W109 3.5 engine restless, no stabile..turn off when teperature is normaly

Dear Mr. Volker,

thank you for your opinion. When check all, I will inform you about situation

Nice evening,
Mladen

Dear MB friends, dear Mr. Volker,

after checking all the gasoline-fueled elements (gas change, visual control of the tank cleaner, gasoline filter, petrol pump pressure, gas flow through pipes, pressure in the nozzles, spark plugs ...) we discovered that the gasoline relay wich located below the computer, not working properly. After when engine running approx. 15 min. relay is overheated, close the fuel supply and the engine stops. After a few minutes, when inside relay temp. go litlle down, works again..in cyrcle. Relay is changed, and engine now runs as long as it has gasoline
Thank you very much for support and best regads,
Mladen

Hi Maden,

thanks for the feedback. A rare fault that you discovered.

Hi Mladen,
I had the same problem before - described in this thread, with photos: jetronic.org/de/forum/jetronic/42-proble...-dem-hauptrelais#187
(relais is a slightly different Bosch-type, not a Mercedes-car...)

The problem occured after more than one hour's drive - quite difficult to find.

Congratulations!

Norbert