check engine AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components

19-10

WARNING!

The cooling system is pressurized when the
engine is warm. Wear gloves and other
appropriate protection, and slowly and
carefully release system pressure, if
necessary, before performing repairs.

- Check coolant level in expansion tank and top
up if necessary.

- Stop engine (switch ignition off).
Pa
ge 10 of 12 Coolin
g system, com
ponents
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE01.19.2

19-11

Cooling system leaks, checking


WARNING!

The cooling system is pressurized when the
engine is warm. Wear gloves and other
appropriate protection, and slowly and
carefully release system pressure, if
necessary, before performing repairs.

Engine must be at operating temperature

If the pressure drops: - Connect cooling system tester VW 1274 to expansion tank using
adapter VW 1274/1.
- Operate hand pump on tester to create a pressure of approx. 1 bar (15
psi).
- Locate and repair leak in the cooling system.
Pa
ge 11 of 12 Coolin
g system, com
ponents
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE01.19.2