740 brake servo function delay at low temps

  • Thread starter Thread starter viktor weisshaeupl
  • Start date Start date
V

viktor weisshaeupl

When temperature is below freezing point, the servo power of
the brakes won´t be active before driving a few minutes.
Volvo 740 Turbodiesel 1989. Happens never during summer.
Haven´t searched yet for a hose containing condensed water.

Thank You for any input.
 
This can be caused by the one-way valves in the vacuum pump or iced condensation
inside the pump and also check the lines from pump to brake servo.

Cheers, Peter.

: When temperature is below freezing point, the servo power of
: the brakes won´t be active before driving a few minutes.
: Volvo 740 Turbodiesel 1989. Happens never during summer.
: Haven´t searched yet for a hose containing condensed water.
:
: Thank You for any input.
:
: --
: Viktor Weisshäupl
: personal e-mail to: weisshaeupl at utanet dot at
: The e-mail adress in the newsreader exists, but is never
: read and only meant to hold the flood of spam
:
 
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