Audi A4

since 1994 release

Manual of the car

Audi A4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ System of an exhaust
- Cooling system
   So there is a cooling
   Check of level of cooling liquid
   Antifreeze check
   Check of the cooling system on tightness
   Locking cover of the cooling system
   The help at malfunctions
   Water pump
   Maple belt of the water pump
   Various models of fans
   Viscous fan
   The radiator fan with the electric drive
   Violations in operation of the fan of a radiator
   The help at malfunctions
+ Fuel tank and fuel pump
+ Air filter and channels of absorption
+ System of injection
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ System of ignition
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics


The help at malfunctions

Cooling system

Its reasons
Your help
A. The arrow of the indicator of temperature is rejected to a limit to the right, the red alarm bulb blinks

1. Only with the four-cylinder engine: maple the belt is stretched or tore
2. In the cooling system of insufficiently cooling liquid
3. The wire of the indicator of temperature is closed on "weight"
4. The thermostat does not open inflow of cold liquid from a radiator (a radiator cold)
5. The fan of a radiator do not join
6. The safety valve of elevated pressure in a locking cover is faulty
7. The indicator voltage stabilizer is faulty
8. Radiator plates are corked

Replace maple a belt
Disconnect a wire of the sensor of temperature, the arrow has to return to a starting position and the red bulb to go out, otherwise – short circuit on "weight"; check a wire on all length
Dismantle the thermostat and continue a trip without it or tow off the car
Check a cover if it is necessary, replace
Clean radiator plates

B. The slowed-down reaction of the indicator of temperature, weak power of heating The thermostat is closed not completely, heated cooling liquid too early proceeds through a radiator Clean the thermostat if it is necessary, replace