[V8] ZF transmission hard shifting

[W]

Thanks on the info for the mass air sensor.

 

Also, what could be the issue with the transmission if the symptoms are it
shifts hard from third to fourth gear under hard acceleration or in 'sport'
mode? The fluid (*Mobil 1 synthetic*) and filter were just changed less than
300 miles ago. The trans shifted fine after the change, but in the last
hundred miles this issue started. Car has 175,000 miles, but has been
pampered all its 18 years and never exhibited these symptoms before.

 

Allan