Q4 Viscomatic pressure akkumulator

Did you find a part on another type or make car that fits the 164? We love to hear about it!
Post Reply
User avatar
alfisty
Posts: 4
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.
Attachments
K640_DSC_1283.JPG
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)
User avatar
Alfan
Q4 owner
Posts: 1377
Joined: Thu Oct 22, 2009 8:20 pm
Location: Denmark
Contact:

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
User avatar
AlfaWhiz
Posts: 453
Joined: Thu Feb 06, 2014 1:15 pm

Re: Q4 Viscomatic pressure akkumulator

Post by AlfaWhiz »

OMG I have the same problem currently in mine, without success for YEARS! I'll order this part ASAP, and confirm if it indeed solves the issue. Amazing tip, can't wait to check it out! :D
User avatar
AlfaWhiz
Posts: 453
Joined: Thu Feb 06, 2014 1:15 pm

Re: Q4 Viscomatic pressure akkumulator

Post by AlfaWhiz »

And it's already ordered, that part is readily available everywhere!
User avatar
Alfan
Q4 owner
Posts: 1377
Joined: Thu Oct 22, 2009 8:20 pm
Location: Denmark
Contact:

Re: Q4 Viscomatic pressure akkumulator

Post by Alfan »

I have also ordered and received new ones, so that it is ready when the car is put back together 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
Post Reply