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1999 Audi A4 Quattro 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
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 1999 Audi A4 Quattro AUTOMOBILES
Audi -> Component Replacement & Adjustment -> Timing Belt, Replace -> 2.8L Engine
Vehicle: 1999 Audi A4 Quattro 2.8 V6 GAS
2.8L Engine
Mark direction of travel on serpentine drive belt and timing belt for installation reference.
- Remove serpentine drive belt.
- Unclip timing belt upper covers on both sides, Fig. .
- Position crankshaft at TDC compression stroke. Align notch on crankshaft pulley with notch on front case, Fig. .
- Ensure large holes of locating plates on camshaft sprockets face each other. If not, rotate crankshaft one turn and reinspect position of camshaft sprocket plate large holes.
- Remove crankshaft position sensor. Crankshaft positi...
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BRAKE SERVICE PROCEDURES FOR 1999 Audi A4 Quattro AUTOMOBILES
Anti-lock Brakes -> Diagnosis & Testing -> A4, A6, A8, S4 & S6 -> ABS Return Pump Does Not Run, Relay Good, Tester In Position 3 -> ABS Return Pump Does Not Run, Tester In Position 3 -> Accessing Diagnostic Trouble Codes (DTC) -> Clearing Diagnostic Trouble Codes -> Diagnostic Tests -> Diagnostic Trouble Code Interpretation -> Electrical Testing -> Hydraulic Modulator High & Low Pressure Testing -> LED 1 & 3 Do Not Light, Tester In Position 1 -> LED 18 Does Not Light -> LED 19 Does Not Light -> LED 35 Does Not Light -> LED 4 Does Not Light, Tester In Position 1 -> LED 4, 2, 35, 18 & 19 Do Not Light, Tester In Position 1 -> LED For Alternator Does Not Go Out When Engine Starts -> LED For Alternator Does Not Light, Tester In Position 2 -> LED For Brakes Does Not Go Out When Brake Pedal Is Depressed -> LED For Brakes Does Not Light -> No Response From Selected Sensor, Tester In Position 6 -> Read Measuring Value Block -> S6 -> Sensor Signal On Meter Below Minimum Value -> TT -> With LED Type Tester -> With Scan Tool -> Wrong Solenoid Valve Operates, Tester In Position 5
Vehicle: 1999 Audi A4 Quattro 2.8 V6 GAS
With LED Type Tester
LED 1 & 3 Do Not Light, Tester In Position 1
Refer to Fig. ,for LED identification numbers. Weaker illumination of an LED indicates a contact resistance in respective circuit.
- Inspect for continuity between ABS control unit connector terminal 34 and ground at battery ground cable (LED 1), Fig. .
- Inspect for continuity between ABS control unit connector terminal 10 and ground at battery ground cable (LED 3).
- If continuity does not exist, repair shorted or open circuit.
LED 4 Does Not Light, Tester In Position 1
Refer to Fig. ,for LED identification. Weaker illum...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1999 Audi A4 Quattro AUTOMOBILES
Audi -> Fuel Filter Replacement -> Gasoline Engines -> Removal & Installation
Vehicle: 1999 Audi A4 Quattro 1.8 L4 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 Quattro AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1999 Audi A4 Quattro Avant 1.8 L4 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 Quattro AUTOMOBILES
Alternator, Replace
Vehicle: 1999 Audi A4 Quattro 1.8 L4 GAS
- Obtain radio anti-theft protection code.
- Loosen ribbed belt and remove from alternator.
- Remove air guide at throttle body.
- Remove upper and lower attaching nut and bolt.
- Move alternator slightly, th...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1999 Audi A4 Quattro AUTOMOBILES
Audi -> Check Engine Lamp -> With OBD II
Vehicle: 1999 Audi A4 Quattro Avant 1.8 L4 GAS
The Check Engine lamp should illuminate when the ignition switch is placed in the On position to indicate the lamp is operational. After the engine has been started, the warning lamp should go off. If warning lamp com...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1999 Audi A4 Quattro AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1999 Audi A4 Quattro Avant 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 Quattro AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1999 Audi A4 Quattro 2.8 V6 GAS
Risk of destroying due to reversed running direction on a used drive belt. Before removing drive belt, marking running direction with chalk or felt-tip pen for reinstallation later.
- Remove sound insulation panel.
- Loosen bolts for drive belt tensioner for A/C compressor.
- Move drive belt tensioner in a ...
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COMPONENT LOCATION DIAGRAMS FOR 1999 Audi A4 Quattro AUTOMOBILES
Component location diagrams for most 1999 Audi A4 Quattro cars and light trucks sold in the U.S. from 1990+.
Electronic Control Module Locations Diagram for 1999 Audi A4 Quattro 2.8 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1999 Audi A4 Quattro AUTOMOBILES
OEM drawn wiring diagrams for most 1999 Audi A4 Quattro cars and light trucks sold in the U.S.
1999 Audi A4 Quattro Avant 2.8 V6 GAS Wiring Diagram Components on diagram: |
1999 Audi A4 Quattro 1.8 L4 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1999 Audi A4 Quattro AUTOMOBILES
OEM TSB listings for most 1999 Audi A4 Quattro cars and light trucks sold in the U.S. from 1985+.
Document: AIRBAG, REPLACEMENT INTERVAL CHANGE - REVISED Vehicle: 1999 Audi A4 Quattro 1.8 L4 GAS Auto Systems: |
Document: AIRBAG / PYROTECHNIC SAFETY BELT DEPLOYMENT INQUIRIES - REVISED Vehicle: 1999 Audi A4 Quattro 1.8 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1999 Audi A4 Quattro AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1999 Audi A4 Quattro 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 Quattro 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 Quattro 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 Quattro 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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