Q4 Viscomatic pressure akkumulator

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Joined: Thu Oct 13, 2011 5:03 pm

Q4 Viscomatic pressure akkumulator

Post by alfisty »

Hello everyone
My Q4 had the problem that the four-wheel drive light came on after about an hour of driving.
Error "Hydraulic pressure, fluctuation too large"
This error then appeared more and more frequently. First I changed the oil and also cleaned the rear filter element. Finally, I replaced the accumulator.
I took the FEBI BILSTEIN 01817 pressure accumulator. This is used in brake systems from e.g. BMW with hydraulic brake boosters. The part fits 1:1.
Now the problem is fixed.
Alfa 33 1,4 Imola (´94)
Alfa 33 1,7 16V Q4 SW (´93)
Alfa Sport Sedan Alfetta 2,0 Li America(´79)
Alfa 164 Q4 (´94)
Alfa 159 2,0 16V JTDM SW (2011)
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Location: Denmark

Re: Q4 Viscomatic pressure akkumulator

Post by Alfan »

That is great parts info, thanks for posting this 👍

And also great that you solved the problem 8)
1994 Alfa Romeo 164 Q4 Proteo Rosso
1989 Lancia Thema 8.32 Verde Reflex
2001 AR Spider 3.0 24V Blue Lightning
2015 AR 4C Rosso Competizione
2021 AR Giulia Sprint Anodized Blu
1980 AR Alfetta Blindata Bianco
2003 AR 166 3.2 Grigio
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