Please help. My engine cuts when driving

[pinapplex]

From out of the blue, my engine cut out 4 times today when coming into a roundabout or stoplight. Canīt really say when, but Iīd guess it dies right before it is supposed to gear down. A common factor would be that I am breaking, but not hard. The tranny is set to "S" if that should make a difference. This is a 300te from 1990. This also happened to my wife like 3 times in the late past.

Any ideas of where to start searching???

Thanks! jm