veloz_A4

I been having problems with my fuel gauge for the last year. It bounces around between 1/4 and 3/4. For example if the fuel gauge starts of at 1/2 of tank it eventually rises to 3/4 of a tank while driving. My dealership has changed several parts: the fuel tank, the instrument cluster,and two sending units without any result.
Just two nights ago I noticed the temp gauge was also acting up...it normally reads 90 c while driving but it now bounces around and it ends up at 60 c while driving.
Just like the fuel gauge the temp gauge resets and works properly after the car has been parked for a while but after driving it the above mentioned symptoms are repeated.
To top it all of my warranty expired on Monday of this week.
Any suggestions would be greatly appreciated.

thank you.

Žob

Fuel gauge sending unit (see my web page) and temp sending unit, both cheap and easy