts an...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
Cabin Air Filter Service -> Audi -> 1996-2008 A4, 1998 Cabriolet, 2002-08 S4 & 2007-09 RS4
Vehicle: 1999 Audi A4 2.8 V6 GAS
On 1996-2003 models, the cabin air filter should be replaced every 20,000 miles.
On 2004-09 models, the cabin air filter should be replaced at 15,000 miles, then every 20,000 miles.
- Open the hood.
- Remove the righthand side air intake pl...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
Audi -> Brake Pad Wear Indicator Lamp ->
Vehicle: 1999 Audi A4 1.8 L4 GAS
The brake pad wear warning lamp will be illuminated when disc brake pads wear d...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1999 Audi A4 2.8 V6 GAS
Lower
- Drain coolant into a suitable container.
- Reposition hose clamp at radiator and remove hose.
- Reposition hose clamp at thermostat housing and remove hose.
- Remove hose from vehicle.
- Reverse procedure...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1999 Audi A4 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1999 Audi A4 1.8 L4 GAS
- Put lock carrier into service position.
- Mark direction of engine rotation on belt.
- Slacken belt by turning tensioner in directi...
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COMPONENT LOCATION DIAGRAMS FOR 1999 Audi A4 AUTOMOBILES
Component location diagrams for most 1999 Audi A4 cars and light trucks sold in the U.S. from 1990+.
I/P & Console Component Locations Diagram for 1999 Audi A4 1.8 L4 GAS Components on diagram: |
Audio System Components Locations Diagram for 1999 Audi A4 2.8 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1999 Audi A4 AUTOMOBILES
OEM drawn wiring diagrams for most 1999 Audi A4 cars and light trucks sold in the U.S.
1999 Audi A4 1.8 L4 GAS Wiring Diagram Components on diagram: |
1999 Audi A4 2.8 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1999 Audi A4 AUTOMOBILES
OEM TSB listings for most 1999 Audi A4 cars and light trucks sold in the U.S. from 1985+.
Document: AIRBAG, REPLACEMENT INTERVAL CHANGE - REVISED Vehicle: 1999 Audi A4 1.8 L4 GAS Auto Systems: |
Document: AIRBAG / PYROTECHNIC SAFETY BELT DEPLOYMENT INQUIRIES - REVISED Vehicle: 1999 Audi A4 1.8 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1999 Audi A4 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1999 Audi A4 cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1999 Audi A4 cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1999 Audi A4 cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1999 Audi A4 cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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