1993 Audi 100 S - Mechanical Issues

[lylefc]

I just bought a used 1993 Audi 100 S and it has some mechanical issues.

1) The radio is getting power to it, but not working.
2) There is a constant interval warning chime everytime the car is turned on and when the lights are on it goes from interval to a constant chime.
3) It is affecting the driver side door lock and the automatic door lock on the driver door.

Does anyone know what could be causing this problem?

Please help if possibe. Thanks!

[gkampo]

Ijust baught an Audi 100 2.3E. The fuel pump was noizi and I changed it with a new Boss electric fuel pump. The problem arrised was that engine is doing like crazy the revolutions per minute are going up and down with no reason, & when A/C is on the rpm going down and finally swich off. Yes we have clean the tang and removed any air in the pipes.
Has enybody idea how to solve this?