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 MANUALSAUDI1998A8 SEDAN (4D2) V8-3.7L (AEW)REPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTCOOLING SYSTEMSERVICE AND REPAIRCOOLING SYSTEM COMPONENTS, REMOVING AND INSTALLING
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
Cooling System Components, Removing and Installing
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION Cooling System Components, Removing and Installing
Cooling System Components, Removing and Installing
Notes:
^ Always replace seals and gaskets.
^ Testing coolant fan, Refer to On Board Diagnostic (OBD), Electrical Equipment m. y. 1997-1999.
1. Coolant line, rear
2. From heater core
^ With vent valve
3. To heater core
^ With vent valve
4. Return hose
5. Cap for expansion tank
^ Checking, Refer to Cooling System, Testing and Inspection.
6. Expansion tank
7. Filler hose
8. Coolant thermostat
^ Replacing, Refer to Thermostat, Engine Cooling, Service and Repair.
9. Radiator
10. Coolant hose bracket
11. Coolant line
^ Connection between oil cooler and engine block
12. Oil cooler
13. Coolant line
14. Coolant line to oil cooler
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.