coolant temperature AUDI A4 1997 B5 / 1.G AWM Engine Cooling System Components Workshop Manual
Page 37 of 38
19-33
Test requirements:
Engine at operating temperature.
WARNING!
Hot steam can escape when opening the cap
on the expansion tank: Cover cap with a cloth
and open carefully.
- Open cover of coolant expansion tank
Testing pressure relief valve in filler cap - Install tester VAG 1274 with adapter VAG 1274/8 onto expansion tank.
- Using hand pump on tester, build up a pressure of approx. 1.0 bar.
- If this pressure is not maintained, locate and repair leaks.
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