Hi guys,

I thought, I have done all I could.  But that’s not enough.  

I did change both senders, the 0.3 bar between the tubes, and the 0.8 bar one behind the pulleys.
Checked the continuity of the brown wires that lead to the wire box, and they have continuity.  The wires’ ends are new.  I have renewed most of the two wires.
The 0.8 bar sender’s wire goes to the yellow/black wire.  Both wires have continuity up at the round connector.  

If I accelerate over 2000 the buzzer goes off.  The engine runs fine with the new gasket I just installed.  
It must have been badly overheated before it came to me.  

There must be something else that makes this happen.

Maybe David has an idea.  Because I think, it can happen to anybody.

Zoltan
God bless the List