BMW 528 Engine Revs Up

I Just Bought This Car And The Transmission Randomly Shifts From D To S1 To S2. It Will Shift Back Into D And Seems To Run Fine In Each...

When I Start My Car It Revs Over 2000 Rpm Or More,i Hit The Gas Padle And It Drops Low Then Gose Hi Again , What Can I Do To Fix This...

Hi I Have A 1987 528e Bmw Auto It Has No Get Up And Go No Low End My Kids Kia Would Kick Its But. I No Its The Ecno, Model Is There A Diff...

My Speed Sign Works But My Rpm Doesnt Work What Sould I Do