Hi jarmo,
first we have to check, if Your car is from early 1989 or later. The reason is, the first 730i only had a mechanical transmission, without EH-switch.
This is the switch in the console left of the gear lever with the position points S-E-M. Both transmission versions are 4HP22 but the electronic one has additionally "EH".
I know that problem from my 1987 730i, which does that from 2nd to 4th gear - sometimes seems as if there is no 3rd between - but only if car is warm.
If You have the EH-Switch, just try to switch gears manually ("M"), if not - hmmm...then try oil change with filter first.
Greets Norbert
|